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HIFIMAN SUNDARA Over-ear Full-size Planar Magnetic Headphones with High Fidelity Design Easy to Drive by iPhone /Android Comfortable Headband Open-Back Design Easy Cable Swapping Black
HIFIMAN SUNDARA Over-ear Full-size Planar Magnetic Headphones with High Fidelity Design Easy to Drive by iPhone /Android Comfortable Headband Open-Back Design Easy Cable Swapping Black
HIFIMAN SUNDARA Over-ear Full-size Planar Magnetic Headphones with High Fidelity Design Easy to Drive by iPhone /Android Comfortable Headband Open-Back Design Easy Cable Swapping Black
HIFIMAN SUNDARA Over-ear Full-size Planar Magnetic Headphones with High Fidelity Design Easy to Drive by iPhone /Android Comfortable Headband Open-Back Design Easy Cable Swapping Black
HIFIMAN SUNDARA Over-ear Full-size Planar Magnetic Headphones with High Fidelity Design Easy to Drive by iPhone /Android Comfortable Headband Open-Back Design Easy Cable Swapping Black
HIFIMAN SUNDARA Over-ear Full-size Planar Magnetic Headphones with High Fidelity Design Easy to Drive by iPhone /Android Comfortable Headband Open-Back Design Easy Cable Swapping Black
HIFIMAN SUNDARA Over-ear Full-size Planar Magnetic Headphones with High Fidelity Design Easy to Drive by iPhone /Android Comfortable Headband Open-Back Design Easy Cable Swapping Black

HIFIMAN SUNDARA Over-ear Full-size Planar Magnetic Headphones with High Fidelity Design Easy to Drive by iPhone /Android Comfortable Headband Open-Back Design Easy Cable Swapping Black

HIFIMAN SUNDARA Over-ear Full-size Planar Magnetic Headphones with High Fidelity Design Easy to Drive by iPhone /Android Comfortable Headband Open-Back Design Easy Cable Swapping Black
HIFIMAN SUNDARA Over-ear Full-size Planar Magnetic Headphones with High Fidelity Design Easy to Drive by iPhone /Android Comfortable Headband Open-Back Design Easy Cable Swapping Black
HIFIMAN SUNDARA Over-ear Full-size Planar Magnetic Headphones with High Fidelity Design Easy to Drive by iPhone /Android Comfortable Headband Open-Back Design Easy Cable Swapping Black
HIFIMAN SUNDARA Over-ear Full-size Planar Magnetic Headphones with High Fidelity Design Easy to Drive by iPhone /Android Comfortable Headband Open-Back Design Easy Cable Swapping Black
HIFIMAN SUNDARA Over-ear Full-size Planar Magnetic Headphones with High Fidelity Design Easy to Drive by iPhone /Android Comfortable Headband Open-Back Design Easy Cable Swapping Black
HIFIMAN SUNDARA Over-ear Full-size Planar Magnetic Headphones with High Fidelity Design Easy to Drive by iPhone /Android Comfortable Headband Open-Back Design Easy Cable Swapping Black
HIFIMAN SUNDARA Over-ear Full-size Planar Magnetic Headphones with High Fidelity Design Easy to Drive by iPhone /Android Comfortable Headband Open-Back Design Easy Cable Swapping Black
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Features

  • Featuring Newly Developed Diaphragm that is 80% Thinner than the HE400 Series Resulting in a Wider Frequency Response, Faster and More Detailed
  • With the weight spreading strap for outstanding comfort but with a more fashion conscious look with its sleek and sumptuous matte black finish.
  • With its all metal headband the SUNDARA is built to take the rigours of urban street life. The SUNDARA is as tough as it is beautiful.
  • New 3.5mm Headphone connector for enhanced durability
  • The slimline SuperMini is the perfect on the partner for the SUNDARA. The SuperMini with its abundance of audio power output and the SUNDARA’s grace and poise makes them the velvet glove over a marble fist.

Description

The Sanskrit word “Sundara” literally means “Beautiful” and this all new Planar Magnetic headphone fits this description in every way. Ultra-fine Diaphragm All New Planar Headphone Inherited from Hi-Fi man’s Advanced Technology Featuring Newly Developed Diaphragm that is 80% Thinner than the HE400 Series Resulting in a Wider Frequency Response, Faster and More Detailed Hybrid Headband Design With the weight spreading strap for outstanding comfort but with a more fashion conscious look with its sleek and sumptuous matte black finish. Form Follows Function With its all metal headband the SUNDARA is built to take the rigors of urban street life. The SUNDARA is as tough as it is beautiful. New 3. 5mm Headphone connector for enhanced durability Pocket Powered Performance The slim line Supermini is the perfect on the partner for the SUNDARA. The Supermini with its abundance of audio power output and the SUNDARA’s grace and poise makes them the velvet glove over a marble fist. Technical Data Specifications Frequency Response: 6Hz - 75kHz Impedance: 37 ohms Sensitivity: 94dB Weight: 372g


Product Dimensions 11 x 6.8 x 12.1 inches


Item Weight 13.1 ounces


ASIN B077XDWT7X


Item model number SUNDARA


Customer Reviews 4.3 out of 5 stars 326 ratings 4.3 out of 5 stars


Best Sellers Rank #379 in Over-Ear Headphones


Is Discontinued By Manufacturer No


Date First Available December 3, 2017


Department Unisex-adult


Manufacturer HIFIMAN


Shipping

This product includes free shipping to all US addresses.


Delivery

Unless otherwise stated above, most products arrive within 2-3 business days. Larger items may take 6-9 business days. Tracking information will be automatically provided as soon as your order ships.


View our full shipping policy here.

Returns

This product can be returned within 30 days of delivery for a full refund. Please visit our returns center to begin a return.

View our full returns policy here.

Features

  • Featuring Newly Developed Diaphragm that is 80% Thinner than the HE400 Series Resulting in a Wider Frequency Response, Faster and More Detailed
  • With the weight spreading strap for outstanding comfort but with a more fashion conscious look with its sleek and sumptuous matte black finish.
  • With its all metal headband the SUNDARA is built to take the rigours of urban street life. The SUNDARA is as tough as it is beautiful.
  • New 3.5mm Headphone connector for enhanced durability
  • The slimline SuperMini is the perfect on the partner for the SUNDARA. The SuperMini with its abundance of audio power output and the SUNDARA’s grace and poise makes them the velvet glove over a marble fist.

Description

The Sanskrit word “Sundara” literally means “Beautiful” and this all new Planar Magnetic headphone fits this description in every way. Ultra-fine Diaphragm All New Planar Headphone Inherited from Hi-Fi man’s Advanced Technology Featuring Newly Developed Diaphragm that is 80% Thinner than the HE400 Series Resulting in a Wider Frequency Response, Faster and More Detailed Hybrid Headband Design With the weight spreading strap for outstanding comfort but with a more fashion conscious look with its sleek and sumptuous matte black finish. Form Follows Function With its all metal headband the SUNDARA is built to take the rigors of urban street life. The SUNDARA is as tough as it is beautiful. New 3. 5mm Headphone connector for enhanced durability Pocket Powered Performance The slim line Supermini is the perfect on the partner for the SUNDARA. The Supermini with its abundance of audio power output and the SUNDARA’s grace and poise makes them the velvet glove over a marble fist. Technical Data Specifications Frequency Response: 6Hz - 75kHz Impedance: 37 ohms Sensitivity: 94dB Weight: 372g


Product Dimensions 11 x 6.8 x 12.1 inches


Item Weight 13.1 ounces


ASIN B077XDWT7X


Item model number SUNDARA


Customer Reviews 4.3 out of 5 stars 326 ratings 4.3 out of 5 stars


Best Sellers Rank #379 in Over-Ear Headphones


Is Discontinued By Manufacturer No


Date First Available December 3, 2017


Department Unisex-adult


Manufacturer HIFIMAN


Shipping

This product includes free shipping to all US addresses.


Delivery

Unless otherwise stated above, most products arrive within 2-3 business days. Larger items may take 6-9 business days. Tracking information will be automatically provided as soon as your order ships.


View our full shipping policy here.

Returns

This product can be returned within 30 days of delivery for a full refund. Please visit our returns center to begin a return.

View our full returns policy here.

Features

  • Featuring Newly Developed Diaphragm that is 80% Thinner than the HE400 Series Resulting in a Wider Frequency Response, Faster and More Detailed
  • With the weight spreading strap for outstanding comfort but with a more fashion conscious look with its sleek and sumptuous matte black finish.
  • With its all metal headband the SUNDARA is built to take the rigours of urban street life. The SUNDARA is as tough as it is beautiful.
  • New 3.5mm Headphone connector for enhanced durability
  • The slimline SuperMini is the perfect on the partner for the SUNDARA. The SuperMini with its abundance of audio power output and the SUNDARA’s grace and poise makes them the velvet glove over a marble fist.

Description

The Sanskrit word “Sundara” literally means “Beautiful” and this all new Planar Magnetic headphone fits this description in every way. Ultra-fine Diaphragm All New Planar Headphone Inherited from Hi-Fi man’s Advanced Technology Featuring Newly Developed Diaphragm that is 80% Thinner than the HE400 Series Resulting in a Wider Frequency Response, Faster and More Detailed Hybrid Headband Design With the weight spreading strap for outstanding comfort but with a more fashion conscious look with its sleek and sumptuous matte black finish. Form Follows Function With its all metal headband the SUNDARA is built to take the rigors of urban street life. The SUNDARA is as tough as it is beautiful. New 3. 5mm Headphone connector for enhanced durability Pocket Powered Performance The slim line Supermini is the perfect on the partner for the SUNDARA. The Supermini with its abundance of audio power output and the SUNDARA’s grace and poise makes them the velvet glove over a marble fist. Technical Data Specifications Frequency Response: 6Hz - 75kHz Impedance: 37 ohms Sensitivity: 94dB Weight: 372g


Product Dimensions 11 x 6.8 x 12.1 inches


Item Weight 13.1 ounces


ASIN B077XDWT7X


Item model number SUNDARA


Customer Reviews 4.3 out of 5 stars 326 ratings 4.3 out of 5 stars


Best Sellers Rank #379 in Over-Ear Headphones


Is Discontinued By Manufacturer No


Date First Available December 3, 2017


Department Unisex-adult


Manufacturer HIFIMAN


abunda_amazon_reviews This review is for anyone considering how to spend their money in pursuit of great sound without breaking the bank and trying to figure out if the Sundara can really slice and dice and make you a carmel macchiato with ultrasonic waves. I have owned Audio Technica's (give'm to somebody who doesn't know better), AKG 612, Hifiman 400i's and now Sundara's. Also mutliple dacs and amps. Nothing high end, I'm just a guy looking for great sound at reasonable prices. I gotta say, I like the road I've been on, great music is awesome and finding new things to enjoy in your music is like discovering secrets the artists dropped behind as little gifts for those who listen. Cool. First, if you do not own a decent set of headphones yet, you have two real choices. Sennheiser 6xx's from Massdrop at 200 bucks and the Hifiman 400i's at about the same price. They both beat the hell out of anything near this price. Buy the Senn's if you want a relaxing atmospheric sound or choose the 400i's if you are looking for energy and detail. You may have to wait for a drop on the Senn's and they are more expensive to amplify to their limits. You will also look like a nerd from the nineties (hopefully only when you are wearing them). I vote instead for the 400i's, I have enjoyed them for three years and it is amazing how far they will go with when driven properly. Next your going to need an dac/amp. If you know what a dac is then you need one. Best bang for the buck may well be the xduoo xd-05 + Burson v5i op amp mod (It's easy). It has nice groove with the 400i, that the IFI nano black label lacks (too sharp, no bass). Now your going to need some tunes. Youtube videos are letting you down sonically at this point. You need TIDAL. Hi-res, MQA, whatever, it sounds great and it's easy to find new stuff you like. Nice bonus is that most of the money goes to the starving artists themselves -I heard U2 have just started dipping into that POP TOUR money! Poor guys. What about the Sundara's? Are they better than the 400i's? Well yes, but before you drop 5 bills on headphones you better have a kick-ass dac and amp (time to sell that xduoo xd-05 I just recommended -its bass muddies up the Sundara). The Schiit Modi Multibit (Mimby) is phenomenal at $250. Crazy detail and space for either Hifiman. Don't even think about buying a Magni 3. Best amp for $100, but it still sucks like Tucker Carlson. Much praise has been heaped on that thing but it lacks low end punch and sounds shrill, with a sticky volume knob to boot. A great amp for the 6xx's, 400i's, and Sundara's is the Mass Drop Cavalli Tube Hybrid ($250). Part tube to smooth out the top end, part solid state this baby has a beefier bottom end than Rosie O'donnell! (don't worry, were cool, she's just mad because I forgot to capitalize the 'd'). And the highs are nice and spacey without grain or sharpness. Buy this before the Sundara's please. 400i vs. Sundara 400i is the price/performance winner here. I can put it on after the Sundara and still enjoy it's sound. It is also more comfortable. Sundara; I would say If you love the 400i's, have great gear upstream, and want the best headphone for $500, then it might be worth it to you. Most notably it has better bass. Lower and more detailed, almost startling on some songs. But it doesn't magically make the bass better on every song, only the ones with notes that hit very low. The highs may be more pronounced in some ways to the 400i but never sibilant or fatiguing. Overall, the highs are less one note, more interesting. The midrange is the one place the 400i may come out ahead. If you live for vocals, 400i may be your man by 10%. General use (documentaries, etc.) is better on the 400i. The Sundara has a peakyness in the mids that makes male voices sound a little too hifi if you know what i mean. It is listenable however, it just seems to be created to make great music first. I gave 4 stars because they are stiff, creaky, the metal yokes can scratch, don't articulate (a bit less comfortable), look a little plain jane, and don't blow the 400i's out of the sky. I'd rather look at, pick up and wear the 400i's. Overall it is hard to justify 2.5x the price of the 400i over the Sundara. I would send them back, but I'd have to get them off my head first. How I'd spend your moola $200 = 400i's $400 = 400i's + xduoo xd-05+ burson v5i $750 = 400i's or 6xx's + Modi Multibit + Cavalli Tube Hybrid $1000 = Sundara's + Modi Multibit + Cavalli Tube Hybrid $1500 = 1971 Buick LeSabre + 2 Bottles of Tequila + date with Rosie;;Reviewed in the United States on July 17, 2018;;4.0 out of 5 stars;;Beginners look at the 400i first, 400i lovers look here.;;Bearclaw;;;I bought the Sennheiser HD-660s new and HE400i headphones on the secondhand market so that I could gauge the sound signature of both products. I went into this test fully expecting to keep the HD-660s and re-sell the HE400i but figured I would give HIFIMAN a shot based off of the good reviews I read about them. I was completely shocked to find that I MUCH preferred the sound of the HIFIMAN planar magnetic drivers over the tried and true Senn. HD platform! I sent the HD660s back. After a few weeks of listening time with the HE400i's, I started to wonder what I was missing out on with there being much more expensive HIFIMAN products out there. After much research I pulled the trigger on the HIFIMAN Sundara. I do admit that I read some reviews about the Sundara that almost threw me off of them mentioning crappy build quality and inferior wiring/soldering, I figured since I have never been burned by faulty electronics before.. even my used gear I've bought I would be lucky again and have no problems. I finally got the Sundara's and opened them up and inspected them, they look very beautiful and are some of the best looking headphones out there I think. As I went to put them on my head I noticed the headphone band adjustment on one side was very loose and looks like it has been opened and closed so many times that the little detent that clicks into each height marker had worn them smooth and it wouldn't lock into place or click at each notch. The sound of these headphones are incredible, I was getting goosebumps they're that good! I have paired them with the JDS Labs EL DAC/AMP stack as well as the ifi iDSD Micro Black Label and they both sound fantastic. After 3 days of listening, the left driver volume cut down to about 20%. I swapped the cables from left to right and still barely any sound. Looks to have bad wiring between the jack and the driver. I can't believe that there are so many issues with a $500 brand new pair of headphones in 3 days... I am trying my luck with one more pair and will update later, should get the replacements tomorrow. Be careful buying these and only get them if you can easily exchange them through Amazon... ***EDIT*** I ended up returning these, too worried about the build quality. I bough the Audeze LCD-2 Classics and love them, much higher build quality and I prefer the sound As well.;;Reviewed in the United States on January 15, 2019;;3.0 out of 5 stars;;AMAZING... but not...;;eric schott

Shipping

This product includes free shipping to all US addresses.


Delivery

Orders placed now will arrive in 6-9 business days. Tracking information will be automatically provided as soon as your order ships.


View our full shipping policy here.

Returns

This product can be returned within 30 days of delivery for a full refund. Please visit our returns center to begin a return.

View our full returns policy here.

Top Amazon Reviews


4.0 out of 5 stars
By Bearclaw - Reviewed in the United States on July 17, 2018
Beginners look at the 400i first, 400i lovers look here.
This review is for anyone considering how to spend their money in pursuit of great sound without breaking the bank and trying to figure out if the Sundara can really slice and dice and make you a carmel macchiato with ultrasonic waves. I have owned Audio Technica's (give'm to somebody who doesn't know better), AKG 612, Hifiman 400i's and now Sundara's. Also mutliple dacs and amps. Nothing high end, I'm just a guy looking for great sound at reasonable prices. I gotta say, I like the road I've been on, great music is awesome and finding new things to enjoy in your music is like discovering secrets the artists dropped behind as little gifts for those who listen. Cool. First, if you do not own a decent set of headphones yet, you have two real choices. Sennheiser 6xx's from Massdrop at 200 bucks and the Hifiman 400i's at about the same price. They both beat the hell out of anything near this price. Buy the Senn's if you want a relaxing atmospheric sound or choose the 400i's if you are looking for energy and detail. You may have to wait for a drop on the Senn's and they are more expensive to amplify to their limits. You will also look like a nerd from the nineties (hopefully only when you are wearing them). I vote instead for the 400i's, I have enjoyed them for three years and it is amazing how far they will go with when driven properly. Next your going to need an dac/amp. If you know what a dac is then you need one. Best bang for the buck may well be the xduoo xd-05 + Burson v5i op amp mod (It's easy). It has nice groove with the 400i, that the IFI nano black label lacks (too sharp, no bass). Now your going to need some tunes. Youtube videos are letting you down sonically at this point. You need TIDAL. Hi-res, MQA, whatever, it sounds great and it's easy to find new stuff you like. Nice bonus is that most of the money goes to the starving artists themselves -I heard U2 have just started dipping into that POP TOUR money! Poor guys. What about the Sundara's? Are they better than the 400i's? Well yes, but before you drop 5 bills on headphones you better have a kick-ass dac and amp (time to sell that xduoo xd-05 I just recommended -its bass muddies up the Sundara). The Schiit Modi Multibit (Mimby) is phenomenal at $250. Crazy detail and space for either Hifiman. Don't even think about buying a Magni 3. Best amp for $100, but it still sucks like Tucker Carlson. Much praise has been heaped on that thing but it lacks low end punch and sounds shrill, with a sticky volume knob to boot. A great amp for the 6xx's, 400i's, and Sundara's is the Mass Drop Cavalli Tube Hybrid ($250). Part tube to smooth out the top end, part solid state this baby has a beefier bottom end than Rosie O'donnell! (don't worry, were cool, she's just mad because I forgot to capitalize the 'd'). And the highs are nice and spacey without grain or sharpness. Buy this before the Sundara's please. 400i vs. Sundara 400i is the price/performance winner here. I can put it on after the Sundara and still enjoy it's sound. It is also more comfortable. Sundara; I would say If you love the 400i's, have great gear upstream, and want the best headphone for $500, then it might be worth it to you. Most notably it has better bass. Lower and more detailed, almost startling on some songs. But it doesn't magically make the bass better on every song, only the ones with notes that hit very low. The highs may be more pronounced in some ways to the 400i but never sibilant or fatiguing. Overall, the highs are less one note, more interesting. The midrange is the one place the 400i may come out ahead. If you live for vocals, 400i may be your man by 10%. General use (documentaries, etc.) is better on the 400i. The Sundara has a peakyness in the mids that makes male voices sound a little too hifi if you know what i mean. It is listenable however, it just seems to be created to make great music first. I gave 4 stars because they are stiff, creaky, the metal yokes can scratch, don't articulate (a bit less comfortable), look a little plain jane, and don't blow the 400i's out of the sky. I'd rather look at, pick up and wear the 400i's. Overall it is hard to justify 2.5x the price of the 400i over the Sundara. I would send them back, but I'd have to get them off my head first. How I'd spend your moola $200 = 400i's $400 = 400i's + xduoo xd-05+ burson v5i $750 = 400i's or 6xx's + Modi Multibit + Cavalli Tube Hybrid $1000 = Sundara's + Modi Multibit + Cavalli Tube Hybrid $1500 = 1971 Buick LeSabre + 2 Bottles of Tequila + date with Rosie

3.0 out of 5 stars
By eric schott - Reviewed in the United States on January 15, 2019
AMAZING... but not...
I bought the Sennheiser HD-660s new and HE400i headphones on the secondhand market so that I could gauge the sound signature of both products. I went into this test fully expecting to keep the HD-660s and re-sell the HE400i but figured I would give HIFIMAN a shot based off of the good reviews I read about them. I was completely shocked to find that I MUCH preferred the sound of the HIFIMAN planar magnetic drivers over the tried and true Senn. HD platform! I sent the HD660s back. After a few weeks of listening time with the HE400i's, I started to wonder what I was missing out on with there being much more expensive HIFIMAN products out there. After much research I pulled the trigger on the HIFIMAN Sundara. I do admit that I read some reviews about the Sundara that almost threw me off of them mentioning crappy build quality and inferior wiring/soldering, I figured since I have never been burned by faulty electronics before.. even my used gear I've bought I would be lucky again and have no problems. I finally got the Sundara's and opened them up and inspected them, they look very beautiful and are some of the best looking headphones out there I think. As I went to put them on my head I noticed the headphone band adjustment on one side was very loose and looks like it has been opened and closed so many times that the little detent that clicks into each height marker had worn them smooth and it wouldn't lock into place or click at each notch. The sound of these headphones are incredible, I was getting goosebumps they're that good! I have paired them with the JDS Labs EL DAC/AMP stack as well as the ifi iDSD Micro Black Label and they both sound fantastic. After 3 days of listening, the left driver volume cut down to about 20%. I swapped the cables from left to right and still barely any sound. Looks to have bad wiring between the jack and the driver. I can't believe that there are so many issues with a $500 brand new pair of headphones in 3 days... I am trying my luck with one more pair and will update later, should get the replacements tomorrow. Be careful buying these and only get them if you can easily exchange them through Amazon... ***EDIT*** I ended up returning these, too worried about the build quality. I bough the Audeze LCD-2 Classics and love them, much higher build quality and I prefer the sound As well.

Recent Reviews


4.0 out of 5 stars
By Bearclaw - Reviewed in the United States on July 17, 2018
Beginners look at the 400i first, 400i lovers look here.
This review is for anyone considering how to spend their money in pursuit of great sound without breaking the bank and trying to figure out if the Sundara can really slice and dice and make you a carmel macchiato with ultrasonic waves. I have owned Audio Technica's (give'm to somebody who doesn't know better), AKG 612, Hifiman 400i's and now Sundara's. Also mutliple dacs and amps. Nothing high end, I'm just a guy looking for great sound at reasonable prices. I gotta say, I like the road I've been on, great music is awesome and finding new things to enjoy in your music is like discovering secrets the artists dropped behind as little gifts for those who listen. Cool. First, if you do not own a decent set of headphones yet, you have two real choices. Sennheiser 6xx's from Massdrop at 200 bucks and the Hifiman 400i's at about the same price. They both beat the hell out of anything near this price. Buy the Senn's if you want a relaxing atmospheric sound or choose the 400i's if you are looking for energy and detail. You may have to wait for a drop on the Senn's and they are more expensive to amplify to their limits. You will also look like a nerd from the nineties (hopefully only when you are wearing them). I vote instead for the 400i's, I have enjoyed them for three years and it is amazing how far they will go with when driven properly. Next your going to need an dac/amp. If you know what a dac is then you need one. Best bang for the buck may well be the xduoo xd-05 + Burson v5i op amp mod (It's easy). It has nice groove with the 400i, that the IFI nano black label lacks (too sharp, no bass). Now your going to need some tunes. Youtube videos are letting you down sonically at this point. You need TIDAL. Hi-res, MQA, whatever, it sounds great and it's easy to find new stuff you like. Nice bonus is that most of the money goes to the starving artists themselves -I heard U2 have just started dipping into that POP TOUR money! Poor guys. What about the Sundara's? Are they better than the 400i's? Well yes, but before you drop 5 bills on headphones you better have a kick-ass dac and amp (time to sell that xduoo xd-05 I just recommended -its bass muddies up the Sundara). The Schiit Modi Multibit (Mimby) is phenomenal at $250. Crazy detail and space for either Hifiman. Don't even think about buying a Magni 3. Best amp for $100, but it still sucks like Tucker Carlson. Much praise has been heaped on that thing but it lacks low end punch and sounds shrill, with a sticky volume knob to boot. A great amp for the 6xx's, 400i's, and Sundara's is the Mass Drop Cavalli Tube Hybrid ($250). Part tube to smooth out the top end, part solid state this baby has a beefier bottom end than Rosie O'donnell! (don't worry, were cool, she's just mad because I forgot to capitalize the 'd'). And the highs are nice and spacey without grain or sharpness. Buy this before the Sundara's please. 400i vs. Sundara 400i is the price/performance winner here. I can put it on after the Sundara and still enjoy it's sound. It is also more comfortable. Sundara; I would say If you love the 400i's, have great gear upstream, and want the best headphone for $500, then it might be worth it to you. Most notably it has better bass. Lower and more detailed, almost startling on some songs. But it doesn't magically make the bass better on every song, only the ones with notes that hit very low. The highs may be more pronounced in some ways to the 400i but never sibilant or fatiguing. Overall, the highs are less one note, more interesting. The midrange is the one place the 400i may come out ahead. If you live for vocals, 400i may be your man by 10%. General use (documentaries, etc.) is better on the 400i. The Sundara has a peakyness in the mids that makes male voices sound a little too hifi if you know what i mean. It is listenable however, it just seems to be created to make great music first. I gave 4 stars because they are stiff, creaky, the metal yokes can scratch, don't articulate (a bit less comfortable), look a little plain jane, and don't blow the 400i's out of the sky. I'd rather look at, pick up and wear the 400i's. Overall it is hard to justify 2.5x the price of the 400i over the Sundara. I would send them back, but I'd have to get them off my head first. How I'd spend your moola $200 = 400i's $400 = 400i's + xduoo xd-05+ burson v5i $750 = 400i's or 6xx's + Modi Multibit + Cavalli Tube Hybrid $1000 = Sundara's + Modi Multibit + Cavalli Tube Hybrid $1500 = 1971 Buick LeSabre + 2 Bottles of Tequila + date with Rosie

3.0 out of 5 stars
By eric schott - Reviewed in the United States on January 15, 2019
AMAZING... but not...
I bought the Sennheiser HD-660s new and HE400i headphones on the secondhand market so that I could gauge the sound signature of both products. I went into this test fully expecting to keep the HD-660s and re-sell the HE400i but figured I would give HIFIMAN a shot based off of the good reviews I read about them. I was completely shocked to find that I MUCH preferred the sound of the HIFIMAN planar magnetic drivers over the tried and true Senn. HD platform! I sent the HD660s back. After a few weeks of listening time with the HE400i's, I started to wonder what I was missing out on with there being much more expensive HIFIMAN products out there. After much research I pulled the trigger on the HIFIMAN Sundara. I do admit that I read some reviews about the Sundara that almost threw me off of them mentioning crappy build quality and inferior wiring/soldering, I figured since I have never been burned by faulty electronics before.. even my used gear I've bought I would be lucky again and have no problems. I finally got the Sundara's and opened them up and inspected them, they look very beautiful and are some of the best looking headphones out there I think. As I went to put them on my head I noticed the headphone band adjustment on one side was very loose and looks like it has been opened and closed so many times that the little detent that clicks into each height marker had worn them smooth and it wouldn't lock into place or click at each notch. The sound of these headphones are incredible, I was getting goosebumps they're that good! I have paired them with the JDS Labs EL DAC/AMP stack as well as the ifi iDSD Micro Black Label and they both sound fantastic. After 3 days of listening, the left driver volume cut down to about 20%. I swapped the cables from left to right and still barely any sound. Looks to have bad wiring between the jack and the driver. I can't believe that there are so many issues with a $500 brand new pair of headphones in 3 days... I am trying my luck with one more pair and will update later, should get the replacements tomorrow. Be careful buying these and only get them if you can easily exchange them through Amazon... ***EDIT*** I ended up returning these, too worried about the build quality. I bough the Audeze LCD-2 Classics and love them, much higher build quality and I prefer the sound As well.