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Douk Audio

Douk Audio Tube Phono Preamp: 6CS6 Headphone Amp for Turntable (T4 Plus)

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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Oct 19
Order within 5 hours and 35 minutes
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Size: MM & MC Version


Features

  • 6CS6 vacuum tubes deliver warm vintage tone with rich vocals; pluggable sockets for easy tube rolling + for vinyl audiophiles
  • TL071 & JRC2068 phono circuit with 10-1K load switch matches MM/MC cartridges, output 300mV-3V line level + for turntables
  • Built-in NE5532 headphone amp drives 32-300 headphones, 150mW output, clear sound + for private late-night listening
  • Built-in VU meter, warm glowing tubes, aluminum knob & gold-plated terminals, retro style + for desktop audio space-saving
  • TI TPS5430 power & low-noise ICs, 110dB SNR, ultra-clean sound, 1.97x5.39x5.75in compact + for home HiFi setups

Description

Douk Audio T4 Plus offers a range of input impedance options, from 10Ω to 1KΩ, ensuring compatibility with various turntables and delivering a pristine, noise-free audio experience. With a 3.5mm AUX input, this preamp can amplify audio from smartphones, tablets, PCs, and MP3 players, enhancing sound quality and making it a versatile addition to any audio setup. T4 Plus combines a retro tube design with a VU meter, creating a visually stunning piece that evokes nostalgia while providing a dynamic and rich HiFi sound. Equipped with US JAN5654 tubes, this preamp enhances music detail and warmth, offering superior sound quality, especially in vocal clarity, compared to the 6J1 series. The pluggable tube socket allows for easy tube rolling, enabling users to tailor the sound signature to their personal preferences. The built-in headphone amp circuit (2*NE5532) is designed to drive a wide range of headphones from 32 to 300 ohms, providing a first-class listening experience with an unbeatable cost. Despite its mini size, T4 Plus boasts a solid aluminum alloy construction, gold-plated terminals, and a sophisticated design that makes it a high-performance, elegant addition to any HiFi system. AUX IN Phono IN Make Hi-Fi Affordable Estabilshed in 2013, Douk Audio & Nobsound is created by a group of enthusiastic music fans and professional audio experts. We design and make various audio equipments including amplifier, phono preamp, headphone amp, DAC, audio switch and so on. Our aim is "Make Hi-Fi Affordable" ! Ampapa Q1 DAC | Bluetooth Headphone Amp Douk Audio G7 Flagship Amplifier Ampapa D1 Bluetooth Amplifier Douk Audio P7 Phono Preamplifier Douk Audio U2 PRO DDC

Item dimensions L x W x H: 5.39 x 1.97 x 5.75 inches


Voltage: 12 volts_of_direct_current


Manufacturer: Douk Audio


Maximum Supply Voltage: 12 volts_of_direct_current


Minimum Supply Voltage: 12 volts_of_direct_current


Voltage: 12 volts_of_direct_current


Maximum Supply Voltage: 12 volts_of_direct_current


Minimum Supply Voltage: 12 volts_of_direct_current


Mounting Type: Surface Mount


Number of Channels: 2


Output Power: 150 Milliwatts


Package Type Name: Box


Supply Current: 1.5 A


Maximum Output Power: 150mW@32Ω


Item Dimensions: 5.39 x 1.97 x 5.75 inches


Material Type: Aluminum


Specification Met: CE


Manufacturer: Douk Audio


Model: SUC-T4 PLUS


Brand Name: Douk Audio


Number of Items: 1


Warranty Description: 18-Month Limited Warranty


Unit Count: 1 Count


Item Highlight: MM & MC Input, 1KΩ-10Ω Switch, RIAA EQ, 3.5mm AUX, NE5532 Output 32-300Ω, VU Meter Vintage Aluminum Chassis for Vinyl Stereo


Number of Packs: 1


Included Components: Preamp ×1; Vacuum Tube ×2; DC 12V Power Adapter ×1; 3.5mm to RCA Cable ×1


Item Weight: 1.4 pounds


Part Number: SUC-T4 PLUS


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Oct 19

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Compact and efficient
I got this as an upgrade to the preamp built-in to my lp-120USB turntable. I chose this one because it's aesthetically nice, I like the VU meter and the small footprint fits my setup well. There's orange LED's under the tubes to add extra glow, which you may or may not like. The volume dial is smooth and feels sturdy. The aux input may come in handy if I want to warm up my music streamer. It's a definite upgrade from turntable's preamp. It smoothed the sound and added the extra warmth I was looking for. I enjoy the sound, but maybe I'll upgrade the tubes later, since there's that option. Future proofed, in case I want to upgrade to a moving coil cartridge someday. ... show more
Reviewed in the United States on January 27, 2026 by B. McQuinn
    • Sweet looking Preamp at affordable price
Review Image by Jesus S
Review Image by Jesus S
Review Image by Jesus S
Review Image by Jesus S
Review Image by Jesus S
We recently decided to pull our fancy LP turntable out of storage after 30 years sitting idle. We got caught up with the recent interest of LP albums and it sparked a strong interest within ourselves. I had previously given away all my receivers, amplifiers, and speakers away. I decided to keep the turntable and realized in 2023. I needed a quick refresher course on what I needed to play LPs with what I currently have. I was against purchasing a receiver or powered speakers. I have a Bose IV Soundtouch System and a Sony Soundbar. Lesson 1 - Get a Preamp! I did an exhaustive review of entry and mid-level preamps. I set my limit at $100 and this Douk Audio T4 Plus Vacuum Tube Phono preamplifier was the Chosen One! It looks amazing with the needle movements and soft casting amber lights. The red volume control knob is a nice contrast and feels amazing as you dial it with your fingers. The two vacuum tubes included were a bonus and happy it still fell into my budget. Hooking this between my Denon DP-71l turntable and the Bose Soundsystem was very straightforward. Just need to plug in the RCAs and ground to the Phono In - Douk T4. And then Line Out RCAs to a 3.5mm plug inside the Bose. Once I had the settings set on the Bose, put the needle onto the track and enjoy! What I immediately noticed is the volume is low. I cranked up the volume knob on the preamp to the max and then raised the volume on the Bose. I am not sure if that is how it should be but it works in the meantime. I did notice the music sounding better after 30 minutes or so since the tubes needed that timeframe to assimilate all the signals for deeper and warmer tones. I am also ecstatic the preamp has its own power on/off setting. This Doul Audio T4 looks stylish and classy right alongside the rose wood of my turntable. Definitely happy we jumped back to listening to our LPs with a little help of this preamp. 5 Stars! One issue - I also received the preamp in an unsealed box. So weird. At least nothing fell out and all seems to be in order. Have a great one to you all! ... show more
Reviewed in the United States on June 26, 2023 by Jesus S
    • Expectations exceeded
There are a lot of decent affordable Chinese preamps available nowadays & that's a great thing for those of us on a budget. I had a Fosi Box 2 that I was very happy with until it died after only 3 years. I took a stab at this one that cost a little more hoping for an upgrade that'll last a longer. I can't speak for the longevity but I can report that it is an upgrade in terms of sound quality. The Fosi had a lot more bottom end & gain but this Douk has some of the crispest highs & an impressive amount of definition. Rush (2112, Farewell To Kings & Hemispheres) has never sounded better on my system. I do need to turn it up the volume a bit & boost the bass on my EQ but the results are breathtaking. Astetically it's very pleasing as well. The build is very unique & I can stare at the volume meter all day long. I'm not likely to use the additional features; headphone jack, AUX input & MM/MC capablity bit I suppose others will & it's nice to know I've got the option. If you're looking for a budget preamp, this offers great value with excellent sound. Give it a try, I think you'll be happy that you did. ... show more
Reviewed in the United States on December 4, 2025 by Chris
    • Amazing amp! if distorted run a while to run in the tubes.
Review Image by 89p13
Ive seen comments and videos talking about the bad sound quality being distorted. When I first powered it up, it was indeed pretty bad. But you have to give the 60ish year old NOS vaccum tubes time to wake up. After about an hour and half, it was clear and crisp with great lows and highs. I am not disappointed at all and seems much better than the built in preamp on the turntable. Mine arrived with Sylvania tubes. ... show more
Reviewed in the United States on July 20, 2026 by 89p13
    • Works well, packaging not great
As at least one other reviewer has noted, the box came UNSEALED. No tape, no gray bag, nothing. I verified I received all the arts that I was supposed to (preamp, DC supply, audio cable, 2 tubes, manual). However, the DC supply had a European plug (round pegs), not at all what we use in North America. I happen to have a stash of wall warts that matched the requirements of the preamp, so I was lucky. As for the sound, well I'm using it to digitize old 78 RPM records direct from a phono cartridge. So for me, it sounded fine. Plenty of headroom, no audio distortion. VU meter worked fine, although one meter for a stereo preamp is a little weird, but the purpose seems to be little more than eye candy. I am using the tubes that came with the preamp, but I may try other types of tubes to see if it really makes any difference. Physical construction is very good, feels solid. One small plus is the cartridge ground screw is the kind with a very small hole that accepts a 22 AWG stranded wire typical of the ground wires that come with most turntables. So it's not just a screw that is hard to get the wire to stay on. Overall I think this is a good value for the money. Just wish the vendor would seal the box before shipping, and provide the correct type wall wart (DC supply). Thanks for reading. ... show more
Reviewed in the United States on May 10, 2023 by Bri B
    • Does Just What I Expected!
I have only been using this for a couple of days, but have spun 6 albums in that time and I will say there is a noticeable difference, in a positive way, from my cheap Pyle preamp that I had been using for years. I found the sound is "warmer" from my home speakers and very clear and robust through headphones. If you are looking to upgrade from a cheaper model that's been powering your turntable, give this one a try. One thing to remember, is to let it warm up for 10 or 15 minutes after installing the tubes and turning the power on. My first impression was "oh no" when I initially turned it on and was listening to the Beatles "Abbey Road". I read up a little and several people on the 'net said to let it warm up. That worked out. I'm satisfied with this product and would recommend it as an upgrade from a cheap preamp. I can't speak to more expensive preamps will work out, just this one in comparison to a $15 Pyle. ... show more
Reviewed in the United States on February 5, 2024 by W.F.C.
    • A budget Phono Preamp/Headphone amp that works!
Not everyone needs a $500 Phono Preamp, or a $200 headphone amp. This thing is great. I was hesitant to buy it because several mentions were made that it wasn't a great headphone amp. I don't know what these people are doing to their ears, but I couldn't barely move this beyond the on/min notch on the volume control. It's LOUD in my Sennheiser HD650s. I have this hooked to a vintage SL1300, and I'm really, really impressed with it for being right around $100. It looks good, it allows me to have a second little listening area in my house, and I'm just thrilled with it. ... show more
Reviewed in the United States on August 3, 2024 by iyqyqr
    • Completely dysfunctional other than ability to turn on
Never , and i nean NEVER buy any of tgese units. Complete waste of money. The company promised if I went through them they would make it correct. They never responded to emails and now I have a $100 piece. First off , the meter can NOT be adjusted. Secondly you get an electrical shock, yes an actual shock from the case while trying to adjust it. And dismal audio quality to begin with You get a shock from the case while trying to adjust it shock on loss of high frequencies. ... show more
Reviewed in the United States on August 27, 2024 by David von Fleckles

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