Douk Audio Tube Phono Preamp: HiFi MM/MC Turntable Preamplifier | Headphone Amp with AUX Input | VU Meter for Record Players, Vinyl Systems Audiophiles (T4 Plus)
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Availability:
Only 7 left in stock, order soon!
Arrives
Tuesday, Jul 14
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Size: MM & MC Version
Features
- Vacuum Tube Preamp Warm Analog Tone: Built with imported JAN5725 tubes, the T4 PLUS delivers rich analog warmth with enhanced detail and clarity. The pluggable socket design allows tube rolling for customizable sound shaping to meet different audiophile preferences.
- MM/MC Phono Preamp Wide Cartridge Compatibility: Supports both MM and MC cartridges with selectable impedance (1K10), ensuring accurate RIAA equalization and clean amplification of low-level phono signals. Designed for vinyl users seeking improved resolution, transparency, and dynamic expression.
- AUX Input Upgrade Digital Sources Instantly: 3.5mm AUX input boosts phones, tablets, PCs, and MP3 players, converting low-level signals into a strong line output. Provides a noticeable improvement in clarity and fullness when connecting modern devices to stereo amplifiers or active speakers.
- VU Meter Retro Analog Monitoring: The integrated VU meter adds classic visual feedback with warm illumination, enhancing vintage appeal while showing real-time output dynamics. A distinctive visual centerpiece for home listening rooms and turntable setups.
- Headphone Amp Drive 32300 Headphones Easily: Built-in NE5532 headphone amplifier outputs up to 150mW@32, offering clean power for most headphones. Perfect for vinyl lovers who enjoy private listening sessions with smooth, detailed HiFi sound.
Item dimensions L x W x H: 5.39 x 1.97 x 5.75 inches
Manufacturer: Douk Audio
Maximum Supply Voltage: 12 Volts (DC)
Mounting Type: Freestanding
Brand: Douk Audio
Maximum Supply Voltage: 12 Volts (DC)
Mounting Type: Freestanding
Number of Channels: 2
Output Power: 150 Milliwatts
Maximum Output Power: 150mW
Item Dimensions: 5.39 x 1.97 x 5.75 inches
Specification Met: Technical Specifications Met
Manufacturer: Douk Audio
Model: SUC-T4 PLUS
Brand Name: Douk Audio
Warranty Description: 18-Month Limited Warranty
Part Number: SUC-T4 PLUS
Item Weight: 1.4 Pounds
Included Components: 3.5mm to RCA Cable ×1, DC 12V Power Adapter ×1, JAN5725 Vacuum Tube ×2, T4 PLUS Preamp ×1
Unit Count: 1.0 Count
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Jul 14
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
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!
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Reviewed in the United States on June 26, 2023 Reviewed in the United States on June 26, 2023 by Jesus S
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.
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Reviewed in the United States on January 27, 2026 by B. McQuinn
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.
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Reviewed in the United States on December 4, 2025 by Chris
Reasonably priced MM/MC preamp with a warm sound
Reviewed in the United States on June 3, 2026 by André Hofman
Very nice pre-amp, works great!
Reviewed in the United States on May 11, 2026 by Jeffery A. Needham
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.
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Reviewed in the United States on August 3, 2024 by iyqyqr
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.
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Reviewed in the United States on August 27, 2024 by David von Fleckles
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.
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Reviewed in the United States on May 10, 2023 by Bri B