Douk Audio P1 Vacuum Tube Bluetooth Preamplifier, GE5654 Audio Preamp, Hi-Fi Headphone Amp, Stereo

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Your Sales Price $89.99 - $77.40

A quick rundown of this product’s key features:

Douk Audio P1 Preamp has been acclaimed by countless audiophiles worldwide, now we upgrade 6J5 to JAN5654 / GE5654 tubes according to many audiophiles’ feedback, the sound quality will be greatly improved.
With 3 kinds of audio input(Bluetooth/USB/RCA) and 2 kinds of output(RCA/3.5mm headphone), P1 can be used as HiFi tube Preamp, USB DAC or headphone amp with HiFi clear, warm, dynamic, sweet tube sound, bringing extremely high-quality listening experience.
Bluetooth 5.0 (QCC3034) supporting APTX-HD lossless transmission. PC-USB (CM6642) supporting 24bit 192KHz and compatible with Windows/Mac/Linux system, matching well with many audio devices such as iPod, Phone, MP3 players, TV, Blu-ray players, Echo Dot, CD players, etc.
Adopting NE5532 op amp+classic 47 headphone amp architecture which can drive 32-300 ohms headphones, and a bypass switch is specially designed to turn on/off the tone control, more convenient to enjoy original sound or obtain more delicate sound with treble and bass control knob, adding much fun and higher playability.
Exquisite appearance with proper size, blue and orange light decorating vacuum tube, makes it fashionable and attractive, bringing wonderful auditory and visual enjoyment, very suitable for home and desktop audio system.

Our Top Reviews

Reviewer: Tim Brown
Rating: 5.0 out of 5 stars
Title: Tubes Died 10 Months In oer Maybe they Didn’t (add a star back)
Review: Update (18Oct2023): I am rethinking my claim on the tubes being the problem during my initial review. Today, I was taking an inventory of headphones and IEMs and listing to some while I built the list. What I found was any headphones that have the TRRS for headphone cables with a built-in microphone, the DUOK 3.5mm connector seems to let the cable insert a mm or so too far which results in the same poor sound quality as before. A little adjustment to pull the plug out that one mm makes the headphones sound great. I have seen some Chinese audio gear that will actually come with a little non-conducting washer to put at the base of the tip to prevent this sort of thing.”Tubes Died 10 Months In” I say died, but it was more like someone put a Karaoke filter in line when listening to music from Amazon Music Unlimited where the USB was the connection to the Douk P1. There were no vocals other than very faint and distant barely audible sounds of vocals. I checked if I had any filters in place and chose the digital output of the Realtek sound card in my PC to my stereo receiver and the vocals were there. When I bought the DAC/AMP I had purchased the matched pair of tubes at the same time. I went and found those and replaced the original tubes and magically the vocals were back. If I were Karaoke DJ this could have been a great feature, but alas I am not. Maybe I should sell those tubes and make some $. Interested? Just kidding sort of…I used this DAC/AMP as my primary DAC for about six months before buying a Topping DX3 Pro+. This Douk P1 is decent and provides Bluetooth, USB, and analog RCA inputs with only analog RCA and headphone (3.5mm) as outputs. The advertised rate for digital audio when connected via USB 24bit,192Kbs. Where it sits now is next to my primary Windows desktop connected via USB where my previous set up was with a MacBook Pro on USB. In both instances, the unit was set to the advertised bit and speed in the OS and Amazon Music reported the capabilities as those numbers and a particular track of Heart/Barracuda was played at that rate as verified by looking at the UltraHD link in the player.Of the features I consider positives are the volume and tone controls. These make it easy to tailor the sound to the type of music I am listening to and the particular headphones I am using. The switch to activate a blue or orange LED in the tube socket to give a hint a that color works, but the effect is minimal unless you are in a dark room. Perhaps that LED color switch could have been better leveraged as gain boost and decrease option, but that might be considered redundant with a volume knob. So, maybe a LPF or HPF option. The other switches are for input selection and tone control on/off. As far as sound quality goes, I like the sound it produces. When the tone control is enabled, I have the bass knob indicator at about 3 o’clock and the treble at max (I have old ears with high freq hearing loss) with some Sennheiser HD660S cans. Turning off the tone control and turning up the volume knob gives me almost identical sound qualities with some more punchy high mids as would be expected from those headphones.Overall, I like this DAC/AMP and it will be the DAC I use while working in my office while the Topping Dx3 Pro+ will be my primary easy chair listening station DAC paired with my Mac and Cambridge Audio DVD89 CD player.

Reviewer: C. Pringle
Rating: 5.0 out of 5 stars
Title: Very much impressed!
Review: I’ve only had this little DCA for about a week. I am impressed by the clean sound signals it sends from my latptop to my studio monitors – the Presonus E5 XT. I am using the entire setup with my midi keyboard. Decided to go for a nice DCA instead of an audio interface such as the Focusrite Scarlett as I am not planning to record with microphone, guitars, etc.As recommended in previous reviews, I also upgraded the two tubes to the Russian Voskhod 5654 6J1P-EV/6ZH1P-EV available on the B*A*Y. Disclaimer: I am not a professional audiophile so it’s hard for my ears to tell apart all the sound nuances. I also haven’t tested them at high volumes or played around much with the trebles and bass. Having said that, the Russian tubes are of smaller profile and continue to produce the nice warm sounds that came with the original tubes that I will now have as back-ups. I may update this as I gain more experience with the sounds.The Bluetooth function has worked flawlessly and the sound quality out of my speakers has been great. A feature that I found odd but interesting at the same time is that its Bluetooth will connect to two phones or devices at the same time. This will allow two people to DJ back and forth without having to ask the other person to disconnect first. I didn’t see this being mentioned before in previous reviews.I wish the headphones line-out were the bigger female 1/4” connector to be inline with professional brands of audio interfaces and equipment. It is the smaller 3.5mm (1/8”) which I had to buy an adaptor to use with my 1/4” professional headphones jack. But as long as you have a solid connection, there should not be any sound quality degradation. In the back there are two RCA line-out connectors to your L/R speakers. The connection will be inherently “unbalanced” which is actually desirable if you run speakers up to 10 ft. Longer than than and you run into “balanced” territory. Just for grins, I could not find any vendors on Amazon that would sell RCA balanced cables. Balanced cables all came with 1/4” jacks or XLR connectors. Again, a balanced connection is only needed for very long cable runs where you will expect some noise interference (cables basically start working as antennae picking up noise from other cables and electronic equipment) at the expense of some slight sound degradation usually in terms of volume. So I figure the vendor has this little device mainly contemplated as a desktop where the speakers will be placed at a short distance. It works for my purposes, but it may not work for everyone.So far I am very pleased with the quality build, the aesthetics (looks retro in a very nice way) and, most importantly, with its high quality sound signals. Obviously, your choice of speakers/studio monitors ultimately will dictate the sounds you get in your ears.

Reviewer: r0ckteacher
Rating: 4.0 out of 5 stars
Title: Great, but could be better
Review: Overall, it’s really great, but 3 things I wish were different.I wish the usb was usb-c and provided power. I bought a usb-c to usb-b cable so I can plug in my phone to avoid bluetooth audio quality issues. My phone battery drains while using that setup. I’m not sure yet, but I think after the phone battery gets lower than a certain point, audio over usb stops working to save the battery.Also, the rca analog input isn’t really a passthrough and it goes through the pre-amp, which adds more distortion unnecessarily. So there should be a bypass switch or always bypass. I’m not interested in bass or treble or volume control.Also, if it had a phono MM input, I wouldn’t need a separate piece of equipment for that.

Reviewer: Amazon Customer
Rating: 5.0 out of 5 stars
Title:
Review: This unit provided me with a way to easily connect my headphones and conserve my PC speakers when i’m not using them.The amplification is strong and the sound quality is very crisp. I like that you can disable the effects using the switch on the front, though I usually leave them on.Like the title says, I’m not an audiophile – decades of misusing q-tips have made sure of that – but I can definitely hear an improvement.Not only that, I was able to connect my powered PC speakers to the RCA outputs (using an adapter) and the amplification noticeably boosts those as well.Because this unit also features an RCA input, I was able to use it to “switch” between my PC and Game Console (which share a display) while using the same speaker setup.I don’t intend to use the Bluetooth feature, but it also allows me to stream bluetooth audio from my phone to my desktop speaker setup, if the need ever arose for that.The device itself feels solidly built, and is compatible with many types of vacuum tube I might tinker with some day.Something I hadn’t considered is how warm the tubes get, which I suppose makes sense in hindsight (they’re essentially just lightbulbs, after all). I like the illumination on them but wish it was a bit brighter.My only complaint is the gold accents on the knobs. The knobs themselves are very clicky, and feel like they’re high quality, but I would love alternate color choices.I find the gold color to be a bit garish and am glad I can keep the unit tucked away.The fact that the color is my only complaint should speak volumes, though.I have nothing bad to say about the performance of this unit, it gets plenty loud for my already deaf ears and makes me feel like a nerd because look, vacuum tubes!!!!

Reviewer: Cliente de Amazon
Rating: 5.0 out of 5 stars
Title:
Review: No soy audiofilo. Pero he tenido oportunidad de escuchar diferentes amplificadores y dispositivos. Es curioso como este dispositivo, aparentemente modesto, logra enaltecer el audio de grabaciones, incluyendo mp3 en formato estándar. Al parecer se logra mediante un sutil efecto de reverberación por los bulbos, logrando la “calidez” que tanto se menciona. Es evidente dicho efecto, siendo grato al oido. No se podría comparar con un amplificador digital HD para FLAC u otro formato sin pérdida, ya que en realidad tendrían distinta aplicabilidad. Pero definitivamente lo recomiendo. Comento también que cambié los bulbos por otros que tanto se mencionan, y en lo personal no noté una radical mejoría. Pero es cuestión de apreciación.

Reviewer: Oliver R
Rating: 4.0 out of 5 stars
Title:
Review: Showed up after around a month. It worked very well and sounded amazing with my HE4xxs. However, within the first day of use, the vacuum tubes that came with it broke. I have no clue if it was due to a fault with the vacuum tube or a handling error on my part.

Reviewer: Hugo
Rating: 5.0 out of 5 stars
Title:
Review: Muy buena calidad de audio. Yo lo combiné con un amplificador de bulbos vintage, y el match fue genial.

Reviewer: Technutcal
Rating: 5.0 out of 5 stars
Title:
Review: Didn’t know what to expect but was very pleasantly surprised! Great sound and build quality for the money, not really tube like sound in my system (I am currently using Dared MP 7, Musical Paradise MP 301, MP 303, Dynaco ST 70) but extremely musical with the stock 6J5 tubes. On tone bypass mode the top end is ever so slightly rolled off, midrange a bit laid back but warm, not quite lush sounding (compared to all tube), bass is satisfying, but the sound is very well balanced and enjoyable! Maybe there’s a hint of tube sound, enough to take the harshness out of digital. Bass and treble controls fine tune the sound without degradation. Adds authority and rounds out the sound perfectly for my Grado SR325e and SR80s while taming the sibilance. Streaming Spotify using the USB DAC, Marantz CD5000 through the RCAs, Samsung Galaxy S10 via Bluetooth through an Adcom GFA 555, Klipsch RM51s and absolutely pleased with my purchase! Tube sound? Not really, it’s more of a tube buffer and maybe the tubiness is diminished by the solid state equipment downstream. But really great sound overall for the price? Definitely! Retro chic look rounds out the experience. Update: liked it so much I’ve ordered another one! Changed the tubes to GE 5654W for better detail and connected the preamp to a first gen netbook streaming Spotify through the built in DAC, vintage 70’s Yamaha integrated amp and Klipsch RM 15 speakers.Update: sadly after a few hours one of the tubes stopped glowing and the left channel died…. The other tube glowed much brighter than normal with lots of distortion in that channel…. Interchanged the two tubes and the issues changed sides too. Definitely the tubes… Swapped in the GE 5654 tubes I got off eBay for $5 and the pre-amplifier is singing again. The pre-amplifier is excellent… just the tubes are problematic. I’ve had similar problems with Chinese tubes so not a surprise. I have no doubt that Amazon would have looked after me very well but I had the tubes anyway and it was a cheap fix…. Actually upgrades the sound. For me, this experience in no way diminishes my impressions of the pre-amplifier. Love it!

Price effective as of Jun 28, 2025 18:33:18 UTC

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