Douk Audio P1 Tube Headphone Amp
Douk Audio P1 Tube Headphone Amp
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Product Description
It may be small, but the P1 tube amplifier from Douk Audio can handle a huge range of applications. Equipped with an NE5532 op-amp, two 6J5 tubes, and a CM6642 USB chip, the P1 can be used as a hi-fi headphone amp, tube preamp, or USB DAC Read More

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Chicosnow
30
Nov 24, 2020
Looks like we’re closing in on the predicted “ship” date of 11/30.! Anyone heard anything? Sometimes this stuff goes early, so I’m wondering. Cheers.
MayDay94
23
Oct 22, 2020
This or the fx-audio tube3 for half the price? Both have almost same features but this one seems to have a DAC for all inputs while the fix-audio just does the conversion for Bluetooth. Never heard of either brand and I like the looks of the silver fox-audio along with the cheaper price tag, but this thing looks pretty neat as well...or just skip and save up for something like the dark voice.
bluesman
17
Oct 23, 2020
MayDay94, Tube-3MKII is $75.60 at amazon and is very close in spec to the Douk P1. So this Drop price of $45.00 is a good value. Note the P1 also has a tone control defeat switch and better ergonomics and appears the headphone amplifier is 2 to 3 times more powerful (160mW@32 ohms) if I am reading it correctly.
(Edited)
bluesman
17
Oct 21, 2020
All the details are on Amazon with pictures of the circuit board and lots of reviews too. It is a tube pre-amp with a headphone amp built in. Not an amplifier (for speakers). I have been eyeballing this for months. My use case is I have older self powered speakers that do not have base or treble controls on it, or the remote. The speakers need bass and treble equalization so this seems to fit the bill. I really do not care that much about the headphone jack but it is nice to have it as well as bluetooth 5.0. Looks like it has lots of good stuff in it for the price. This video shows a similar pre-amp and what it does to the frequency response curves compared to a speakers baseline response as you turn the base and treble contols. https://youtu.be/PD8s3BGTvgA?t=367

(Edited)
Chucko
11
Oct 22, 2020
Zactly
wer1
2
Oct 21, 2020
. I'm using a very inexpensive tube buffer now, but I'm sure this one, Dourk Audio P1, will make a bigger difference. For many of us tubes were once all there was and I miss them. I would venture back into tube amps but prices have skyrocketed over the decades . My last full tube amp was a HK Citation 2 (or 11 roman numeral for 2), I bought in the early 1970's for $120. Damn that amp was great. I think it sounded better that friends tube amps ( dynaco's, etc..) I think they would agree. It was relatively small but weighed about 70 lbs. Yes, it would warm things up in the winters in upstate NY. I wish I could find another one, it put a shine on every face. All the best, everyone who can should hear the tube life difference...
Keebler808
13
Oct 21, 2020
Can anyone confirm if the bluetooth is receive AND send? Or is it only bluetooth receive? Can I use my Bose headphones wirelessly connected to this?
It's listed under the input specs... so I would say this only received. That's also a very unusual use case you've stated there. I've not seen a tube or hybrid headphone amp output bluetooth... since bluetooth is digital you would have to have an ADC (Analog to Digital Convertor) added to this device. To receive bluetooth a simple off the shelf chip component could be used. Bluetooth headphones will sound the same regardless of the sending device (assuming a stable connection and the same codec is used). All the conversion occurs inside of your headphone, the source won't really matter.
Chucko
11
Oct 21, 2020
Suggestions for tube rolling on this little jewel? I suspect, as with most of these type of products, tube rolling will make a significant benefit. I did a quick search and it appears the tubes of this type, and suitable alternatives, are quite inexpensive! all to the good..
(Edited)
Fayne
1562
Oct 23, 2020
I'm saying it shouldn't make much of a difference either way. Most modern designs won't be driving its bias negative enough to matter, especially in designs where they keep compatibility between series. One of the primary differences between the two series of tubes is how negative bias is handled. The 5654 will instantly cut off completely after a few volts of negative. The 6K4 will slowly fade out as the negative bias is applied, losing gain but still providing amplification for quite a while (this is pretty much how tube auto-gain control happens). The 6K4 also draws near double the heater/filament current (0.3A @ 6.3V) of the 5654 (0.175A @ 6.3V), so will run warmer. The amplification curves are somewhat different between the two, but not drastically enough to make a huge difference. In all likelihood when you see tubes other than 6J1/5654/6ZH1P/EF95/6AK5 in these types of amps/preamps where the circuit is compatible with them, it is because the cost of tubes. The 6K4 China tubes are abundant and dirt cheap, while the 6AK5/5654/6J1 is somewhat more popular, thus slightly more expensive.
bluesman
17
Oct 23, 2020
I did not mean to imply anything as this is out of my league. Thanks for both of your replies. After reading some posts I would like to ask you this. Are the op amps are only used in the line out (to speakers) which is my main use case or are the tubes effecting both the headphones and the line out to the speakers? I am only looking at this as an alternative to the solid state Shiit Loki @$150 or the Rolls EQ570 @$119 equalizer, which while more expensive, have 4 tone controls.
(Edited)
Kyo9999
80
Oct 21, 2020
Widget!
DetonNation
73
Oct 21, 2020
Wow the design looks nuts. Lol how does it sound?
SoundMix
47
Oct 21, 2020
Agree it "looks" cool. My advice avoid purchase on the cool factor. It has tubes. It will not be accurate. Tubes never are. DO some research. Tubes are obsolete, that is unless you want to be cool. That said, tubes do make nice hand warmers in cooler climates.
RocknsouZa
5
Oct 29, 2020
I think that the engineers at VTL, Audio Research and McIntosh have a different opinion about tubes being “obsolete”.
SoundMix
47
Nov 7, 2020
Dinosaurs all. Living in the past. Selling to ignorant audiophiles vs enlightened. Even in the 70's McIntosh sold solid state amps that sounded better than their tube amps. I tested them back then. I chose the their solid state amps for my studio. The tube amps did make nice hand warmers though.
(Edited)
mksurfin7
44
Oct 21, 2020
This thing looks very cool... Anyone have a read on whether this is a true tube amp or a hybrid? At this price it seems probably too much to hope for all tube amplification. Looks like a really cool device though.
Rowdy2026
249
Oct 26, 2020
Literally no one knows what you’re on about...perhaps just stay away from ‘humming’ tubes.
SoundMix
47
Oct 28, 2020
I will continue to inform those who are wise enough to listen.