U10 Mini Tube Headphone Amplifier, HIFI Stereo Valve Preamp for Home Active Speaker, with RCA AUX Jacks

This little headphone amp is tremendous value for money. Not only does it sound really good it has no trouble driving the most difficult headphones with it's 1100 mW output. Quality can be improved by op amp rolling if you like to experiment. I replaced the ones in mine with the Burson Audio V5i which made a big difference in the sound quality while still keeping the total cost around £100.

Good info for buyers new to headphone amps. There are two headphone jacks on the Douk U10. 3.5mm and 6.35mm. Yes you can buy adapters but even if they look bling, most of those adapters are bad quality (badly wired internally or a poor fit in the socket) and will cause a lot of noise on this amp (and other amps). You are best connecting with whatever the headphone comes with. If the headphone comes with a 3.5mm or 6.35mm connector then use that. If you really must connect with a 3.5 to 6.35 adapter buy a good one and not an unknown one. UGREEN do a decent cheaper one.

My setup: Denon DSD DAC, Schiit Sys, Schiit Magni +, Bellari EQ570, Douk Audio U10, Hifiman Sundara Closed Back, Sennheiser HD 569, Sennheiser HD 280, AKG Q701. Lossless FLAC and High Res Music including DSD 64. Audrivana Music Player for Mac. Mac Mini 2024. MacBook Air. Move over Schiit Vali, there's a new Budget Tube Amp in town. Yes, it's that Good. My older Tube Amp died and I researched until I concluded that this Douk U10 fits my budget without sacrificing on sound quality and I was pleasantly surprised. A 5V Power chord is a must, don't waste your time with a USB connection since it will introduce noise and will not reveal the true potential of this little gem. Warm up time for the U10 is about 15 - 20 mins. I was not getting the most of my Sundara Closed Back with my audio setup until I added a Bellari EQ570 and the Douk Audio U10 Tube AMP. My Sundara came to life since it needed a some EQ and a matching amp like the U10 and its now heavenly bliss listening to Lossless and High Res. music. The Sundara has bass to die for, this headphone is lush with perfect lows, mids and highs. I now understand why Hifiman headphones are so popular Don't be fooled by "Audiophiles/Audiofools". Get this little champ before it's discontinued for an another model. I plan to get a second one as a backup. This little champ is highly recommended but without an actual 5V AC power supply, it will be noisy. Its dead quiet with a 5V Power Supply sold right here at Amazon. Highly recommended.

So it may be silly to be in love with a small tube buffer headphone amp but goodness this device is so fun and sounds so good. I just recently bought a good pair of headphones, Kiwi by Linsoul, and I tried a different headphone amp did not like it so I took a chance on this rather inexpensive device. I had a couple of improvements in the tube department so I added those listen to it for a few days and then added two new op-amps. Lme49720. They have a lot of clarity and they work beautifully with the tubes. Currently listening to Fleesh, a great Brazilian band and their tribute album to Marillion. Beautiful. Thank you Douk.

Embalagem excelente, entrega no prazo. Ótimo equipamento, sonoridade muito boa. As vozes, os instrumentos musicais, apresentam-se com nova roupagem!

El producto no es malo sino que está acorde a su precio, es más yo creo que está sobrevalorado. Yo lo devolví porque el sonido que brindaba no me convencía. Muy plano y con falta de agudos por lo que la experiencia auditiva no era la mejor.

En musique c'est souvent très subjectif mais je ne vois pas du tout l'intérêt de ce petit ampli pour casque.