AIYIMA Tube T6 PRO Bluetooth 5.0 Tube Preamplifier Hi-Fi Headphone Amp Vacuum Tube Preamp for Home Audio Amplifier Wireless Receiver Audio Decoder Preamp PC-USB DAC APTX

I was not ready for what this little unit can do. Connected to my computer, it gave a "fresh" sound to many of my cd's. The stereo feels more "open" and with more clarity and detail. Supertramp's live album has a great sound, but now feels like a monster. Stage depth and presence is really good. I had not much time to play with it but tried the bluetooth from my Samsung phone and it pairs very easy and the sound quality is even better that with the computer in some cases. Good thing is that it works right out of the box. no need to look for drivers. You computer and android phone will recognize it without any issue. Still have to hook it up to a dvd or cd player and see how it performs but for now, I'm really impressed. The tubes that come with it sound fine but want to give a try later with other tubes so added to my order a pair of GE tubes which I plan to check at some time in the future as I read that these sound even better. Get a good pair of headphones and listen to your favorite music, you will definitely hear a difference, just be careful with the volume as it sounds loud! .If you don't want to spend a lot of money on a fancy preamp, go for it. You won't regret!

I'm a newbie audiophile, and i have used this as my DAC and headphone amp for a few months, and I’m honestly impressed. I've paired this with my Sennheiser HD 560S, it adds warmth, depth, and fuller bass without messing up the detail. First impression, it sounds like what sex feels like. Everything just sounds fuller and more alive, and makes my tidal subscription worth it, though other streaming platforms like Spotify and YouTube music also benefit from it. The build feels solid, and it looks great with the glowing vacuum tubes. One small issue: one of the tube LEDs went out after a short time. It doesn’t affect the sound or performance, but it does mess with the aesthetic a bit. The tone knobs are a nice touch for my preferred bass and treble balance, I just wish there was a knob for mid too. and Bluetooth works fine when I want it, though I mostly stick to USB. For the price, this little amp adds a lot of value. It’s a great entry into tube sound without breaking the bank.

Improvement in sound over my old BT receiver that broke down….i now have two like this . Working great.

I'm on my second device and this one just failed after about a week of use. While it was working, I was very happy with the sound quality improvement and performance. While it is a bit noisy, I really enjoyed the warmth and punch it added. I swapped the original tubes out for a set of 5654W and then it really started to shine. However, I've had the same failure on this one as on the first one I returned. Randomly, it will start hissing extremely loudly while playing audio. The hissing sound will come and go, sometimes going away entirely. But once it starts, it starts happening more and more frequently. I'm sending this one back and I don't think I'll request a replacement this time.

I received the unit on 2/7/23 and immediately set it up. It worked flawlessly and added the warmth I was looking for. On 3/15/23, 6 days after the return window closed, the left channel blew and it's on its way to the landfill. It worked for 36 days. When the seller read the review they reached out to me and all issues are resolved perfectly.

Super upgraded sound .....When I moved a few years back my NAD amp didn't survive the trip, Needed some MUSIC to unpack by ASAP so I hit the closest place I could get an receiver. Thinking I would worry about quality later as I was desperate, I ended up with a serviceable Sherwood, Speaker were a unique mix that I fell into that even audiophile friends thought sounded surprisingly good ,,,, It was a set up of an book shelf Infinity (which had a great tweeter, so so mid and a base with a bit of POP but no real fidelity ,,, I set those on to of a B&W traditional bookcase speaker with a pretty flat profile (great mids and fidelity in the base) Together they had the fidelity of much $ speakers...... This so so set up sounded good. NOW IT SOUNDS GREAT ...... Going to roll the Tubes and get some headphones. Will replace AMP with 2 AO7s soon

To be fair, as an audiophile, I wasn’t expecting $1,000 preamp audio reproduction for $100. Nevertheless, I didn’t expect the volume control to fail twice. The unit became unusable at lower levels due to extremely noisy volume switching, and the loss of a channel randomly, alone with added noise. This happen within the first 5 to 6 clicks on the volume control knob. Build quality is decent at the price point, sound quality before the volume control failing, was decent with the GE5654 tubes where installed at new, don't know what it sounded like with the stock tubes. I'm running the Cambridge Audio DacMagic 100 for music from my laptop, mainly Spotify. The main amplifier is a heavily modified RCA disign..120W X2 RMS class ab, 80V rail., sub amplifier is the NHT SA-3, 250W RMS - 6 ohm. All speakers are my design, two desktop monitors using the Italian Fatal 5" woofer, & Peerless 1" silk dome tweeter. The sub is a little complex, using a 12" facing forward and a Kef B139 facing backwards. It’s a 4 ohm system. If the upgrading of the volume control was implemented it would make a difference, not only mechanically, likely, sonically also, as the volume control is in the signal path.

I contacted the seller just waiting for a reply. I knew better to purchase this item. I decided to go cheaper and should have bought he Douk PI instead. The sound was awful so I purchased the 5654 tubes. This greatly improved the sound and it was acceptable but not great. My problem is the bluetooth sucks....doesn't work. The sync light acts like it connect but testing 3 devices none even recognize the bluetooth. I contacted the seller waiting to see the response. I do not use BT much but when I want to use it I would expect a product I purchased that has BT would work. Most likely I will have to return this for a refund. My take go for the Douk PI instead. Update: It took some time but the seller responded and we could not fix the issues so they offered a full refund. I upgraded to 4 stars due the response by the seller. If the product worked 100% they would have got 5 stars. It is a promising product just needs a little more engineering.