AIYIMA T1 PRO Tube Preamp Vacuum Receiver Home Audio Preamplifier with RCA/Bluetooth & Bass Treble for HiFi Stereo Amplifier&Powered Speakers,with AUX/12V Trigger Signal Output (T1 PRO) (T1 PRO)

Easy set up and it sounds great. Much better sound stage and instrument separation is better. Hooked it up to bridged A07 Max amplifiers with no hassle. I upgraded the tubes with a pair of Riverstone Audio GE JAN 5654W tubes and it was a good improvement. The bluetooth connection was fast and easy. Glad I got this, it improved everything.

Update: seller reached out and offered to replace my unit. Worked phenomenally well for about a week and then started making an absolutely horrid, extremely loud crunching sound randomly every few minutes.

This is a solidly made preamp with out-of-box great sound if the tubes are bypassed. The tubes that came with it made the sound muddy; kind of like a less intense version of speaking through a scarf that's in front of your mouth. After getting a cheap matched pair of GE tubes, the sound was much, much better, and was amazing for the price (the price of the preamp and new tubes together). If you get this and have a similar experience from the first listen, I'd recommend changing (rolling) the tubes. Also, I made the mistake of not recognizing this has no headphone out in the front. It's an obvious thing that is clear in the pictures, but sometimes I'm an idiot. There is a line out on the back of the unit that can sit in for a proper headphone output, but since it's on the back, it was ultimately too awkward to keep using for my needs. I am so impressed with the post-roll quality, in fact, that I'm giving it to a family member who's looking for exactly this kind of entry-level audio gear. The 4 stars is only because of the poor quality of the included tubes and not 3 stars because that issue is easily fixed.

Faulty, returned waiting for refund.

So I wanted to get a feel for what a tube preamp would sound like. I have a Hafler DH-220, fully restored and upgraded. Since it is solid state, I was thinking that I could warm it up a little with some tubes. Also, my streamer, the EverJoy DMP-A6 gen2, has the ESS chips in it, which can be bright and somewhat "shouty". So I though the tubes could possible smooth this out. My first impressions are that the sound I am getting, paired with my system, should not have only costed me 75 bucks. It really opened up the midrange and enhanced the realistic sound I was already getting from drums, snares, sax, voice, guitar. Anything that I play sounds awesome. It really makes me wonder what my system would sound like if I went ahead and got a high-end tube preamp, like PrimaLuna or the like. So, the test is a success. The trouble is, it may be too good for me to upgrade. I might not know what I am missing for now, but this little wonder is really something.

Setup was ridiculously simple, PC and iPhone found the Bluetooth audio device in seconds. I have the RCA inputs connected to a Scott (Solid State :( ) FM Tuner. This unit feeds the Tuner inputs on an H. H. Scott 222C (7189 Power tubes, 12AX7 audio tubes). Sounds great, nice and warm like you would expect tubes to be. I shall probably buy another to allow my daughter to stream to her EICO ST-70 (7591 power tubes and the same 12AX7 Audio tubes). I'll roll into some other tubes (6K4,6J4,5654) to see what changes. Overall, I'm very impressed with this unit.

Powerful easy to use

all ok. plays quite well. He came with an American plug in europe. need of adapter

息子のオーディオ向けに、パワーアンプのA07Max 2台と共に、 プライムセールで実勢価格11000円強で購入。 このプリアンプ、ハイエンドオーディオよりも音が良かったです。 トーンコントロールも増強、減衰がハイエンドオーディオ製品の様な音質バランス。 真空管特有の甘美な音質が乗りつつ、鮮度の高い音が出たのは素晴らしいと思いました。 全体的な音質は、透明度が深く、奥行感、拡がりも申し分無い。 トリガーアウトが付いているので、対応パワーアンプならば電源連動出来るという便利な機能まである。 AUX INがあるが、この部分を使用するとボリュームコントロールが無効になる事には注意です。 また、内蔵されているBluetoothは半分オマケで若干高調波ノイズが混じり気味で本格使用には向かないと思います。 間に合わせで使用する分にはよいかと。 当方では別に用意していたAPTX対応のBluetoothレシーバーの方が音に厚みがありましたので、そちらを接続しています。 個人的には、Bluetoothレシーバー部とAUX入力を削って、2系統ライン入力が可能なものか同一デザインのライン入力セレクターが発売されたら申し分無いなと思います。 星5個は、機能よりも音質に感動して、この評価です。

J'ai acheté l'ensemble de la vidéo en plusieurs fois, très content du son et je suis un peu difficile, tout est très bien emballé, pas de casse, je vous recommande, j'écoute sur Qobuz avec le dac en USB sur des enceintes Kef.

A real bargain very good sound next to the Aiyima A07!!! Clear recommendation !

Excellent reproduction of streamed music.

Fast and clean interface. Sounds great!