AIYIMA T8 6N3 Digital Tube Preamplifier Bluetooth 5.0 Hi-Fi Headphone Vacuum Tube Preamp for Home Wireless Receiver Audio Decoder Preamp PC-USB DAC APTX + with Remote Control

PC（AppleMusic） ―USB接続― AIYIMA T8 ― Pioneer M-10X ― Pioneer S-77twinSD といった構成です。以前はDAC兼プリアンプの段にnobsound P1proを使用していましたが、Bluetoothにノイズが乗るようになったのと、色々試してみたくなり、入れ替えました。 素のままでも十分に楽しめましたが、真空管の交換でさらに化けます。（DAC兼プリアンプとしての使用です） 6N3P-I に交換していますが、低音がいい具合に太り、とても気持ち良くリスニングできています。自分の好みとしては、P1 proよりいいです。 6N3P-EVや6N3P-DRも評価が高いらしいので、チャンスがあれば試してみたいと思います。 ちなみにBluetooth接続では、音質的には真価が発揮できていないと感じました。DAC自体も良いものを使っているようですし、音質的にはUSB接続がベストだと感じます。

This PreAmp has surpassed my expectations for the price point of it. I have only used the USB connection at this point. (I may not have completely read the listing, but I was pleasantly surprised to find a USB cable with an inline torroid (RFI prevention device) on it in the box.) I have this hooked up to a M2 Pro Mac Mini. At this time, it is hooked up to a discount store 2.1 computer speaker system. When the speakers were hooked up directly to the Mac via 3.5 mm to RCA cable (Monster brand), the sound output was just Mehh. I was ok with that, as I did not expect much from the speakers ever. With this, the speakers have come alive, more so than just the increase in gain from the pre amp. Although the EQ is just treble and bass, it helps greatly to tune to the speakers themselves, and as such the cheap speakers have much more authority. In addition, the pre amp provides a small amount of reverb, and also smooths out the sound itself, thanks to the tube in the mix. I do intend on getting another tube, probably a JAN 2457 (the number may be wrong), as I have a pair of those in a phono preamp as it does un-muddy the treble some. I also have noticed, after about a 30-40 hr burn in for the tube, that the audio is much more balanced and not as muddy. This is normal for tubes, so I will probably run with the stock tubes for right now, especially since the speakers will not do justice to upgraded tubes. Get this, you can't go wrong. I have been around hi-fi audio and stage audio my entire life, and this pre-amp hits extremely high for its price point and design. It is absolutely quiet, even at full gain output on all devices.

Me gustó, compacto con aluminio y se escucha muy vivo especialmente la voces. Mis Sennheiser 620 se escuchan mejor que con mi tarjeta de audio de mi computadora Realtek o iPhone 12 Pro Max. No se distorsiona con volúmenes altos. Y le saca más jugo a mis Sennheiser. Lo que si el driver es algo viejo usándolo con la computadora de fecha 2020. No lo trabajaron más en casi 6 años. Y requiere que lo instales manualmente.

I was trying to decide between this Aiyima T8 and the Douk P1, but this one won me over due to the remote control and optical in, which the P1 both lack. This (with the Aiyima A07 power amp) is replacing an SMSL AD18 that's going to my garage. I needed a versatile, inexpensive, and small preamp unit for my bedroom, and this is perfect for my needs. This and the A07 are currently feeding Emotiva B1+ speakers. My audio source is a Chromecast Audio connected to the T8 via optical in, and while the Sabre ES9018K2M isn't the newest DAC chip around, it is still very capable. I also tried the RCA, USB, and bluetooth inputs, and they all work well. One thing to note is that there's been a bit of confusion regarding the tube signal output. Some online reviews have stated that if you want the tube sound, you need to use the front 3.5mm headphone out only. After emailing with Aiyima, they confirmed that the tube signal also goes to the rear RCA out. In fact, there is no audio output at all if no tube is inserted. Anyway, I've been using a NOS 6N3P-E tube and am happy with the sound. Lastly, the bass and treble adjustments are nice feature. Since I'm using this in an upstairs bedroom where I do not want a subwoofer placed, a slight increase in bass EQ is all that my speakers need to sound more full-bodied when playing music. A slight negative though is that from what I know, the only way to adjust treble and bass is thru the remote control. If you lose or damage the remote, you're out of luck with EQ adjustments. Overall, I like this T8 a lot. I'm a fan of small budget hifi components, and this is perfect for my needs. This paired with the small and excellent A07 sound better than my outgoing AD18.

Buen producto pero caro