Mini Bluetooth Vacuum Tube Preamp USB DAC Headphone Amplifier Receiver APTX-HD. Bluetooth input is prior to USB input, if you want USB input please make sure Bluetooth input is disconnected. USB input doesn't support U-disk or Hard-disk, can connect USB interface of computer or mobile phones (Android system needs OTG cable and IOS system needs camera kit, please prepare by yourself). This is a preamp but NOT a amplifier or a phono preamp, CAN'T be used for turntables or passive speakers. The main purpose of L200 is to act as a "buffer" to sweet the sound.Multiple inputs and outputs for different purposes: Bluetooth / USB(plug-and-play) / RCA inputs and RCA / 3.5mm headphone jack outputs, L200 can be used as atube Preamp, a USB DAC or a headphone amp to satisfy different requirements of home stereo system. QCC3034 Bluetooth chip, supports APTX-LL/APTX-HD, lossless transmission with no delay. PCM5102A independent decoding chip, stronger decoding ability to get clearer sound. 2PCS NE5532 op amps, integrate pre-amplification and tone control, make sound full and mellow. Vacuum tube design for better sound: improve everything detail, transparency, immediacy, richness, tone associated with your music.
The sound is natural and delicate, warm and soft, dynamic and pleasing. 6J5 can also be replaced to 6J1/6J4/GE5654/6AK5/61n according to personal preference. Separate control of Treble & Bass: can independently adjust the bass and the specific proportion components in high-frequency sound to perfectly achieve HiFi effects. And with a bypass switch to turn on/off the tone control, more convenient to enjoy original sound.
Exquisite appearance with proper size looks cool and attractive, perfect functions and powerful performance bring wonderful auditory and visual enjoyment, very suitable for audiophiles who purue HiFi music. This item is in the category "Consumer Electronics\TV, Video & Home Audio\TV, Video & Audio Parts\Amplifier Parts & Components". The seller is "il2014-shpu" and is located in this country: US. This item can be shipped worldwide.