Pure HIFI (High Fidelity) preamp 2.0 stereo, clean, transparent, detailed and rounded sound quality. The low frequencies are well-defined and powerful, the midrange is thick and full. The high frequency is clear and delicate.

The circuit is a worthy preamp, more relaxed, more detailed, more soft and charming than the average preamp, the sound can be compared to the sound of electronic tubes. The circuit architecture is an op-amp as the basic amplifier, adding discrete parts to improve the open loop gain, and using voltage and current dual feedback circuit to reduce distortion, the output tube used the original British famous tube ZTX450 ZTX550, Class A state output, the music taste is very good, very bold taste. The circuit architecture is an op-amp as the basic amplifier, adding discrete parts to improve the open loop gain, and using voltage and current dual feedback circuit to reduce distortion, the output tube used the British installed famous tube ZTX450 ZTX550, Class A state output, the music taste is very good, very bile flavor.