MUSETEC Black MH-SA001 HiFi Preamplifier Fully Discrete Class A Audio Amplifier Low Resistance Volume Potentiometer

MUSETEC Black MH-SA001 HiFi Preamplifier Fully Discrete Class A Audio Amplifier Low Resistance Volume Potentiometer

Description:
- This preamplifier with fully independently developed circuits is designed using fully discrete circuits, finely adjusting the parameters of each functional circuit to achieve optimal working conditions. For example, there are JFET input modules designed for buffering input signals, current type constant current drive modules designed for volume conversion circuits, and high current output modules designed for signal output.

- We use a specially designed module circuit to convert the input voltage type audio signal into a current type signal, and then pass it through a constant low resistance network for discharge attenuation to obtain the "ideal" potentiometer that we have been seeking. This low impedance current transmission method completely avoids some of the problems caused by high input impedance in mechanical potentiometers and electronic volume chips that we have tried before, and ultimately contributes the sound we want.

- In addition to the "ideal" potentiometer, we place special emphasis on power supply design. We use different power sources to supply power to the left and right channels as well as the control circuit, and electrically isolate the digital control circuit and the audio analog circuit of the left and right channels through signal isolators, ultimately achieving the effect of completely independent left and right channels and control circuits without a common ground wire. This can be said to completely eliminate the crosstalk of left and right channel audio signals, as well as the crosstalk of digital power noise from the control circuit to the analog circuit.

Features:
- Separate all circuits of the left and right channels to achieve complete isolation.
- Design of Class A amplification circuit.
- Low resistance path current mode volume control circuit designed with discrete components.
- 256 level volume level, commonly used volume area adopts 0.25dB step resolution.
- Frequency response: -1dB, 1.3Hz ~ 900kHz
- The lowest point of THD+N is approximately 0.00049% (A weighted)
- There are 5 optional input ports, including RCA x 3 and XLR x 2
- There are a total of 2 output ports, with 1 RCA and 1 XLR output simultaneously.
- Support RCA input to XLR output, or XLR input to RCA output.
- External dimensions: 430 x 380 x 122mm
- Net weight: 12.2kg

Package Included:
- 1 x Preamplifier