This machine is a split machine structure, with an independent power supply case, a built-in linear toroidal transformer, and an electronic filtering and voltage stabilizing circuit. The output circuit of the host's phono amplifier part includes a balanced (XLR) output, with a single-ended output, which can be connected to a single-ended And balanced input power amplifier equipment, in addition, it also contains a volume controller to facilitate the adjustment of loudness.
The main features of the circuit are:
Choose fully discrete components to build the circuit, which is convenient for fine adjustment of various data parameters.
It contains MM and MC phono amplifiers, which can be adapted to the vinyl record players of most users on the market.
The main amplifier circuit chooses the field effect tube, which is convenient to reduce the sensitivity of the components to temperature changes and improve the distortion.
Choose a pure Class A circuit to form an amplifier circuit, which can effectively reduce harmonic distortion and improve sound effects
The phono equalization circuit does not use the feedback type circuit of the conventional integrated IC circuit, but chooses the attenuation type, which takes the characteristic of natural tone.
Some indicators:
Voltage gain (1KHz): MM: 45dB, MC: 65dB,
Maximum output: single-ended 3V, balanced 6V,
Distortion (1KHz, 1V output): MM: 0.8%, MC: 1.2%,
Signal-to-noise ratio (1KHz, without weighting): MM: 85dB, MC: 75dB
Input impedance: MM: 30KΩ, MC: 620Ω
Mains voltage: 220Vac
