Features
1. Circuit design is modified based on the classical Marantz 7C and the component values are optimized.
2. Three 12AX7B vacuum tubes.
3. Use of WIMA / Solen MPK film capacitors, Nichicon Audio capacitors, BHC Averox / Philips BC capacitors, and Dale resistors.
4. Low voltage dropout regulator LT1085 is employed in regulating power supply for tubes filament, which gives a maximum output driving current of the IC is 3A which is far enough for filament power supply.
Specification
- Voltage gain: 24dB
- Gain flatness: <0.05dB for 20-20KHz
- Frequence response: 20-20KHz
- Input Impedance: 880K Ohms
- Output Impedance: 50K Ohms
- Input Sensitivity: 1.5V RMS
- S/N Ratio > 96dB
- THD+N < 0.01% @1KHz
- Stereo single-end input and output