LJM PREAMP P9 Transistor Amplifier Board Class A Audio Power AMP for DIY
- Three stage filtering
- The first stage,LM317T produces by MOTOROLA ONSEMI
- The second stage LC filter
- The third stage RC filter
- Main filter capacitor adopts ULTRA ESR Panasonic LOW black gold new original FC series capacitor.
- Voltage regulator tube using MOTOROLA (M), ONSEMI and other regulators new original ones
- All transistors are original ;copper pin s,BC547C, all the magnification is about 600.
- THD+N <0.05%
- SNR >100 DB
- Frequencyresponse: 20HZ -20KHZ -0.2DB
- Input voltage: AC20V to AC28V (also can use AC12-0-12)
- Input transformer power > 5VA
- Quiescent current: 25 MA
- Voltage magnification = GAIN 10 times
- No potentiometer
- 1 x LJM PREAMP
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