6J1 Tube Preamplifier Kit DIY Vacuum Pre Amp Board PRT-01A
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Product description
- PRT-01A using transistor connection, low distortion, good linearity, quiescent current set in 2.6MA, the whole class A working state.PRT-01A is designed to integrated board, DC filament power supply, high voltage with voltage regulator and electronic filter with direct streaking
- High pressure part AC200-240V, not less than 10MA
- D130
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