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Description：
Input voltage:
DC-280V two groups, each group is not less than 10MA
One set of DC12.6V, not less than 0.8A (for filament)
Recommended use of the tube: 12AX7 and its compatible tube
PCB size: 77*154*1.6MM double-sided spray tin
Note: This is an amplifier kits,Need to weld by yourself.
Package: 1 x PR07A Tube Preamplifier Board Kits (no tube) .
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