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PSVANE ART series 12AU7-S/12AX7-S/12AT7-S/EL84-S vacuum tube Factory test and precision matching

Regarding matching:

all our tubes are matched in the factory production workshop. The match is accurate (not all tubes are matched).

We have the conditions and advantages to match multiple tubes (four, eight, ten) according to customer needs. The parameters are the same)

Buy 2 pieces, 4 pieces, 8 pieces = exact matching (matching group). No parameter drift.

Note: (After receiving the tube, please do not think it is a fake or shoddy product). The quality is guaranteed for 15 months.