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2 RCA 42EC4 42EC4A PY500 PY500A Vacuum Tubes Valves NOS NIB Lot Of Two April 16 2025 6 dB (-92 dB is

$213.38

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6 dB (-92 dB is the Maxi-Matcher's noise floor)

new in box GE 6J6 / 6J6A tubes tested to spec on our Paul Hart-calibrated TV7/U

It light to moderate surface noise

solid gray coatings on most of the bottles

It measured 60/60 where minimum (65%) is 40/40 and 100% is 62/62

2 RCA 42EC4 42EC4A PY500 PY500A Vacuum Tubes Valves NOS NIB Lot Of Two April 16 2025 6 dB (-92 dB isThese two new old stock, new in box RCA 42EC4A PY500A tubes tested to spec on our Paul Hart calibrated TV7 U.

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