our unique gm output test applies 225 vdc simulating actual operations plus filtered dc + leak short gas check
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plus full sound auditioned w/ closed back high resolution monitors and aira preamps, phono / mic / audio grade
clear micas! give several sessions or up to 100+ hours w/ your specific amps voltage to settle in
all tubes undergo a value-added refurb screening deox plus audio grade review process, one of a kind seller qc!
ships well packed worldwide, several rare collectibles in stock