Tung-Sol6550usedTwelve Matched Tung-Sol 6550 TubesI purchased these 12 Tung-Sol New Production power tubes new as a tested matched set from Upscale Audio last year, for a Jadis Defy-7 amp. I only used these for about 1/2 hour while I was initiall...240.00

Twelve Matched Tung-Sol 6550 Tubes [Expired]


no longer for sale

I purchased these 12 Tung-Sol New Production power tubes new as a tested matched set from Upscale Audio last year, for a Jadis Defy-7 amp.  I only used these for about 1/2 hour while I was initially biasing my amp; they are virtually new.  I was misinformed that I could change my  amp from 6CA7s to 6550s.  But it was modified before I bought it, and 6550s are not the best choice.  So I have gone back to 6CA7s.  These were bought as a matched set of 12, so the Bias, G2, Transconductance values for all 12 are close.  My original cost from Upscale with shipping was $480.  Also please note this is Free shipping within CONUS, or I'll deduct $30 if local in Las Vegas.
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