RCA NOS 6SL7GT VT-229Up for sale is quite possibly the best matching pair of tubes i've ever tested w/ all 4 triodes measuring 1900gM (1600 being 100% NOS) See images for exact results. Vintage RCA JAN CRC-6SL7GT pa...130.00
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RCA NOS 6SL7GT VT-229 Perfectly Amplitrex matched/balanced [Expired]
no longer for sale