This is a well matched pair of RCA 6AN8A vacuum tubes. These tubes have a 9 pin medium glass bottle manufactured by RCA. They both test very strong, with greater than NOS readings. These tubes test closely to each other. Both tubes are visually almost identical. These tubes were manufactured to rigorous specifications and you can expect low noise and great performance. Each tube has gray plates, red lettering, and a top halo getter. These are excellent RCA 6AN8A tubes that are highly sought after, act quickly before these sell out! More available upon request.

Be careful buying tubes from sellers who list tubes as "matched pairs" if they do not provide test results or the equipment that they tested their tubes on.

I personally tested these tubes on my recently calibrated Hickok 600a and my TV7D/U and the results are as follows:

42/90

44/90