RFT Made For RCA 12AT7 Well Matched Pair (9.6%) NOS ECC81

This is a well matched pair of RFT 12AT7/ECC81 tubes. They were manufactured in Poland for RFT, and one is branded RCA. They were manufactured to rigorous industrial standards so you can expect low noise and microphonics. These tubes have short, ribbed gray plates shaped like wings, white or red lettering, and a halo top getter. These are highly sought after RFT 12AT7 tubes, act quickly before they sell out!! More available upon request.

Be careful buying tubes from other sellers who list "matched pairs" but do not provide test results or specify the equipment that they use to test their tubes.

I personally tested this tube on my recently calibrated Hickok 600a and TV7D/U tube testers.

The results are as follows:

4,250/4,450

4,650/4,200