(2 customer reviews)




The NOS RFT 12AU7 / ECC82 / CV491 / CV4003 is a low noise and low microphonic preamp tube. It sounds great and is especially good for guitar amps because of its rugged construction. These RFT ECC82 tubes were made in Germany during the 1960’s.

Additional information

Weight 2 oz
Dimensions 3 × 1 × 1 in

2 reviews for RFT 12AU7 / ECC82 / CV491 / CV4003

  1. Narciso J. Fumero (verified owner)

  2. Jarrell (verified owner)

    I’m using these in a Primaluna Prologue preamp. I’ve been quite impressed with these tubes, good balance and a clean sound. They were kinda bright to start but opened up after about 10-15 hours. Excellent value for the money, Get em while you can. Very quiet and no microphony. Most test with close triode balance as well.

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