The information on the RFT tube is somewhat limited.RFT was a spin off of Telefunken.Some were even labeled as Telefunken.They were known for making great tubes at a better price.With a little research one may get more answers about this company and what people have said about theses tubes.From what I have found so far the reviews are very good for the RFT line of tubes.
Some comments
"The RFT ECC83 / 12AX7 is a durable tube with very low microphonics. The RFT ECC83 is well known as a fantastic hard rock "crunch" tube in Marshalls, Mesa-Boogies, and similar amps. They are slightly darker sounding than many other 12AX7/ECC83 tubes."
"If you want a true rock/blues tube then RFT 's are definitely something you should check out. These East German made tubes were also sold as Telefunken, Tronal and other companies and are known to produce a sound that is very close to Mullards. They are extremely low noise, plenty of gain, deep lows and a nice warm top end. Their breakup is great and they are very reliable and low in microphonics." |
