Postby MKB » 10 Sep 2008, 13:45
Very interesting tube, the ECC83 sub has a few differences.
The heater to cathode voltage is a bit lower (180V) than a standard ECC83, this is important in V2 in non master volume Marshalls. You'll need to watch this if you use it as a replacement.
They make a big deal about the internal capacitances being much lower than a standard ECC83, this would definitely change the tone of the tube. It might make the sound brighter, perhaps a lot brighter. It might also make an amp more susceptible to parasitic oscillation.
I plan to buy some of these as soon as they are available (and if they aren't too expensive) just to support the company, it's a wonderful thing that new vacuum tube designs are being developed. This is an indication that tubes will be around for a long time to come. And none of us want vacuum tubes to stop being produced.