Join Date: Nov 2003
Location: North Adams, MA
Re: Tube hardness
^^ Ruby tubes are as well. I know there are others too. You can usually tell if you know who does make tubes - SED, Svetlana, Sovtek, Electro Harmonix, JJ/Tesla Mullard, (and some greats of the past: RCA, Sylvania, GEC (Gold Lions), GE, Phillips and the REAL Mullards). There are others, like some chinese companies that make really ****ty cheaply made tubes (some are even made of plastic.... some like their 12AX7s especially those made in the early 90s for their hi gain!).
I recommend SED Winged "C" for the poweramp for whatever types you can get them. Not Svetlanas... they are made by the same company but not the same quality. If you can't get SEDs of whatever type you need, then try JJs. For preamps JJs are smooth and Electro Harmonix are loud.