new tung sol kt 120

Folks, beware that the KT-120 draws 1.8 Amps heater current per tube, as compared to the KT88 1.6A spec.
A stereo push-pull amp with four KT-120 tubes will draw 800 additional milliamps from the heater winding. The amplifier's power transformer will run hot and possibly fail in the long run.

I think this may be an excellent tube for a new design buit around its strengths.

IMO one can safely try KT-120s only on conservatively designed tube amps with over-specified power transformers that run cool and that use self-bias / cathode bias.

Fixed bias amplifiers need to be modified before one installs KT-120s, so this rules out most USA-made muscle push-pull amps.
I hope this helps.

Casouza,

Help me better understand "self-bias/cathode bias".

My Sonic Frontiers monoblocks use four KT-88s per amp. I have a knob on the amp that allows me to select one of these four tubes. Using a screw driver, I can turn a shaft with a slot in it to adjust the bias using a meter.

Is this a fixed bias amp?

Thank you.

So far, Jadis is the only company (that I've seen) that's announced they'll be incorporating the new KT120 tube into their amplifier.

has any one tried this tube in rogue m150s/180s? I wish there was more info on these tubes.