True. Also, if the amp has a tube rectifier, using a higher rated tube recto or solid state rectifier will reduce compression.Originally posted by justonwo
I think amps generally become more compressed as they are biased hotter. I think one solution is to bias the amp a little colder.
That's my vote as well. Like the earlier Boogies that it was in part based on, the TriAxis is a very compressed sounding preamp.Originally posted by John Phillips
I'm reasonably sure with that rig it will be the Triaxis.
One small note here is that most (all?) Mesa power amps that are fixed bias don't have a bias pot to change the bias voltage. So the bias voltage is "fixed" in that case. They require the use of power tubes that have been matched to run cooler or hotter at that fixed bias voltage. The bias resistor can be replaced with a pot for true adjustable fixed bias.Originally posted by Reeek
Fixed biased is adjustable. It's just not cathode biased.
It's not a difficult mod to add bias pots.Originally posted by markdurham
One small note here is that most (all?) Mesa power amps that are fixed bias don't have a bias pot to change the bias voltage. So the bias voltage is "fixed" in that case. They require the use of power tubes that have been matched to run cooler or hotter at that fixed bias voltage. The bias resistor can be replaced with a pot for true adjustable fixed bias.
markd
Glad the Shiva is giving you satisfaction. Hold on to that state of mind - it's precious. I'm an obsessive perfectionist, so I always seek ways of improving what I've got. But every now and then, I like to bask in the magnificence of stunning tone, and put my can't-get-no-satisfaction persona on the slow boat to China.Originally posted by devbro
Timbre Wolf,
Wow, where were you 3 months ago![]()
Ended up dumping the Triaxis and 2:90. Can't say I regret it though, the Shiva is turning out to be everything I ever wanted![]()