Class A tube
Jul 30, 2011 at 8:50 PM Post #2 of 4
Class A yes. Near portable... Doubt it.
 
Jul 30, 2011 at 9:05 PM Post #3 of 4
None. I have a TTVJ portable Hybrid amp, nice sounding, not made any longer, the tiny tubes are just used as a driver. The thing about tubes is they require transformers which are big and heavy, and lots of volts. And they get hot.
 
Jul 31, 2011 at 4:25 AM Post #4 of 4
Do you have any idea how much heat true class A generates? Even if there was a way to minaturize it, it'd be far too hot to carry. And plenty hot enough to kill its caps and resistors.

You'd probably need something like a car battery to power it, as well.
 
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