Tube amps require high voltages to operate properly. Therefore, they are NOT suitable for battery operation.
Recently, Peter Millett introduced a very low voltage, hybrid tube headphone amp. So can it use batteries? No! Mr Millett's tube amp is not meant to be operated with batteries.
Originally posted by darkclouds If I'm not mistaken, the micro zotl can be powered by battery.
You're not mistaken. But it takes a 12v battery with some pretty hefty charge specs. And run time isn't great. I'm going to make a battery pack for it one of these days. The hard part to find is the appropriate travel bag...
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