• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Antek AS-0505 as output trans

Wondering what the max power output this 50va transformer could deal with? Looking for use as a guitar amp, so 100hz and up is fine. I have a bunch of 6P3S tubes that I would consider using triode connected. 15W? Would be used as 8400 ohm primary to 16 ohm secondary.

edit: OMG I asked a similar question about 2 years ago LOL. yeah 15W would be fine if your are not needing too much low end.
 
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From the data sheet, .009 A open circuit, so 13K reactance at 60 Hz - and that's half the primary, so there's enough inductance at low level. Approaching saturation at 280V (magnetizing current almost double that at 240) so say 300V into 8400 is about 10 watts at 60 Hz, a bit more at 80 Hz (low E).