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Driving both inputs - Mesa 400 Plus

This thread is SO close to answering my question, I'm gonna throw it out here.

If you have a combo amp with active and passive inputs, and one volume knob, is ok or NOT ok to split your signal with an A/B/Y and plug into both inputs at the same time?

And if that's ok, can you run your effects chain into one or the other without blowing anything up?
 
This thread is SO close to answering my question, I'm gonna throw it out here.

If you have a combo amp with active and passive inputs, and one volume knob, is ok or NOT ok to split your signal with an A/B/Y and plug into both inputs at the same time?

And if that's ok, can you run your effects chain into one or the other without blowing anything up?

it will be *ok*... generally, the only thing that is happening in that sort of scenario is the signal is being padded (typically by 10-15 dB) on the "active" input. otherwise, the "channels" are identical--- they are otherwise of the same circuitry. sometimes (and maybe most of the time), there is some sort of switching jack that makes the jacks react the "same" when both are plugged into. for example, *any* vintage fender---when you plug into both jacks simultaneously, they are both attenuated.

are you proposing to use this as a way to run a parallel effects chain? shouldnt be any problem as long as one of your effects units doesnt flip the phase of the audio. you will have to blend the effects with an onboard control, as you wont have separate control over the two inputs at the amp, which might or might not suck greatly.

but you definitely wont hurt anything.