I meant the amps with a line out.
Although looking at it now, I guess you're right, most amps that have a line out are probably aiming to let you record to your PC, which obviously has a line in and hence should not add the requirement of having to amp the signal.
I thought they didn't because the last time I played a gig the mixer added unnecessary gain to my signal ruining even my clean sound. I assumed that the sound man had put me into a balanced XLR in (probably with preamp gain of its own) because he didn't have a line in.
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