Any chance of getting a copy of the docs that you have for the F700? I've been hunting for them for months. I've got some partial info, but incomplete schematics.
And if the price don't shoot too high, I'm on them
A class A amplifier stage basically means that the device (be it tube or transistor) is conducting current throughout the complete cycle of signal swing. think of it as always on. It is the most linear(has the lowest distortion) of the different class operations, but also the most inefficient. I'm s...
A dpdt switch could be installed to bypass the transformer (you'd have to wire one per channel), but you run the risk of both foh and feed trying to feed phantom to the source. A better option might be to install a 4pdt switch such that it changes who gets the isolation (the feed or the foh). Person...
I'd just try it both ways. Set up one way, record a couple minutes. Setup the other way, record a couple minutes. Use your ears to decide which one you like better.
I've a paia headphone amp I built a few years back I'd sell for cheap. Works great. I switched to a power amp and passive attenuator, so am not using this.