Ill do a little just woke up thinking out loud here:
Indeed the 1st version Q Tron has a DRY output in addition to the WET/Affected output. I guess one would need to have some engineering comprehension and look at the schematic or guts to determine if a buffer is used for either outputs or both. I don't know that, I do know buffers always seem to improve my EF performance, but I have several and its possible the old EH doesn't benefit as much bc it has its own. I somehow doubt it though. Boss pedals reportedly have a decent buffer in them, and the common theory with several pedals it is desirable to have a mix of true bypass and buffered pedals. I have always noticed superior performance when using a circuit which the buffer has been a primary goal of the pedal/gizmo; intended to not change the tone of the signal at all. Especially with EF's.