[quote name='Mr. Foxen' post='1214795' date='Apr 29 2011, 07:45 AM'][url="http://basschat.co.uk/index.php?showtopic=3730"]See here.[/url]
Basically, everything is gain, hardly anything is master volume. The power section basically set at volume, and you only control volume at preamp level, before it gets to them. Last thing I had with an FX loop I used to bypass the preamp was an Ashdown combo, and the 'master' volume was bypassed.[/quote]
Not all amps are set up the same but on many if you plug into the efx return the master volume will be bypassed. It's better to be safe than sorry.
In regard to the speaker sim bypass on the V2 Vt Bass pedals, it enables the pedal to be used into the front end of an amp that has its high end emphasized. Most guitar and bass amplifiers are not flat response. When you plug one of our SansAmp products into a mixing console for direct use that is a flat response setting. If you were to go into a mixing console and say bump up the highs and bass and cut the mids the response would no longer be flat obviously (much like an amp) and you would have to compensate for this with different EQ settings on the VT Bass.