So with my Q701 the +6db gain seems to work better, but for my T50rp, the +12db gain sounds better. Even after adjusting the volume to compensate. Interesting I must say...
The Q701 also sounds better with a +2db bass boost, and the T50rp sounds better with the bass at 0 with a +2db treble boost.
I love how versatile this little amp is.
If I adjust volume to compensate for gain, I really can't hear the difference between various gains on the E17.
But it IS a nice amp.