Used to have an Acoustic B10 for my 2 and a half years of playing. I practice with headphones exclusively and borrow my instructor's fancy rig for shows. Got a GK MB115-ii. Totally sick amp, but I notice it seems to compress a lot of things that the B10 didn't. The headphone tone on the B10 was great, it was very bright and clear. The GK has a distinctly different tone, and no matter how I play with the gain and master volume, it seems like those low E string notes are compressed a bit.