While I am loathe to do so, I am selling my Acoustic Image amp as I downsize the studio. This baby has been meticulously maintained and shows few signs of wear. It also has all new front firing speakers (midrange and tweeter). I did not replace the down-firing bass speaker, as it was fine, but have included a replacement Eminence speaker that I also ordered direct from Acoustic Image (the replacement speaker is worth over 200 alone). This is a truly inspiring amplifier. I cannot say enough about the quality of both the sound and the effects. I used it with bass, acoustic/electric guitar and electric violin and it shone with all. The preamps are exquisite for a microphone in the 2nd channel as well. If you would like to try before buying, this can be arranged, just give me a shout over email.