Yes, zombie thread. But to answer the comments above, yes, I use this with my Kala U-Bass for the ukulele jams I accompany from time to time, as well as personal practice. BUT...I had to do these two things to make it playable: 1) it tended to whine with the high-pitched feedback, whichever of my electric basses I played; and 2) I needed more low end. So...I looked up the output transistor, and it takes a 4-ohm load. So I took it apart, soldered a 50pf capacitor from the tip to ground on the jack, and added an external speaker jack for a 1X15 cab salvaged from a dead '70's Polytone amp. The Ashdown tech I asked about it tried to ream me a new one, and I gave it right back to him and told him that is how we used to tame spurious oscillations in the tube amp era. He tried to tell me about blown amps and void warranty and I gave it right back to him that he had spec'ed the output transistor, he knew what it was designed to do, that this was for personal practice (and acoustic accompanying), I was over 50 years old, and the chances of "blowing" the amp were slim to none. Epilogue: yes, after also getting mine on the $50 closeout deal back then, and after the mods, it has worked perfectly, and continues to do so. Just don't push it. It will quack the speaker.