I've seen very little on TB about the Vox AC1 for bass and I cannot quite understand why. I have one and it's probably the piece of equipment that gets used the most with my bass. I use mine as a headphone amp and constantly practice along to the built-in drum machine through either the headphones or link it to my PA. Also use the aux input to practice along to music from CD or the computer. The built in drum machine has some of the best beats I've found... by comparison the drumbeat choices on my Korg PX4B were quite lame and sounded fake. As well the Vox has much more volume through the headphones than the Korg if you want to play along to the real songs. The only thing I would change on the Vox would be to add a digital display in order to be able to set the drums say 120 BPM instead of sorta having to guess at the right speed. But otherwise it is first rate. I sold the Korg PX4B just because it was not getting used. Also it was significantly more complicated to use than the AC1, which a four year old could figure out. My most recent use is to take the little Vox amp outside on the deck and practice through it without using the headphones. Even at 1 watt, a plastic casing and two 3" speakers it gets about as loud and sounds as good my acoustic Dean EAB did. It won't keep up with an acoustic guitar, but quite frankly, neither would the Dean and it was PIA to play compared to any of my electric basses. In any case, for $60 CDN new, I have more than gotten my money's worth out of this little thing. I've travelled with it, used it in hotel rooms, used the drum machine through the PA for jams when we didn't have a drummer handy. It's a very nice little unit and I would highly recommend it. In my case it paid for itself by replacing an acoustic bass, the PX4B and a cheapie practice amp.