Bass related, toss up between an Ibanez AEB10 acoustic bass guitar, a MXR Bass Distortion, Boss GEB7 or a Boss ODB3. I found all of them were really underwhelming, the Ibanez sounded weak, felt uncomfortable, and was a regrettable purchase. The MXR sounded average on bass at best, it does however sound good as a guitar distortion when I plugged a Les Paul into it. And the Boss pedals are rubbish, the overdrive is awful, and the EQ is inadequate for a Bass Equalizer, too many wasted band on very high frequencies which could of been assigned to more mid frequencies to shape the tone, after years of trying to get it to sound good, I eventually just used it as a boost.