If I could afford a $400 practice tool I'd keep this but can't, and I tend to like my Genzler heads better and I'm on the list for a Sushibox PA. Sound great, warm, all the hubbub is real. No micro SD card or power supply. Velcro on bottom. I was able to power it with 500a 12v from my Eventide Powermax (Cioks DC7). The gain pot is a bit scratchy and I found the headphones to have more power noise and hum in them than plugging into the front end of my amp or into the power amp in. Trades welcome: short scale bass (under 7lb), jazz bass (under 7lb), Canon lenses.