This is a VOX MV50 Clean, featuring Nutube technology. It was used indoors (personal studio practice) for a very short time. Since it's not something you stomp on with your foot, there are no noticeable scratches. Comes with the original power adapter. I connected it to a Marshall 4x12 speaker cabinet (16Ω), and while it's not ear-splittingly loud, I felt the volume was sufficient for band practice. It's a clean amp, so the sound created by a multi-effects unit amplified through it didn't feel out of place (setting the amp simulator gain on the multi-effects unit a little lower worked well). I was going to use it for a live performance this month, but it's no longer needed because the venue prohibits bringing in external amps. If anyone would like to use it... - Brand: VOX - Model Name: MV50 Clean - Output Level Adjustment: With VU meter - Features: Uses Nutube technology - Connection Terminals: Input terminal, speaker output terminal Thank you for looking.