Electro-Harmonix Q-TRON - Brand: electro-harmonix - Model Name: Q-TRON - Power: 24V AC adapter - Features: Overdrive function This is a junk item. It powers on and produces sound, but the effect doesn't engage when turned on. Also, the volume becomes extremely low in some modes. It's a parallel import purchased online, so repair by Electro-Harmonix is not possible. Perhaps suitable for parts. There are no noticeable scratches, but it has been used quite a bit, so it shows some signs of wear. Thank you for looking.