This is a very user-friendly preamp with 3 channels and a booster on each channel. The clean channel is modeled after a Fender Bassman, the crunch channel after a Marshall Plexi, and the lead channel after a Soldano. It has a send/return loop. The headphone output and XLR direct output have built-in cabinet simulators. It's also good for practicing at home. There are some minor scratches and signs of use, but there is no major damage, and it can still be used. The vacuum tubes are in good working condition. Includes a dedicated adapter and the original box. The following is AI: This is an analog amp simulator with 3 channels and a wide range of tone controls. - Brand: Two notes - Model Name: ReVolt Guitar - Function: Analog amp simulator - Channels: American Clean, British Crunch, Modern Lead - Controls: Gain, Volume, Treble, Mid, Bass, Boost - Connectors: MIDI IN/OUT, Guitar Input, 18V DC Thank you for viewing.