This is an EBS ValveDrive. It's an older model without a DI. Please note that it runs on AC power. It produces a warm, full distortion sound. - Model Name: ValveDrive - Brand: EBS - Function: Dual-mode vacuum tube preamp - Controls: Volume, Treble, Middle, Bass, Gain - Input/Output: Input, Output - Power: 12V AC 500mA - Condition: Shows signs of use Thank you for looking.