U5 / AVALON DESIGN DI Preamplifier For sale due to equipment reorganization. There is some wear and tear, but it works without any problems. Please check the photos for the power supply. *Accessories include only the power cable. ・Product Specifications Circuit Configuration: 100% Discrete, High Voltage Class A Gain: Switchable 3dB steps, Maximum Gain +30dB Input Impedance: 3MΩ, Unbalanced (Single-Ended) Maximum Input Level: +24dBu, Unbalanced, 400w Speaker Input Output Connectors (2): XLR type, Pin 2 Hot, Electronically Balanced Maximum Output Level Class A: +30dBu DC Coupled, Balanced 600Ω (Mic and Line) Maximum Output Level Class A: +24dBm Balanced 600Ω (Mic and Line) Noise: -100dB (Mic), -105dB (Line)