Technical specs:

• Power: 48 V Phantom Or Two 9 V Batteries.  Can Also Be Used Passively
• Custom-Wound Cinemag Usa Output Transformer
• Converts Instruments To Mic-Level Signals Without Signal Degradation
• Ideal Solution For Plugging Your Instrument Direct Into Any Mic Pre
• Top-Quality Class A Components With Gold-Plated Traces On Circuit Board
• Rugged Aluminum Construction
• Pad: Variable From -3 To -30 dB
•  Balanced Output: 600 Ohms, Mic Level
• Input Impedance: 1 Meg Ohms
• Thd: .01% From 20 Hz To 50 Hz. Less Than .003% From 50 Hz To 20 KHz
• Frequency Response: 10 Hz To 90 KHz +/- 0.5 dB