Art Tube MP Professional Tube Mic Preamp, 1995, made in China

 

Link: artproaudio | Owner's Manual [PDF] | soundonsound

Key Features

• Provides Superior Preamplification for: Microphones, Instruments and Line Level Sources 
• Hand Selected 12AX7a Provides 70dB of Gain Smooth, Warm and Fat Sound Quality 
• Variable Input and Output Gain Controls 
• Excellent as a Tube DI 
• XLR and 1/4″ Inputs and Outputs +48 volts 
• Phantom Power 
• Phase Reversal Switch 
• Superior Sonic Performance to On-Board Preamps 
• TEC-Award Nominated Design 
• Portable, All Steel Construction

Specifications
Frequency Response: 10Hz to 20kHz (+0,-1dB)
Total Harmonic Distortion: <0.1% (typical)

CMMR:  > 75dB (typ @1kHz)

Dynamic Range: > 100dB (20Hz to 20kHz)

Equivalent Input Noise: -129dBu (‘A’ weighted XLR to XLR)

Input Impedance: 2k Ω (XLR), 840K Ω (1/4″)

Maximum Gain: 70dB (XLR to XLR typical)

Maximum Input Level: +14dBu (XLR), +22dBu (1/4″)

Maximum Output Level: +28dBu (XLR), +22dBu (1/4″)

Output Impedance: 600 Ω (XLR), 300 Ω (1/4″)

Power Requirements: 9 VAC @ 700ma (typ)

Dimensions: 5.0″D x 5.5″W x 2.0″H

Weight: 1.5 lbs