Chameleon Labs 500 Series - Manual (Page 7)

Technical Specifications
Microphone Input Impedance: 300Ω or 1,200Ω
Microphone Amplifier Gain: +25 dB to +80 dB in 5 dB steps.
Output Impedance: 100Ω
Noise: -115.5 dB
Maximum Output: +26 dB into 600Ω
Frequency Response: 20Hz – 20 kHz +/- 1 dB.
Dimensions and Weight
Weight: 2 pound 8 ounces
Dimensions: Width – 1.5”, Height – 5.25”
Depth to Rear of Mounting Surface: 5.938” =/- 0.02”
Power Requirements: +/- 16 V @ ≤ 130 ma, +48 V @ 5 ma