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MPA-‐2 Operating Manual Ver. 1.2 2016
10
Specifications
Circuit topology: Fully discrete Class A. No overall global feedback. Transformer
coupled input, DC coupled output.
Input switching / Output muting : NEC sealed relays.
Inputs: 2 XLR.
Outputs: 2, 4 XLR’s. 2 paralleled connectors on each channel.
Front Panel Controls: Gain, Mute, +48V, LoZ, PAD, Polarity, AC Mains.
Metering: 10 LED’s ,1 Peak LED , Per Channel. Peak set to+24dBu output
Regulation: Independent bipolar regulation on each channel. Separate supplies for
analog , analog servos and logic control circuits.
Front panel control: 8bit microcontroller.
Gain: 20dB to 70dB, in 2dB steps.
THD+N: .002%
IMD THD: 4:1ratio .003%
Inter-channel Phase: Less than 5 degrees 20 -20kHz
Noise: @20dB gain 22-22K, A Wtd -101dBu
Input Impedance: 1.2K nominal.
Output Impedance: Less than 30 ohms.
Frequency Response: 10 Hz – 100kHz. +0 / -3dB
Gain Control Accuracy: +/- .5dB. Multiplexer controlled.
Maximum Input: +10dBu @ 20 dBu gain setting.
Maximum Output: +32dBu.
Gain Accuracy Between Channels: +/- .5dB.
Power Requirements: 115VAC / 230VAC 34 watts.
Fuse Requirements: 120VAC .5A time delay, 220VAC .25A Time delay
Dimensions: 19” x 12.5” x 3.5”.
Weight: 18 LBS, 22 LBS Shipping wt.