The ART ProMPA II is a high performance microphone preamp that can be configured for dual mono or stereo operation with selectable mid/side mic support summing the adjacent channel to decode left/right signals. Each mic input circuit with selectable 48v phantom power features variable input impedance which can drastically alter the performance of any quality dynamic or ribbon microphone.
The ProMPA II operates at either low or high plate voltage on the two integrated hand selected 12AX7 tubes for more variation of preamp tone and performance. The large lit VU output meters display output levels while multi coloured LEDs show tube gain. The ProMPA is designed to deliver years of reliable performance in your studio production space or on the road for live sound reinforcement. The unit is housed in a standard 2u space rack-mountable steel chassis with CNC routed black anodizes aluminium face panel. Features Variable Input Impedance For Flexible Microphone Voicing (150 Ohms To 2400 Ohms) Selectable Plate Voltage Large VU Meters Backlit Function Switches Discrete Class-A Input Microphone Preamplifier Low Noise at Lower Gain Settings Extremely Low Total Harmonic Distortion (THD) Wide Frequency Response Additional Front Mounted Instrument Input Jack Supports Mid/Side Miking Technique Operates at +4dbm/-10dbv Output Selectable Stereo/Dual Operation of Output Controls Automatic Instrument Input Selection Specifications CMRR: > 90dB Dynamic Range: > 110dB (“A” weighted) Equivalent Input Noise: -129dBu (XLR “A” weighted) Frequency Response: 15Hz to 48kHz (+0 -1dB) @ normal plate voltage 15Hz to 120kHz (+0 -1dB) @ high plate voltage Input Impedance: 150-3000 Ohms adjustable (XLR) > 800K Ohms (Instrument) Maximum Gain: 75dB Maximum Input Level: +19dBu (cannon) Maximum Instrument Input: +17dBu Maximum Output Level: +27dBu (XLR) Output Impedance:
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