The new ART ProMPA II is the next generation of affordable, high-performance microphone preamplifiers. Each microphone input circuit, with selectable 48V phantom power, has a variable input impedance that can radically vary the overall performance of any high-quality dynamic or ribbon microphone. The ProMPA II can be configured for dual mono or stereo operation with selectable center/side mic support, summing adjacent channel, to decode left/right signals.
The ProMPA II can operate at low or high plate voltage on the two hand-selected onboard 12AX7 tubes for greater variation in sound and preamp performance. Large backlit analog VU output meters display output levels while multi-color LED arrays display tube gain.
Housed in a standard 2U rack-mountable steel chassis, with a CNC-routed black anodized aluminum front panel, the ProMPA II is designed to provide years of reliable operation in the studio, in production facilities, or on the road for live sound amplification.
Features
- Variable input impedance for flexible microphone sound reinforcement (150 Ohms to 2400 Ohms)
- Selectable plate voltage
- Large VU meters
- Backlit function switches
- Discrete Class A input microphone preamplifier
- Low noise level with lower gain settings
- Extremely low total harmonic distortion (THD)
- Wide frequency response
- Additional front-mounted instrument input jack
- Support for side and middle miking technique
- Operates at +4dbm/-10dbv Output
- Selectable stereo/dual operation of output controls
- Automatic selection of instrument input
Technical characteristics
CMRRR: 90dB > 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 (gun)
Maximum instrument input: +17dBu
Maximum output level: +27dBu (XLR)
Output impedance: