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American Musical Supply
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ART Pro MPAII Microphone Preamplifier

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Product Description

The ART Pro MPA II two channel microphone preamp is the next generation in affordable high performance microphone preamp technology. Each microphone input circuit, with selectable 48v phantom power, features variable input impedance which can radically vary the overall performance of any high quality dynamic or ribbon microphone. The Pro MPA II can be configured for dual mono or stereo operation with selectable mid/side mic support, summing the adjacent channel, to decode left/right signals.

The Pro MPA II can operate at either a low or high plate voltage on the two integrated hand-selected 12AX7 tubes for wider variation of preamp tone and performance. Large back-lit analog VU output meters display input or output levels while multi-colored LED arrays, with average or peak hold, show tube gain.

Housed in a standard 2 space rack-mountable steel chassis, with CNC routed black anodized aluminum face panel, the ProMPA II is designed to deliver years of reliable operation in the studio, production facility, or on the road for live sound reinforcement.

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

Product Specifications
ART Pro MPA II Specifications:
  • Frequency Response 15Hz to 48 kHz (+0, -1dB) @ normal plate voltage
    15Hz to 120 kHz (+0, -1dB) @ high plate voltage
  • Dynamic range: >110dB ("A" weighted)
  • CMRR: >90dB
  • THD: <0.005% (typical)
  • Equivalent Input Noise: -129dBu (XLR, "A" weighted)
  • Maximum Input Level: +19dBu (cannon)
  • Maximum Instrument Input: +17dBu
  • Input Impedance: 150-3000 Ohms adjustable (XLR)
    >800K Ohms (Instrument)
  • Maximum Output Level: +27dBu (XLR)
  • Output Impedance: < 47 Ohms (XLR)
  • Maximum Gain: 75dB
  • Meter Calibration: 0 VU = +4dBu output (+4dB mode)
    0 VU = -10dBV output (-10dB mode)
  • High Pass Filter: single pole, 10-200 Hz adjustable
  • Power Requirements: USA – 105 to 125 VAC / 60 Hz Export units configured for country of destination
  • Dimensions: (HxWxD in) 3.50 x 19.0 x 8.75
  • Dimensions: (HxWxD mm) 88 x 482x 222
  • Weight: (lb/kg) 10.5 / 4.7


Helpful Info about the Manufacturer
Phone:  585-436-2720 Warranty:  1 year
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Overall Rating
General
Subject
Great Product for the Price
General
What is your overall opinion of this product?
I bought this unit to be my front in pre-amp for my recording studio, but also use it for live performance as well. It works great for acoustic guitar, electric guitar, bass, vocals and drums. I also use to track my midi sound modules. This adds natural warmth, and can be crystal clean, to pretty dirty distortion. This is a great pre-amp, it will simply boost your signal level with clarity, or if you want it can boost it with distortion, all at your control. This unit is very well built, while it does seem to add some noise when driving the tubes extremely hard, or if the signal isn't boosted enough, you can easily remove this with noise suppression or a gate. I would recommend this for anyone looking for any pre-amp, and if you are looking for a tube pre-amp this is a great unit to have.
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