Classic Recording Studio Equipment

Vintage Digital

ART Digital MPA-II

ART Digital MPA-II Microphone Preamplifier

The all new ART Digital MPA-II delivers all of the same great features of the ProMPA with the added versatility of digital output. Like the ProMPA-II, each input circuit has 48v phantom power and features variable input impedance which can radically vary the overall performance of any high quality dynamic or ribbon microphone.

ART Digital MPA-II Microphone Preamplifier Details

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

In addition to XLR and 1/4″ analog outputs, the ART Digital MPA-II features a high quality A to D converter which offers digital connectivity on S/PDIF, ADAT, or AES/EBU outputs. A rotary control on the front panel allows selection of format and sample rates from 44.1 to 192 KHz and 16 bit dithering. There is also a push button for, and two word clock jacks, allowing loop-through.

The ART Digital MPA-II comes in a standard 2u space rack-mountable steel chassis, with CNC routed black anodized aluminum 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
  • 24-204KHz External sample rate
  • 44.1K, 48K, 88.2K, 96K, 176.4K, 192K Internal sample rates
  • 24/16 bit switchable dithering
  • Wide dynamic range A/D
  • Rotary Encoder for quick selection of sample rate
  • Separate analog and digital output level controls
  • Digital Level LED meters display both Average and Peak level
  • ADAT optical I/O Sync to incoming ADAT data rate
  • Switch selectable optical output (S/PDIF or ADAT) AES/EBU and S/PDIF outputs
  • Two word clock jacks allowing loop through

Specifications

Released

Analog Section:

  • 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 (Omega) adjustable (XLR)
    >800k (Omega) (Instrument)
  • Maximum Output Level: +27dBu (XLR)
  • Output Impedance:: < 47 (Omega) (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

Digital Section:

  • A/D Frequency Response:
    @44.1KHz sample rate: 10Hz to 21.25KHz (+0, -1dB)
    @88.2KHz sample rate: 10Hz to 42.50KHz (+0, -1dB)
    @196KHz sample rate: 10Hz to 81KHz (+0, -1dB)
  • A/D Dynamic Range: >112dB “A” weighted (typical)
  • A/D THD: <0.001% @1K (typical)
  • A/D Input Sensitivity: +12dBu min
  • A/D Insert Input Impedance: >10k (Omega)
  • 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

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The details provided above are drawn from historical documents like advertising brochures or user manuals. They’re shared without bias or review. This info is given solely for your consideration, helping you gauge its usefulness to you.

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