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ART Digital MPA II Two Channel Tube Mic Amplifier with Digital Outputs

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Seattle_750 Shoreline, WA US
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  • USPS Priority Mail:  $53.47
  • FEDEX Home Delivery:  $28.23
Details
  • New or Used USED - see additional info
  • Item Condition Normal wear and tear with visible signs of use
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  • Item # 48229308
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Description

Up for auction today is an ART (Applied Research and Technology) Digital MPA II Two Channel Tube Mic Amplifier with Digital Outputs.

From Website:

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. The 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 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 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 wordclock jacks, allowing loop-through.

The Digital MPA-II comes in a standard 2u space rack-mountable steel chassis, with CNC routed black anodized aluminum face panel.

Specifications

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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