ART DMPA-II
Mic Preamp with A/D Conversion, Two Channel

DMPA-II

The 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 input or 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 192kHz 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.

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 micing technique
• Operates at +4dbm/-10dbv ouptut
• 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 wordclock jacks allowing loop through

Analog Section

• Frequency Response: 15Hz to 48kHz (+0, -1dB) @ normal platevoltage
  15Hz to 120kHz (+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

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 Ohms
• Power Requirements: USA – 105 to 125 VAC / 60 Hz Export units configured for country of destination
• Dimensions (H x W x D): 3.50" x 19.0" x 8.75"
• Weight: 10.5 lbs

Our Part #  DMPA-II