ART Digital MPA-II – Two Ch. Mic Pre w/ A/D Conversion

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

Key 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 to 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

Specification

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