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

Specifications

\nAnalog Section: \n

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• Frequency Response 15Hz to 48 kHz (+0, -1dB) @ normal plate voltage \n15Hz to 120 kHz (+0, -1dB) @ high plate voltage
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• Dynamic range: >110dB (“A” weighted)
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• CMRR: >90dB
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• THD: <0.005% (typical)
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• Equivalent Input Noise: -129dBu (XLR, “A” weighted)
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• Maximum Input Level: +19dBu (cannon)
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• Maximum Instrument Input: +17dBu
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• Input Impedance: 150-3000 (Omega) adjustable (XLR) \n>800k (Omega) (Instrument)
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• Maximum Output Level: +27dBu (XLR)
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• Output Impedance:: < 47 (Omega) (XLR)
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• Maximum Gain: 75dB
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• Meter Calibration: 0 VU = +4dBu output (+4dB mode) \n0 VU = -10dBV output (-10dB mode)
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• High Pass Filter: single pole, 10-200 Hz adjustable
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\nDigital Section: \n

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• A/D Frequency Response: \n@44.1KHz sample rate: 10Hz to 21.25KHz (+0, -1dB) \n@88.2KHz sample rate: 10Hz to 42.50KHz (+0, -1dB) \n@196KHz sample rate: 10Hz to 81KHz (+0, -1dB)
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• A/D Dynamic Range: >112dB “A” weighted (typical)
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• A/D THD: <0.001% @1K (typical)
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• A/D Input Sensitivity: +12dBu min
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• A/D Insert Input Impedance: >10k (Omega)
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• Power Requirements: USA – 105 to 125 VAC / 60 Hz Export units configured for country of destination
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• Dimensions: (HxWxD in) 3.50 x 19.0 x 8.75
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• Dimensions: (HxWxD mm) 88 x 482x 222
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• Weight: (lb/kg) 10.5 / 4.7
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Key Features

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• Variable Input Impedance For Flexible Microphone Voicing (150 ohms To 2400 ohms)
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• Selectable Plate Voltage
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• Large VU Meters
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• Backlit Function Switches
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• Discrete Class-A Input Microphone Preamplifier
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• Low Noise at Lower Gain Settings
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• Extremely Low Total Harmonic Distortion (THD)
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• Wide Frequency Response
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• Additional Front Mounted Instrument Input Jack
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• Supports Mid/Side Miking Technique
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• Operates at +4dbm/-10dbv Output
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• Selectable Stereo/Dual Operation of Output Controls
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• Automatic Instrument Input Selection
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• 24-204KHz External sample rate
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• 44.1K, 48K, 88.2K, 96K, 176.4K, 192K Internal sample rates
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• 24/16 bit switchable dithering
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• Wide dynamic range A/D
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• Rotary Encoder for quick selection of sample rate
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• Separate analog and digital output level controls
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• Digital Level LED meters display both Average and Peak level
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• ADAT optical I/O
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• Sync to incoming ADAT data rate
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• Switch selectable optical output (S/PDIF or ADAT)
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• AES/EBU and S/PDIF outputs
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• Two wordclock jacks allowing loop through
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