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ART Digital MPA-II 2-Channel Tube Microphone Preamp with A/D Conversion  

Sku #581818002000000

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An affordable 2-channel preamp with quality A to D conversion.

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 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 2 unit 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 wordclock jacks allowing loop through
 

Digital MPA-II 2-Channel Tube Microphone Preamp with A/D Conversion 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 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 in) 3.50 x 19.0 x 8.75
Dimensions: (H x W x D mm) 88 x 482 x 222
Weight: (lb/kg) 10.5 / 4.7
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