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