The Digital MPA-II 2-Channel Microphone Preamp from ART 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 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 2u space rack-mountable steel chassis, with CNC routed black anodized aluminum face panel.
ART DIGITAL MPA-II 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
- ART DIGITAL MPA-II 2-Channel Microphone Preamp1
- 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)
- A/D Frequency Response:
- Power RequirementsUSA – 105 to 125 VAC / 60 Hz Export units configured for country of destination
- Dimensions(HxWxD)3.5x19x8.75" (88x482x222mm)
- Weight10.5 lb (4.7kg)
