ART DIGITAL MPA II 2-Channel Instrument / Microphone Tube Preamp

ART Digital MPA II - Professional Two Channel Microphone Preamplifier with A/D Conversion

The Only Mic Preamp You Will Need!
The new ART Digital MPA II is similar to the Pro MPA II except this time, ART have added A/D conversion to each channel. It is the next generation in affordable high performance microphone preamp technology. Each microphone input circuit, with selectable 48V phantom power, 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.

Integrated Tube Variation for Superior Sound
The Digital MPA II can operate at either a low or high plate voltage on 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 show tube gain.

High Quality A/D Conversion
The Digital MPA II features a high quality A/D Converter providing digital connectivity through S/PDIF, ADAT, or AES/EBU outputs. The format and sample rates can be easily selected by using the dial on the front panel, providing options from 44.1 to 192 KHz with 16 bit dithering. In addition, dedicated connectors are mounted on the rear of the unit to allow connection to external word clocks if required.

Rugged Rack Mountable Chassis
Housed in a standard 2U space rack-mountable steel chassis, with CNC routed black anodized aluminum face panel, the Digital MPA II is designed to deliver years of reliable operation in the studio, production facility, or on the road for live sound reinforcement.

ART (acronym: Applied Research & Technology) are renowned for producing devices that feature unique gadgets and functions that make you think "Why hasn't anyone thought of that before?"

Specifications:

• 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
• 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
• 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

Technical Specifications:

• CMRR: > 90dB
• Dynamic Range: > 110dB ("A" weighted)
• Equivalent Input Noise: -129dBu (XLR, "A" weighted)
• Frequency Response:
  15Hz to 48kHz (+0, -1dB) @ normal plate voltage
  15Hz to 120kHz (+0, -1dB) @ high plate voltage
• Input Impedance: 150-3000 Ohms adjustable (XLR), > 800K Ohms (Instrument)
• Maximum Gain: 75dB
• Maximum Input Level: +19dBu (cannon)
• Maximum Instrument Input: +17dBu
• Maximum Output Level: +27dBu (XLR)
• Output Impedance: <47 Ohms (XLR)
• Meter Calibration: 0 VU = +4dBu output (+4dB mode) / 0 VU = -10dBV output (-10dB mode)
• High Pass Filter: Single pole, 10-200 Hz adjustable
• Power Requirements: USA - 105 to 125 VAC / 60 Hz Export units configured for country of destination
• Total Harmonic Distortion: <0.005% (typical)
• Dimensions: 8.75"D x 19.0"W x 3.50" H (222mm x 482mm x 88mm)
• Weight: 10.5 lbs (4.5 kg)

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
• A/D Insert Input Impedance: >10K Ohms
• Power Requirements:240VAC /50- 60 Hz
  Maximum Instrument Input: +17dBu
• Maximum Output Level: +27dBu (XLR)
  Output Impedance: <47 Ohms (XLR)
• Meter Calibration: 0 VU = +4dBu output (+4dB mode) / 0 VU = -10dBV output (-10dB mode)
• High Pass Filter: Single pole, 10-200 Hz adjustable
• Power Requirements: USA - 105 to 125 VAC / 60 Hz Export units configured for country of destination
• Total Harmonic Distortion: <0.005% (typical)
• Dimensions: 8.75"D x 19.0"W x 3.50" H (222mm x 482mm x 88mm)
• Weight: 10.5 lbs (4.5 kg)

Owner's Manual