ART Digital MPA II Tube Preamp

The ART Digital MPA II Tube Preamp is a value-packed 2-channel tube microphone preamplifier designed for superior audio fidelity. It also features digital connectivity for use with various digital processors and digital recording devices.

The ART Digital MPA II Tube Preamp delivers all of the same great features of the ART 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 ART 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 ART 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 ART 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 ART 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 Tube Preamp 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 Tube Preamp Specifications

• CMRR: > 90dB
• Dynamic Range: > 110dB ("A" weighted)
• Equivalent Input Noise: -129dBu (XLR, "A" weighted)
• Frequency Response: 15Hz - 48kHz (+0, -1dB) @ normal plate voltage, 15Hz - 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:
• Meter Calibration: 0 VU = +4dBu outupt (+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)

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