ART DIGITAL MPA II Professional Two Channel Tube Microphone Amplifier with Digital Outputs Rack Mount

<h2>Details</h2>
<p>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 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.</p>
<h2>Specifications</h2>
<p>Analog Section: Frequency Response 15Hz to 48 kHz (+0, -1dB) @ normal plate voltage 15Hz to 120 kHz (+0, -1dB) @ high plate voltage Dynamic range: &gt;110dB (“A” weighted) CMRR: &gt;90dB THD: &lt;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) &gt;800k (Omega) (Instrument) Maximum Output Level: +27dBu (XLR) Output Impedance:: &lt; 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: &gt;112dB “A” weighted (typical) A/D THD: &lt;0.001% @1K (typical) A/D Input Sensitivity: +12dBu min A/D Insert Input Impedance: &gt;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</p>
<h2>Key Features</h2>
<p>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</p>