ART Pro Audio Pro MPA-II Two Channel Studio Mic Preamp - Long & McQuade Music Educator Site
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ART Pro Audio Pro MPA-II Two Channel Studio Mic Preamp

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PROMPAII

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The new ART ProMPA II 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 ProMPA 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 ProMPA 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.

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

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

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 outupt (+4dB mode) / 0 VU = -10dBV output (-10dB mode) z
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)

Love It !!!1 of 1 customers found this review helpful

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Product ExperienceI own it
Closest StoreVancouver, British Columbia
Have been eyeballing one of these plus the PRO VLA compressor for 2 years to replace some 30 year old gear. Finally pulled the trigger on both. Love the MPA. Very clean and warm sounding. Great features. Can definitely hear the tube warmth. Bought this for vocals, acoustic guitars, guitar cabs and aux percussion. Sounds great on all, but here is the bonus................ I tried the High Z input on bass guitar just for fun and it sounds soooooo good !!! Coupled with the PRO VLA compressor, my bass sounds very fat and punchy. Again, can definitely hear the tube warmth. This will be my new go to method to record bass. For the money, you can't beat the value for both the PRO MPA and PRO VLA.
Posted by Ray on Jun 14, 2020
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JUST A GREAT UNIT FOR THE MONEY1 of 1 customers found this review helpful

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Product ExperienceI own it
Closest StoreStratford, Ontario
Well made with quality components. Sure, change the tubes if you want, but the stock tubes work fine, easily done if you want. Plug in headphones and mic, and use the MPA to dial in the sound and tube warm with an sm58 for example, and with +20 db switch and plus 18 or more on the dial gain, set the Output to zero - Impedance to match the mic - eg: 250 on the 58 really wakes up the mic, and listen for any noise in the phones. Basically zero noise floor. Sing and adjust dial gain to push the tubes more to get that sound. Now select High Plate Voltage and that alone with shape the sound again without increasing the noise floor. Plug the Output mic cable into the Audio Interface and now set the sensitivity or gain to record. When the mic is plugged directly into my Roland Octa Capture the Auto Sens will set the mic gain around 45 out of the max 50 to get a good fat track, there is a definite noise on the Roland Pre's. The hiss is there. Now plug the Output cable from the Art Pro into the Roland, and use Auto Sens, and the setting becomes about a 5 out of 50. Same full trace on the track - but the noise floor is ZERO. Dead quiet mic Pre's and the recorded track need little EQ or other processing. This unit is worth every nickel. Recording an acoustic guitar with Mid Side Matrix - another huge bonus.
Posted by IVM on Dec 18, 2019
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Best bang for buck2 of 2 customers found this review helpful

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Product ExperienceI own it
Closest StoreAbbotsford, British Columbia
After years of buying various preamps and compressors to try to achieve warm pleasant sound in a cold digital audio climate, this one delivers - with the high voltage tube preamp, you can drive it to natural warm tube compression and still retain clarity.
Posted by anonymous on Dec 2, 2013
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Great preamp and good price to boot!3 of 4 customers found this review helpful

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Closest StoreEdmonton North, Alberta
This preamp is slightly cleaner than my Allen & Heath GL2400-16 stock preamps, which I love. I got this to boost the quality going to my A&H ZED60-14 for portable recording (great combo). By the way, the stock 7025 tubes are great - all this review/forum chat about immediately swapping to Tungsol tubes is garbage - unless you want to degrade the quality.
Posted by anonymous on Jan 25, 2013
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Great Quality with Flexibility for Your Home Studio Creativity3 of 3 customers found this review helpful

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Product ExperienceI own it
Closest StoreEdmonton South, Alberta
I've had this preamp for over a year now and I'm very happy with it's creative possibilities, reliability, and flexibility. Two of the coolest features are it's stereo capability and the mid/side matrix configuration. Apart from those the metering is superb and the sound is silent, warm and accurate. I use this unit all the time to warm up my guitar and bass guitar signals, for all my condenser mics, and can't wait to use it with a ribbon mic to see how well it'll warm up that sound, too. Very cool preamp and very much worth it's weight in tubes and circuitry.
Posted by Michael Batke on Jun 29, 2012
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Sale Price: $359.00
Store Special Product - Pro MPA-II Two Channel Studio Mic Preamp
Model: PROMPAII
Serial: M180401227
Quantity Available: 1
Condition: Demo
Store Special Product - Pro MPA-II Two Channel Studio Mic Preamp Store Special Product - Pro MPA-II Two Channel Studio Mic Preamp