2-channel Tube Microphone Preamplifier with 48V Phantom Power, Selectable Input Impedance, and VU Metering
ART Pro MPA II image 1
ART Pro MPA II image 1
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Versatile Tube Preamplifier Steps Up Your Sound!

ART's Pro MPA-II is a value-packed 2-channel tube microphone preamplifier. It's loaded with the right complement of professional features to deliver a serious sonic upgrade for any project studio or mobile recording studio. For flexible flavor, the ART Pro MPA-II features variable input impedance, so you can dial in a range of tube tones to suit your microphones. What's more, dual-mono and stereo support, and a mid/side miking switch give you the flexibility you need to tackle a wide range of projects and recording setups with the ART Pro MPA-II.

ART Pro MPA-II 2-channel Tube Microphone Preamplifier at a Glance:
  • Two channels of flexible tube preamplification
  • Supports dual-mono and stereo operation, as well as mid/side miking
  • Large VU meters and multicolored LEDs display levels

Two channels of flexible tube preamplification
If you're looking to bring your recordings up to the level, there's nothing like introducing a quality preamplifier. And, with ART's Pro MPA-II, you'll have more than enough sonic range to dial in nearly any sound imaginable - no matter what kind of microphones you have in your mic locker right now, or the microphones you add to it in the future. That's because, on each channel you have selectable phantom power for your condensers. Plus, there's plenty of gain onboard for bringing your ribbon microphone signals up into usable levels. Beyond that, variable input impedance lets you draw out a rich range of tones from each of your microphones - use it to match the preamplifier to your microphones, or creatively mismatch tones for a unique sound. Plus, you can operate the ART Pro MPA-II at high or normal plate voltage, for an even wider range of sounds. There's also a per-channel low-cut filter to squelch issues with rumble.

Supports dual-mono and stereo operation, as well as mid/side miking
Your preamplification needs will vary depending on what you want to do and what you're recording - but, luckily, ART equipped the Pro MPA-II with the flexibility to meet your changing needs. You can operate the preamplifier in dual-mono or stereo, to suit what you're recording. There's even selectable support for mid/side microphone setups.

Large VU meters and multicolored LEDs display levels
Get an eye on what's going on using the ART Pro MPA-II's full assortment of metering. Onboard, two professional VU meters display input or output levels, while its multicolored LED arrays, with average or peak hold, show you tube gain.

ART Pro MPA-II 2-channel Tube Microphone Preamplifier 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
The ART Pro MPA-II is an incredible value-packed addition to any project studio wanting a step up in recording quality!

Additional Media

Pro MPA II User Manual
Studio Preamp Buying Guide

Tech Specs

Preamp Type Tube
Number of Channels 2
Frequency Response 15Hz-48kHz
Phantom Power Yes
Analog Inputs 2 x XLR, 2 x 1/4" (Hi-Z)
Analog Outputs 2 x XLR, 2 x 1/4"
Rack Spaces 2U
Height 3.5"
Depth 8.75"
Width 19"
Weight 10.5 lbs.
Manufacturer Part Number PROMPAII

Customer Reviews

Based on 42 reviews
Write your review

Great Tube Pre-amp

WOW ! I really was blown away by the sound and features of the ART Pro MPA II . I have used this on everything from Vocals to Bass straight in to my interface. At this price point you wont be sorry, In fact you'll probably wish you would have gotten one or maybe even two sooner.
Music background: DJ, Producer, Studio Owner


The ART MPA II is a great little preamp. It sounds great and it is extremely easy to use. The tube warmth is what I have been looking for for years. I use it with the Studio Projects B-1Microphone and an OSP Microphone. Both have large diaphram elements. I recommend it if anyone is looking for the warmth of a tube.
Music background: Recording and Live sound Engineer

compared to the high end

we have in the studio a UNIVERSAL AUDIO la 610 an this unit ART pro mpa ii,they truley sound alike, no difference.we put both of these up aginst each other an they both sound great.i try not to get caught up in the popularity contest,because that what most of this is but this art sound just as good as the ua la610
Music background: recording engineer

Good Quality - Extremely Low Cost

I give this 5 Stars just because of the quality you can get from this at this price point. I swapped the Chines tubes with 2 Mullard 12AX7's. This was my first preamp. I tracked half of Sho Baraka's Lions and Liars album with an Avant CV-12 going through this. Never had a problem with it. I have owned this for a few years already. Even though I have some more expensive pre's now I still use this in the studio. My advise is to get one and swap the tubes. It will do the job it was created to do.
Music background: Recording / Live Sound Engineer

ART Pro MPA II steps up to the plate

This new ART preamp is really impressive with its features: variable impedance (great for ribbon mics), plenty of gain, two different voltage settings for the tubes, a variable (!) hi-pass filter, large VU meters, and most importantly- a Mid/Side matrix! That's why I had to have this box- I love using an M/S mic setup for acoustic guitar, and this box is very handy! Great design, great, transparent sound quality, all for how much...? This ART is used as much as my other preamps, some of which cost ten times as much. Now, if it just had built-in tube- optical compression...
Music background: Producer, owner of STUDIO 330

Sweetwater Advice

Tyler Berggren

The ART Pro MPA II is the best value in an outboard preamp - bar none. I've got one that lives in my studio and sees A LOT of action. Drums, guitars, vocals, synths - they all enjoy getting a little tube massage. Everything from big, full, and natural to over-the-top hairy tube distortion is on tap here. (Mine shone even MORE when I upgraded the tubes!)
See also: ART, ART Preamps