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ART Digital MPA-II 2-Channel Tube Microphone Preamp with A/D Conversion

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581818 000000000
Product Price $399.0
  • Free Shipping (48 Contiguous U.S. States)
Open Box$351.12

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 i...Click To Read More About This Product

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An affordable 2-channel preamp with quality A to D conversion.

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 input or 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.

The Digital MPA-II comes in a standard 2 unit space rack-mountable steel chassis, with CNC routed black anodized aluminum face panel.

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

Own a stereo input channel that combines the advantages of tube sound with digital conversion.

Analog Section: 
Frequency Response 15Hz to 48 kHz (+0, -1dB) @ normal plate voltage
15Hz to 120 kHz (+0, -1dB) @ high plate voltage
Dynamic range: >110dB ("A" weighted)
CMRR: >90dB
THD: <0.005% (typical)
Equivalent Input Noise: -129dBu (XLR, "A" weighted)
Maximum Input Level: +19dBu (cannon)
Maximum Instrument Input: +17dBu
Input Impedance: 150-3000 Ohms adjustable (XLR)
>800K Ohms (Instrument)
Maximum Output Level: +27dBu (XLR)
Output Impedance: < 47 Ohms (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: >112dB "A" weighted (typical)
A/D THD: <0.001% @1K (typical)
A/D Input Sensitivity: +12dBu min
A/D Insert Input Impedance: >10K Ohms

Power Requirements: USA - 105 to 125 VAC / 60 Hz Export units configured for country of destination
Dimensions: (H x W x D in) 3.50 x 19.0 x 8.75
Dimensions: (H x W x D mm) 88 x 482 x 222
Weight: (lb/kg) 10.5 / 4.7

Review Snapshot

by PowerReviews
ARTDigital MPA-II 2-Channel Tube Microphone Preamp with A/D Conversion

(based on 5 reviews)

Ratings Distribution

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Reviewed by 5 customers

Displaying reviews 1-5

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(9 of 9 customers found this review helpful)


Relatively Perfect

By colin callahan

from boston

Comments about ART Digital MPA-II 2-Channel Tube Microphone Preamp with A/D Conversion:

I have a joemeek twinQ and a universal audio 4-710d, and this little guy holds its own. I end up using it a lot between vocals, synths and anything else, and all i had to do was change out the tubes. I went with c61 hammond AX7's, and they sound superb. This is a great addition to any home studio, and a fantastic alternative to spending 2 g's on an avalon. I am very happy i bought this, and fully expect you to be as well.
Has everything i wanted in a tube preamp for short money.

2 Hi-Z's, impedance &amp; low cut, able to raise the plate voltage (love that), SPDIF/ADAT, stereo mode and side micing?!? Pretty good.
Build quality is great.

Metal face, heavy knobs, big VU's, i don't gig it though.. so don't know how road-worthy it is.
Value is very high on this piece. If you bide your time and get it during a sale.. you'll be even happier. Remember you're going to spend a few bucks on new tubes.

(5 of 5 customers found this review helpful)



By random dude

from here

See all my reviews

Comments about ART Digital MPA-II 2-Channel Tube Microphone Preamp with A/D Conversion:

I just bought this thing from MF hoping that I could get a more upfront and warm sound like the pro studios get. I'm feeding this into a Motu 2408 MK3 and all my recordings have always sounded a little flat and lifeless. I plugged this thing in and right away POW! like I just stepped into a much better studio than what I had. I'm getting much bigger, warmer, clear sound with this thing. I'm going to upgrade the tubes of course, but I like what I hear so far. Good job ART.

(5 of 5 customers found this review helpful)



By The Giant

from Undisclosed

See all my reviews

Comments about ART Digital MPA-II 2-Channel Tube Microphone Preamp with A/D Conversion:

I used to record straight into my Mbox 2 and the pres are decent. But this blows the mbox pres away. REMEMBER TO CHANGE OUT THE STOCK TUBES!!! I switched to Tungsols. My vocals are now more upfront and following the manual really shows you how to get the oh so lovely tube saturation. I cant believe i thought my recordings were good without this preamp. With the waves ssl bundle, my vocals now sound like it was recorded at a major studio. great job ART. i am very pleased

(3 of 3 customers found this review helpful)


Lots of

By Richie-BrgV4

from philly

See all my reviews

Comments about ART Digital MPA-II 2-Channel Tube Microphone Preamp with A/D Conversion:

This pretty box does a lot of things for not a lot of dollars. It has every feature I wanted in a pre-amp, for a lot less than other brands. When the plate voltage is set low, the tube distortion sounds GREAT on guitar and vocals, adding a nice bite or growl to the dynamic peaks. At high voltage it sounds pretty clean. I really like the converter to S/PDIF which I send directly into a Yamaha AW4416 recorder. I like the seperate meters and seperate digital and analog output levels also.I should mention that my preamp has a gold faceplate, but this newer model appears to have identical features.One thing odd though, when the analog input is turned up very close to maximum, the knob seems a bit touchy or scratchy, and the gain really shoots up a lot. I thought it was a bad pot, but it's identical in the two channels. It's useable but annoying, I hope it's been tweaked in the II model. I've always used it in my home studio, I don't know if it's 'road-worthy'. I recommend it for the studio, it creates a nice tone, different from other pre-amps for not a lot of dollars, and it may do some things other pre-amps can't do.


I love this Product

By B Malley

from Hbg, Pa

About Me Professional Musician


  • Clear Sound
  • Easy To Use
  • Powerful
  • Professional Functions
  • Versatile


    Best Uses

      Comments about ART Digital MPA-II 2-Channel Tube Microphone Preamp with A/D Conversion:

      I love this Mic Preamp I use it for everything. Dope Product!

      Displaying reviews 1-5

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