Art Digital MPA II
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ART
https://www.artproaudio.com
art@artproaudio.com
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MSC Distribution
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Digital MPA-II: The Pro MPA-II Spirit with the Decisive Advantage of Digital
Designed as a continuation of the ProMPA-II, the Digital MPA-II retains the tube preamp architecture, the musicality of a Class A circuit, and the advanced controls that made the range successful. The major difference is the integration of an A/D converter and a digital output section directly usable for recording. The result: you keep the color and dynamics of a true tube preamp while simplifying your recording chain to an interface, recorder, or digital console.
This evolution makes the Digital MPA-II a particularly relevant choice for modernizing a hybrid studio: you benefit from analog sensations at the gain, impedance, and harmonic saturation level while securing a clean, synchronizable digital routing compatible with multiple formats.
A Preamp Tailored for Studio Recording (Vocals, Instruments, Overheads, M/S)
With its 2 channels, the Digital MPA-II targets demanding home studios as well as studios seeking a characterful, versatile, and easy-to-integrate preamp. It excels on vocals (grain, warmth, presence), acoustic guitars (detail and width), electric sources via the Hi-Z instrument input, and stereo recordings: overheads, piano, ambiance, and M/S pairs.
The dual mono operation allows processing two independent sources, while the stereo mode and Mid/Side option facilitate ambient or guitar recordings in M/S with left/right summation. Per-channel controls (gain, output level, high-pass filter, phase, pad) make the preamp very practical daily, both for tracking and reamping previously recorded sources.
Advanced Settings: Shape Color, Dynamics, and Mic Compatibility
Variable Impedance and 48 V: The Right "Match" for Every Mic
Each channel features an adjustable input impedance: a powerful tool to influence a microphone's response, proximity effect, and low-mid management. Combined with the switchable 48 V phantom power, this flexibility helps you get the best from a modern condenser or a more classic dynamic mic, avoiding a too dull or conversely too aggressive capture.
High/Low Voltage PLATE: More Than Just "Tube Warmth"
The PLATE selector (high/low voltage) directly affects the behavior of the 12AX7 tubes. At low voltage, the sound is often softer, with subtle natural compression. At high voltage, the output gains in sustain, definition, and dynamic headroom, very useful on transients (percussions, guitar attacks) or for vocals that need to stay precise in a dense mix.
A/D Conversion and Digital Outputs: A Direct Path to Your DAW
The integrated converter provides selectable digital output formats: AES/EBU, S/PDIF, or ADAT. Format and sampling rates from 44.1 to 192 kHz are selectable on the front panel, as is the resolution: 16 or 24 bits. The two Wordclock connectors on the rear allow clock synchronization and stabilize the system in multi-device environments, ensuring coherent conversion and reliable stereo imaging.
For control, the large vintage-style backlit VU meters display analog levels, while the multicolor LEDs indicate tube gain and digital output levels. This lets you manage gain staging clearly, avoiding unwanted clipping while exploiting tube coloration whenever desired.
Technical specifications
| Number of channels | 2 |
| Valve | Yes |
| Rack unit | 2 |
| Tubes | 12AX7 for a warm sound |
| Power connection | IEC connector |
| Digital outputs | AES/EBU, S/PDIF, or ADAT |
| Adjustable sampling rate | 44.1 - 192 kHz, 16/24 bits (front panel) |
| Variable input impedance | 150 - 2400 ohms |
| Dynamic range | >110 dB (A-weighted) |
| Frequency response | 15 - 48,000 Hz (+0 -1 dB) |
| High-level frequency response | 15 - 1,200,000 Hz (+0 -1 dB) |
| Max gain | 75 dB |
| Max XLR input level | +19 dBu |
| Max instrument input level | +17 dBu |
| Max output level | 27 dBu (XLR) |
| Output impedance | < 47 ohms (XLR) |
| Dimensions (HxWxD) | 88 x 482 x 222 mm |
| Weight | 4.7 kg |
Questions frequently asked
Can the Digital MPA II be connected directly to a digital interface?
The built-in A/D conversion allows for direct output in AES/EBU, S/PDIF, or ADAT. The digital format, 16 or 24-bit resolution, and sample rate from 44.1 to 192 kHz are adjustable on the front panel.
How many preamp channels are available?
Two tube channels are available, usable in dual mono or stereo. The Mid/Side mode also allows for ambient recordings and M/S pairs with left/right summing.
Is the impedance adjustable for microphones?
Each channel features an adjustable input impedance and a switchable 48 V phantom power supply. This adjustment allows matching the load to condenser or dynamic microphones.
What effect does the high and low voltage PLATE selector have?
At low voltage, the 12AX7 tube circuit produces a softer sound with subtle natural compression. At high voltage, the output favors definition and dynamic headroom. This selector directly affects the tube behavior.
Can this preamp be synchronized with other digital devices?
Two Wordclock connectors on the rear panel allow clock synchronization in a multi-device setup.



