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Applied Research & Te c h n o l o g y • 215 Tre m o n t St., Rochester, NY 14608 • USA • 585.436.2720 tel • 585.436.3942 fax • w w w. a rt p ro a u d i o . c o m

F r om the innovative minds at ART.

F rom the innovative minds at ART.

D I G ITA L MPA

™

2 CHANNEL MICROPHONE PREAMPLIFIER w/ DIGITAL OUTPUTS

A professional tube microphone preamplifier is defined

by warmth,presence and clarity – core elements which

make a performance truly come alive.

Years of research and development have resulted in the

creation of the ART Digital MPA. Every detail has been

closely scrutinized to ensure that the Digital MPA

performs to incredibly high standards, and that it’s tone,

functionality and performance will satisfy even the most

discerning user.

The Digital MPA’s unique tube circ u i t ry utilizes two

12AX7A vacuum tubes and renders unsurpassed sonic

detail and clarity with the broadest range of

microphones. The 12AX7A tube preamplification section

provides gain while maintaining the incredible dynamic

range of the previous stage and controlled overload

characteristics.

The selectable tube plate voltage function delivers a

wide variety of tones. The tube circuit is differential,and

provides the equivalent of a 300V power supply on the

high voltage setting. Not to mention it has very low

distortion and noise. Our normal setting maintains

ART’s classic tube sound (warm with smooth overload

characteristics).

The Digital MPA also features Variable Input Impedance.

Variable Input Impedance is intended to optimize the

Digital MPA for the widest range of microphones.

Variation of the input impedance of a microphone

p reamplifier changes the load against which the

microphone has to push. This variation dramatically

alters the performance of a microphone, and creates

numerous sonic possibilities for microphone performance.

The variable impedance control of the Digital MPA is

infinitely variable, as opposed to steps. This allows users

much finer control over the tuning of the impedance.

Condenser microphones, ribbon microphones, dynamic

m i c r o p h o n e s – new and vintage– all become more

versatile and deliver their maximum performance when

they interact with the Digital MPA’s Variable Input

Impedance. You’ll discover that your microphones will

sound better than ever.

The Digital MPA also delivers stellar analog-to-digital

conversion. A E S / E B U, S / P D I F, TO S L I N K , and A D AT

interfaces allow connection to the broadest range of

equipment. The Digital MPA provides 24 bit or can adapt

to 16 bit applications with the push of a button. The A/D is

front panel adjustable from 44.1 to 192K or syncs to ADAT

or external word clock (32KHZ to 192KHz).

Insert jacks between the analog and digital section allow

for patching in of additional signal processing before

entering the digital realm. Separate balanced analog

outputs and multiple digital outputs possess individual

level controls’ allowing simultaneous use.

In addition to the VU meters,the Digital MPA has LED level

m e t e r i n g, w h i ch measures the left and right audio

channel levels at the A/D converter inputs. The meters

act like a normal histogram for the average signal level

and the display holds the highest LED on alone for one

second. This hold function indicates the highest peak

so the user can make sure that the A/D never clips.

While the average level function attack and release are

measured in milliseconds, the peak function has a 20

microsecond attack time. A d d i t i o n a l l y, the meter is

switchable to allow the user to monitor either the output

level or the level at the tube.

The Digital MPA’s High Pass Filter is continuously

variable from 15Hz to 150Hz. Many other preamps have a

fixed switch. This makes the Digital MPA a more

flexible processor.

The Digital MPA is designed and manufactured to the

highest standards to provide years of quiet, reliable

p e r f o rm a n c e. Whether you have an expensive

ribbon microphone, an inexpensive condenser

microphone, or a hand-held dynamic microphone, they’ll

all sound fantastic through the A RT Digital MPA

microphone pre a m p l i f i e r. The Digital MPA is truly a

m o d e rn , world-class tube microphone pre a m p l i f i e r,

and its audio performance will surely exceed your

expectations.

DIGITAL MPA

FEATURES:

✔ Variable Input Impedance For

Flexible Microphone Voicing

(150 Ohms to 3000 Ohms).

✔ Selectable Tube Plate Voltage

✔ Large VU Meters and Peak–Hold

LED Meters

✔ Metering Switchable Between

Output Level and Tube Warmth

✔ Improved Discrete Class A Input

Microphone Preamplifier

✔ Lower Noise At Low Gains, Wider

Frequency Response and Lower

THD Than Pro MPA

✔ Front Accessible Instrument

Input Jack With Very High Input

Impedance

✔ Automatically Switches To

Instrument Input When You

Plug In

Other manuals for Art DIGITAL MPA

User Guide12 pages

Questions and Answers:

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Art DIGITAL MPA Specifications

Frequency Response

frequency response at normal plate voltage	15Hz to 48 kHz (+0, -1dB)
frequency response at high plate voltage	15Hz to 120 kHz (+0, -1dB)
A/D frequency response at 44.1KHz sample rate	10Hz to 21.25KHz (+0, -1dB)
A/D frequency response at 88.2KHz sample rate	10Hz to 42.50KHz (+0, -1dB)
A/D frequency response at 196KHz sample rate	10Hz to 81KHz (+0, -1dB)

Dynamic Range and Gain