Art DIGITAL MPA II - User Manual

DIGITAL MPA II™
ART DIGITAL MPA II™ Microphone Preamplifier
USER’S GUIDE

Summary

IMPORTANT SAFETY INSTRUCTIONS

FRONT PANEL CONNECTIONS AND CONTROLS

Input Gain control

Adjusts input signal level before tube gain, optimizing for performance.

Input Impedance control

Gain switch

Phantom switch

Enables 48V phantom power for condenser microphones and active devices.

Phase switch

Plate Voltage switch

Digital Section Front Panel Controls

Digital Level control

Controls A/D converter input levels, independent of analog output.

Sample Rate control

Sets sample rate (44.1K-192K) and dither (24/16 bit) for digital output.

Optical switch

Rear Panel Connections

Balanced Inputs

XLR connectors for mic/line with variable input impedance (150-3K Ohms).

Balanced Outputs

1/4" and XLR outputs providing low impedance driving capability.

Insert jacks

Wordclock jacks

ADAT Input

Optical output

S;PDIF output

AES;EBU output

DIGITAL MPA II OPERATING INSTRUCTIONS

Obtaining the best noise performance with the DIGITAL MPA II

Guide to setting gain stages for optimal noise floor and dynamic range.

Adjusting the Input Impedance

Tailoring mic/pre-amp interaction for desired sonic characteristics.

Obtaining the perfect digital level setting

Setting digital levels to maximize dynamic range and utilize tube saturation.

Setting the Tube Plate Voltage

Modifying tube bias/power for different sound qualities, from clean to saturated.

Using the Mid;Side mode

SERVICE

DIGITAL MPA II SPECIFICATIONS

Analog Section

Digital Section

Art DIGITAL MPA II Specifications