Art DIGITAL MPA II Operation & User’s Manual

5, 2 The signal path of the DIGITAL MPA II consists of a discrete class A microphone pre-amp followed by a Low Cut Filter, a balanced differential tube circuit with a 20dB Gain switch and then the phase switch. At this point the signal passes to both the analog output and the Insert ja…

21, 18 WARRANTY INFORMATION Limited Warranty Applied Research and Technology will provide warranty and service for this unit in accordance with the following warrants: Applied Research and Technology (A R T) warrants to the original purchaser that this product and the components…

23, 20 DIGITAL MPA II SPECIFICATIONS 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”…

14, 11 Rear Panel connections Figure 4 – Rear connections Balanced Inputs The DIGITAL MPA II’s XLR connectors follow the AES standard of Pin 1 = Ground, Pin 2 = Hot (+), Pin 3 = Cold (-). The Balanced inputs have an input impedance that is variable from 150 to 3K Ohms via the front p…

6, Art DIGITAL MPA II 3 FRONT PANEL CONNECTIONS AND CONTROLS Figure 2 – Front controls Input Gain control This control optimizes the input signal level before the tube gain is applied. Both Microphone and Instrument input gains remain the same and are affected by this adjustment. Input gain c…

16, 13 Using the optical output in S/PDIF is recommended over the coax output, as it is the most robust and reliable of all the digital outputs. S/PDIF output The S/PDIF coax connector allows the DIGITAL MPA II to connect to a wide range of consumer and professional equipment. T…