The ART MPA Gold features pure Class-A design using two discrete 12AX7A vacuum tubes to deliver controlled ‘musical sounding’ overload characteristics for added warmth and presence, while maintaining an incredible dynamic range with unsurpassed sonic detail and clarity.
Variable Input Impedance is intended to optimise the inputs for the widest possible range of microphone sources. The ability to vary the input impedance of a microphone preamplifier changes the load the microphone ‘sees’ in the system, dramatically altering its performance and sonic character. This creates a wide range of new sonic possibilities with any modern or vintage condenser, ribbon or dynamic microphone.
The variable impedance control is infinitely variable allowing much finer control and the ability to tune the preamp to the microphone’s ideal sweet spot. A continuously variable 15 to 150Hz High Pass Filter at the input increases control of the microphone source.
The selectable Tube Plate Voltage function delivers a wide variety of tone from the ART MPA Gold’s preamplifier section. The tube circuit is differential and provides the equivalent of a 300V power supply on the high voltage setting ensuring maximum output with extremely low noise and distortion.
The meters act like a normal histogram for the average signal level and the display holds the highest LED on alone for one second. While the average level function attack and release are measured in milliseconds, the peak function has a 20-microsecond attack time.
Insert jacks between the analogue tube section and the output allow patching of additional analogue signal processors such as compressors or EQ’s to be introduced to the signal path before digital conversion and output.
Separate balanced analogue outputs and multiple digital I/O all offer individual level controls allowing simultaneous use. Additional high-Z 1/4-inch inputs make the ART MPA Gold the perfect high-quality DI in studio or high-profile live applications.
Features
- Variable Input Impedance (150 ohms to 2400 ohms)
- Selectable plate voltage
- Large highly visible VU meters
- Discrete high-performance Class-A dual tube input circuitry
- Low total harmonic distortion
- Wide frequency response
