Using the all-discrete SPA-690 Op-Amp, this design gives a very high-bandwidth and musical tone without a trace of sterility. Features include balanced input and output transformers, output level rotary control and 3 hi-pass filter selectable switches at 70Hz, 100Hz and 200Hz. The MPD500 has a +48VDC phantom power switch, phase reverse switch and -20dB pad switch and 12-position rotary trim adjustable at 5dB per step within the 25dB to 80dB selectable range. Also featuring a Hi-Z low level line input 1/4" phone jack for guitars, keyboards and low level instruments, the MPD500 fits standard 500 series' slot configurations both mechanically and electronically.

Input Impedance

Mic Input: Transformer balanced, 200 ohm nominal input impedance source. Actual impedance 1200 ohms broad band

Hi-Z Input: >100K

Output Impedance: 600 ohms nominal transformer balanced output

Frequency Response: +/- 0.5dB@20Hz to 50KHz

Equivalent Input Noise: -126dBm

Output Signal to Noise: -95dB

THD + Noise: +4dBu@1KHz: .015% (20Hz to 20KHz)

Maximum Output Level: +21dBm

Fits standard 500 series slot configuration mechanically and electrically