Pre Amps / Dynamic Processors



The Solo MPA Multi-Voice Tube Preamplifier allows users to blend between a pristine low-noise/low-distortion solid-state transistor circuit and a warmer Class-A tube mic preamp.

The flexible EQ controls allow users to voice the Solo MPA to create their signature sound. Featuring 48V phantom power and a variable input impedance control, users can tailor the Solo MPA to suit their microphone of choice, be it a high-quality dynamic, a studio-grade condenser, or a low-level ribbon

The Solo Series of single-channel rackmount units have been developed for the recording enthusiast with a preference for simplicity.

Key Features


Frequency Response 15 Hz to 50 kHz (+0, -1dB)
Dynamic range  >110dB (“A” weighted) 
CMRR  >90dB THD <0.005% (typical
Equivalent Input Noise -129dBu (XLR, “A” weighted)
Maximum Input Level  +19dBu (XLR)
Maximum Instrument Input  +17dBu
Input Impedance 600-80K ohms adjustable (XLR), >800k ohms (Instrument), +27dBu (XLR) 
Output Impedance  < 47 ohms (XLR)
Maximum Gain 75dB 
Meter Calibration 0VU = +4dBu output (+4dBu mode) 0VU = -10dBV output (-10dBV mode)
Low Cut Filter  Single pole,10-200Hz adjustable 
Tilt EQ


+/- 12dB adjustable
Power Requirements  100-120V 60 Hz / 220-240V 50Hz  
Dimensions:  (HxWxD) 

1.75-inch x 19-inch x 6.0-inch 

4.45 cm x 48.3 cm x 15.2 cm

Weight  5.6 lb / 2.5kg 
Box Dimensions (HxWxD)

5” x 20.4” x 7.44”

12.6 cm x 51.8cm x 18.9cm

Note: 0 dBu = 0.775Vrms