Tube and transistor circuitry

The ART SOLO MPA is a preamplifier with a flexible, warm Class A tube circuit and a low-noise, low-distortion transistor circuit. Which circuit is used is set via the VOICE control. This and all other controls on the front of the SOLO MPA are stepped and therefore perfect for easy recall. The device also has a variable input impedance, which can be adjusted between 600Ω and 80kΩ depending on the application. The SOLO MPA also has the tilt EQ function, which can be used to emphasize a high presence or a warm bass range in the audio signal, while the low cut filter ensures that low frequencies are filtered out.

The device also features an illuminated VU meter, a Hi-Z instrument input (6.35 mm jack socket) with high impedance on the front panel, an output level selector switch as well as a switch for phase inversion and switchable 48V phantom power for the use of certain microphone types.

The connections of the SOLO MPA are located on the rear panel. The input and output have each been given a three-pin XLR and a 6.35 mm jack connection. As it is a 1-channel Preamp , only one socket from the input and one from the Output can be used at any one time.