ART Single Channel Microphone preamp with Variable input impedance, multivoice tube, flexible mic voicing, 

Overview

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

• Adjustable input impedance (600 to 80K ohms)
• Flexible Tilt EQ  
• Tunable Lowcut Filter  
• Variable Voice Tube/Solid State Control  
• Front accessible meter trim  
• Discrete class A FET input microphone preamplifier   
• Low THD  
• Wide frequency response  
• Front mounted Instrument/DI Input  
• Very high input impedance 
•  +4dBu/-10dBV output level selection

From the Sound On Sound review:

"The Solo MPA is a mic preamp that also features a front-panel instrument input, and allows users to blend seamlessly between solid-state and valve signal paths. There’s 75dB of gain available, and the unit is also equipped with an adjustable impedance control that can be set to values between 600Ω – 80kΩ for the XLR input (the instrument input is fixed at >800kΩ). Further tone shaping is provided by an onboard ±12dB tilt EQ and switchable 10 – 200 Hz high-pass filter, and a set of three buttons offer a +20dB gain boost, polarity reversal and phantom power."

Specifications

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