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Universal Audio SOLO/610

Classic Tube Preamplifier & DI Box

Free Tech Support


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The All-Tube 610 Console Mic Preamp Sound in a Rugged “Go Anywhere” Design

The SOLO/610 delivers the classic Putnam 610 tube console sound in a rugged, highly versatile mic preamp design. This unit provides the silky, vintage warmth of the original console’s mic amp design, and will flatter any microphone or instrument with its signature sound. Thanks to its convenient form factor, the SOLO/610 can be conveniently used in the control room or the recording room, on stage, or on a desktop. Functionally lean but sonically mean, the SOLO/610 maintains the character of the 610 console — at a price every serious project studio can afford.

The SOLO/610 offers Mic and DI inputs, and features Gain and Level control for a wide variety of clean to colored tones. Unlike its predecessors, the SOLO/610 has continuous Gain control with even greater range, allowing for more precise gain structuring — doubling as input signal padding. The SOLO/610 has all the essential features like 48v Phantom Power, Lo-Cut filtering, Phase Reverse and flexible dual impedance selection for both Mic and DI inputs. The SOLO/610 includes essential DI features like Thru use in conjunction with an amplifier, plus Ground Lift and a versatile Mic/Line level output switch.


Classic Putnam 610 console mic preamplifier and DI

Legendary all-tube sound, at a project studio price

Gain, Level, and Impedance selection for maximum tonal variety

Portable design for studio, desktop or stage

Rugged construction-steel chassis

DI features include Thru and Mic/Line level output

Hand-built in USA; backed by 1-year limited warranty


Mic Input ImpedanceSelectable 450 ohms (Lo-Z) or 1.6 kilohms (Hi-Z)
DI Input ImpedanceSelectable 2.2 megohms (Lo-Z) or 50 kilohms (Hi-Z)
Output Load Impedance20 Hz to 20 kHz +/- 1 dB
Maximum Gain61 dB
Tube Complement(1) 12AX7, (1) 12AT7
Maximum Mic Input Level-12 dBu, 1.0% THD+N Ratio
Maximum Instrument Input Level+4 dBu, 1.0% THD+N Ratio
Maximum Gain Mic Input55 dB (1.6K ohm input), 60 dB (450 ohm input)
Mic/Instrument In Frequency Response20 Hz to 20 kHz, +/- 0.1 dB
Maximum Gain Instrument Input37 dB
DimensionsL: 14" W: 5 3/4" H: 5"
Weight9 lbs.

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