710 Twin-Finity Single-Channel Mic Pre

Universal Audio 710 Twin-Finity Single-Channel Mic Pre
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Universal Audio
Mac & Win
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The award-winning 710 Twin-Finity™ is a radical UA mic preamp design that combines both the classic retro warmth of tubes with the transient bite of solid-state, all in a 2U, half-rack unit. The 710 was created specifically to add the tonal versatility and sonic inspiration missing from generic audio interface preamps.


Tone blending is continually variable between 100% tube and 100% solid-state, offering a practically infinite range of unique preamp tones, plus the ability to easily dial-in your own signature sound. There are lots of sensibly priced solid-state and tube preamplifiers out there, but the 710 Twin-Finity is the only one that offers the best of both worlds — as well as everything in-between — all in one box, and within reach of any serious project studio’s budget. Includes a 19" rack-kit for mounting one or two units.


Harness the distinct sonic properties of tubes and solid-state in one unique preamp/DI

Blend between tube and solid-state sounds for myriad textures and tones

Unlock the potential of your mic locker with a powerfully versatile preamp

Easily track guitar, bass, or keyboards with the front panel 1/4“ Hi-Z instrument input

The Ultimate in Mic Pre Flexibility

The key to the 710 Twin-Finity’s sonic flexibility lies in its innovative circuit design, featuring a solid-state transimpedance input amp simultaneously driving separate, phase-aligned tube and solid-state gain stages, which are then summed to a single output. The mix between the 310 volt single-ended class-A triode tube stage and solid-state transimpedance stage is controlled via the "Blend Knob" labeled "‚àû". Blending is continually variable between 100% tube and 100% solid-state offering a practically infinite range of unique pre-amp tones and the ability to easily dial-in your own signature sound.

Drive for Days

Like all our other preamp designs, the 710 features dual gain-stage controls (Gain/Level) which can radically vary the amount of coloration and distortion by allowing you to crank up the input gain like a guitar amp. The VU meter features a unique "Drive" mode allowing you to see how hard you are driving the input stage.

Twin-Finity™ Tone-Blending Mic/Line Preamp & Hi-Z Instrument DI

Dual-Path 310 volt Class-A Tube and Transimpedance Solid State Preamp

Phase-Aligned "Tone-Blending" of Tube and Solid State

Dual Gain Stages: Wire with Gain to Creamy to Crunchy

Discrete JFET DI with 2.2M ohm Ultra Hi-Z impedance

Monolithic Balanced Output Stage

70dB+ of gain, +48V Phantom, Pad(-15dB), Phase Invert, and Low Cut Filter(75Hz)

Output and "Drive" backlit VU metering

Portable, Rack-Mountable design for Studio, Desktop or Stage

19” Rack Kit Included

Front Panel Hi-Z Input (switched from Mic/Line automatically via Jack Detect)

Rear Panel XLR Mic Input, XLR Line Input and XLR Line Output

Universal Internal Power Supply

Heavy-Duty Metal Construction


Microphone (Female XLR)

Balanced Line (Female XLR)

Unbalanced Instrument (1/4" jack) (D.I.)


Balanced Line (Male XLR)

Tube Complement




High Pass Filter


Maximum Power Consumption

160mA @120VAC, 20W

Power Requirements



8.45W x 3.5H x 10.25D


5.25 lb


Mic Input Impedance

2K ohms

Line Input Impedance

10K ohms

Hi-Z Input Impedance

2.2M ohms

Internal Output Impedance

600 ohms


Gain Range for Unit

-Infinity to 70dBu

Mic Range Gain Pot

10 ~ 60 dBu

Line Range Gain Pot

-10 ~ 40 dBu

Hi-Z Range Gain Pot

-10 ~ 40 dBu

Frequency Response

Mic Frequency Response

20Hz to 100kHz +/- 0.2 dBu

Line Frequency Response

20Hz to 100kHz +/- 0.2 dBu

Hi-Z Frequency Response

20Hz to 100kHz +/- 0.2 dBu


Min THD+Noise @ +4dBU

0.1% tube 0.005% solid-state

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