Universal Audio 710 Twin-Finity

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Tube/FET Preamp and DI with Tone-blending Knob, Dual Gain Stage Settings, and Discrete JFET DI Input
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Universal Audio
Mac & Win
Availability: In stock

Get tube and solid-state sonics and everything in-between with this unique mic pre/DI.

The award-winning 710 Twin-Finity™ is a radical UA micpreamp 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 ofsensibly priced solid-state and tube pre amplifiers 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

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

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

Easily track guitar, bass, or keyboards with the front panel1/4“ Hi-Z instrument input

The Ultimate in Mic Pre Flexibility

The key to the 710 Twin-Finity’s sonic flexibility lies inits innovative circuit design, featuring a solid-state trans impedance 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 trans impedance stage is controlled via the "Blend Knob" labeled "∞". 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.


Key Features

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

Dual-Path 310 volt Class-A Tube and Trans impedance 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 2.2 M 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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