Preamps

The 710 Twin-Finity Universal Audio is a microphone preamp/DI box that subtly combines the warmth of tubes and the bite of transistors. The 710 has a dual gain stage control (gain/level) that can vary the amount of coloration and distortion completely, allowing you to push the input gain like on a guitar amp. The VU meter features a unique “Drive” mode to see how well you are driving the input stage. You can easily record guitars, basses or keyboards with the instrument input on the high impedance 6.35 mm jack (Hi-Z) on the front panel, and mix tube and transistor sounds for a multitude of textures and tones .

ARTICLE N° 58439
  • Universal Audio 710 Twin-Finity Microphone preamp/DI box that subtly combines the warmth of tubes and the bite of transistors.
  • Twin-Finity™, sound color mixing function (solid-state/tube), mic/line preamp and high-impedance direct input for instruments.
  • Dual signal path preamplifier: Class A tube sound with 310 Volt voltage and solid-state trans-impedance preamplifier.
  • Phase-aligned variable mix between tube and solid-state sounds.
  • Double gain adjustment: From bright to saturated.
  • Discrete direct input to ultra high impedance 2.2M Ohm JFET.
  • Monolithic balanced output stage.
  • Gain greater than 70 dB, 48 V phantom power, input attenuator (-15 dB), phase inversion, and high-pass filter (75 Hz).
  • “Drive” saturation level and output level meter.
  • Portable, Rack-mountable format perfect for the studio, for use on a table or on stage.
  • 19-inch Rack mounting kit provided, optional table mounting handles.
  • High impedance input on the front panel (automatic switching with microphone/line input by detection of insertion into the input jack).
  • XLR microphone input, XLR line and XLR line output on the rear panel.
  • Universal voltage switching power supply.
  • High strength metal housing.
  • Designed and manufactured in the USA.
  • Inputs: Microphone (XLR female).
  • Balanced line (female XLR).
  • Unbalanced instrument (6.35 mm jack) (direct input).
  • Outputs: Balanced line (male XLR).
  • Variable mix of tube and semiconductor sound aligned in phase on the mic and direct inputs.
  • Lamp: 12ax7.
  • Attenuator: 15 dB.
  • High pass filter: 75 Hz.
  • Maximum power consumption: 160 mA at 120 Vac, 20 W.
  • Mains supply: 100-240 Vac.
  • Dimensions: 214mm (w) x 89mm (h) x 260mm (d).
  • Weight: 2.4 kg.
  • Impedances
  • Microphone input: 2 kOhm.
  • Line input: 10 kOhm.
  • High impedance input: 2.2M Ohm.
  • Internal output impedance: 600 Ohm.
  • Gain/Levels
  • Gain range: -Infinity at 70 dBu.
  • Mic potentiometer gain range: 10 ~ 60 dBu.
  • Line potentiometer gain range: -10 ~ 40 dBu.
  • Hi-Z potentiometer gain range: -10 ~ 40 dBu.
  • Maximum microphone input gain with SS at minimum: +18 dBu.
  • Maximum microphone input gain with Tube harmonic distortion 1% max.: -7 dBu dBu +8 dBu with attenuator activated.
  • Maximum line input gain with SS at minimum: +30 dBu.
  • Maximum line input gain with Tube harmonic distortion 1% max.: +8 dBu.
  • Maximum high impedance input gain with SS at minimum: +18 dBu.
  • Maximum high impedance input gain with Tube harmonic distortion 1% max.: +8 dBu.
  • Maximum output level in 600 Ohm: +18 dBu.
  • Maximum output level in 100 kOhm: +28 dBu.
  • Tube section clipping level: Same as max input level.
  • Solid-state section clipping level: Same as max input level.
  • Frequency response:
  • Mic: 20 Hz to 100 kHz +/ 0.2 dBu
  • Line: 20 Hz to 100 kHz +/ 0.2 dBu
  • High impedance input: 20 Hz to 100 kHz +/ 0.2 dBu
  • Total harmonic distortion + minimum noise at +4 dBu: 0.1%, tube section; 0.005%, solid state section.
The key to the 710 Twin-Finity's sonic flexibility lies in its innovative circuit design, which features a transistor transimpedance input amp operating simultaneously - and in phase! - the tube and transistor gain stages, the summation of which is then sent to a single output. The mixing between the 310 volt single-ended triode class A stage and the transistor transimpedance stage is controlled using the “∞” potentiometer. The mix is ​​infinitely adjustable from 100% tube to 100% solid-state, offering a virtually endless array of unique preamp sounds, and the ability to easily dial in your own signature sound.

The tone mix is ​​infinitely adjustable from 100% tube to 100% solid-state, offering a virtually endless array of unique preamp sounds, with the ability to easily dial in your own signature sound. There are plenty of reasonably priced tube and solid-state preamplifiers out there, but the 710 Twin-Finity is the only one that offers the best of both worlds – and everything in between – in one package, and within the budget of any serious studio project. Includes 19-inch rack-mount kit for one or two units.

The 710 was specifically created to provide the tonal versatility and sonic inspiration that generic audio interface preamps lack.
Canals
 1
Integrated AN/NA converter
 No
Compressor / limiter
 No
Phantom power
 Yes
Power supply
 Mains powered
De-esser
 No
Phase opposition
 Yes
Micro input
 1
Instrument input
 Yes
Audio outputs
 XLR
Vu-meter
 Yes
Analog input
 3

Spotlight on

For over 50 years, Universal Audio has been an industry leader in DSP audio modeling and vintage analog technology. The American manufacturer has released groundbreaking products such as the LA-2A compressor and the 610 tube mic preamp which have been used to record artists as diverse as the Beach Boys and Van Halen. 
Since the 2000s, Universal Audio has been faithfully reproducing classic analog recording equipment and designing new digital recording tools in keeping with the sound and spirit of vintage analog technology. Best-sellers include the Apollo interface, UAD-2 Satellite, UAD plug-ins, UADFX pedals and the OX Amp Top Box.