Universal Audio 710 Twin-Finity Mic Pre & DI Box

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100% tube to 100% solid state, a variable tone blending mic preamp & DI.

The award-winning 710 Twin-Finity is a radically new 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 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.

The key to its 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 "ˆž". 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.

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.

Versatility makes the 710 the perfect preamp partner for any mic collection. Plus, the discrete JFET DI input circuit can also easily handle any electric instrument. Guitar and bass players will especially appreciate the 710s ability to bring out the best of both active and passive pickups. The 710 Twin-Finity includes a 19" rack-kit for mounting one or two units.

Features
  • 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
  • 70dB+ of gain, +48V Phantom, Pad(-15dB), Phase Invert, and Low Cut Filter(75Hz)
  • 19" Rack kit included, optional desktop handle kit also available
  • Heavy-duty metal construction
 

710 Twin-Finity Mic Pre & DI Box Specifications:

  • Inputs
    Microphone (Female XLR)
    Balanced Line (Female XLR)
    Unbalanced Instrument (1/4" jack) (D.I.)

    Outputs
    Balanced Line (Male XLR)

    Type
    Tube & Solid-State Phase-Aligned Tone-Blending Mic Pre & DI

    Tube Complement
    12ax7

    Pad
    -15dB

    High Pass Filter
    75Hz

    Maximum Power Consumption
    160mA @120VAC
    20W

    Power Requirements
    100-240VAC

    Dimensions
    8.45W x 3.5H x 10.25D
    Weight
    5.25 lb

    Impedance:
    Mic Input Impedance
    2K ohms
    Line Input Impedance
    10K ohms
    Hi-Z Input Impedance
    2.2M ohms

    Internal Output Impedance
    600 ohms

    Gain/Levels:
    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

    Maximum Mic Input Level Gain @min SS
    +18 dBu
    Maximum Mic Input Level Gain @min Tube 1% THD
    -7 dBu dBu +8 dBu w/pad
    Maximum Line Input Level Gain @ Min SS
    +30
    Maximum Line Input Level Gain @ Min Tube 1% THD
    +8 dBu
    Maximum Hi-Z Input Level Gain Min SS
    +18
    Maximum Hi-Z Input Level Gain Min Tube 1% THD
    +8 dBu
    Maximum Output Level into 600 ohms
    +18 dBu
    Maximum Output Level into 100k ohms
    +28 dBu
    Tube Clipping Level
    Same as Max In
    Solid-State Clipping Level
    Same as Max In

    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

    Distortion
    Min THD+Noise @ +4dBU
    0.1% tube 0.005% solid-state
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by PowerReviews
Universal Audio710 Twin-Finity Mic Pre & DI Box
 
5.0

(based on 1 review)

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(3 of 5 customers found this review helpful)

 
5.0

AMAZING PRE

By 

from Orlando, FL

Comments about Universal Audio 710 Twin-Finity Mic Pre & DI Box:

I heard this preamp tested up next to a bunch of other common preamps recording an acoustic guitar including a Neve Portico, Chandler Geranium, and about Twenty others. Although sound is a very suggestive thing, I describe it as having a lot of bite with an upper medium amount of fullness. This is a product of top notch quality and the versatility from the tube/solid state blend feature adds value but, it looks like they borrowed that design concept from the Summit Audio 2BA-221. I'd love to hear those two compared!

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