Universal Audio

Product Code: UA-710

Universal Audio 710 Twin-Finity Mic Preamp & D.I.

The 710 Twin-Finity combines the classic retro warmth of UA tube design with the transient bite of solid-state.  The 710 was designed specifically to add the tonal versatility and sonic inspiration that's missing from generic audio interface preamps.  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.

    • Universal Audio 710 Twin-Finity PRODUCT FEATURES:

      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 "∞". 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.

      * 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
    • Universal Audio 710 Twin-Finity TECHNICAL SPECIFICATIONS:


      Microphone (Female XLR)
      Balanced Line (Female XLR)
      Unbalanced Instrument (1/4" jack) (D.I.)
      Balanced Line (Male XLR)
      Tube & Solid-State Phase-Aligned Tone-Blending Mic Pre & DI
      Tube Complement
      High Pass Filter
      Maximum Power Consumption
      160mA @120VAC
      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
      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
      Maximum Line Input Level Gain @ Min Tube 1% THD
      +8 dBu
      Maximum Hi-Z Input Level Gain Min SS
      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


      Min THD+Noise @ +4dBU
      0.1% tube 0.005% solid-state
Need more info on the Universal Audio 710 Twin-Finity? Click HERE for the manufacturer's website >>>
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