Universal Audio 710 Twin-Finity Hybrid Tube/Solid State Microphone/Line Preamplifier and DI


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Dale #:UNAU-710TF

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  • The 710 Twin-Finity™ is a radically new UA pre-amp design which uniquely combines both the classic retro warmth of UA tube design and the transient bite of solid-state in a 2U, half-rack, all-metal chassis. The 710 was created specifically to add the tonal versatility and sonic inspiration 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.

    • 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, Optional Desktop Handle Kit also available
    • 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, Designed and Made in the USA

    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.

  • Inputs
    Microphone Female XLR
    Balanced Line Female XLR
    Unbalanced Instrument 1/4 jack
    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
    Mic Input Impedance 2K ohms
    Line Input Impedance 10K ohms
    Hi-Z Input Impedance 2.2M ohms
    Internal Output Impedance 600 ohms
    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 @ +4dB U0.1% tube 0.005% solid-state
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