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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.
Features
# Twin-Finity(TM) 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
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 "()()". 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 is designed and built at UA headquarters in California, and includes a 19" rack-kit for mounting one or two units.
Specifications
Inputs:
- Microphone (Female XLR)
- Balanced: Line (Female XLR)
- Unbalanced: Instrument (1/4 inch 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 (WxHxD): 8.45 x 3.5 x 10.25 in.
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
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 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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