Sound Pure's Take
The Universal Audio 710 was already a contender in its price range the Revival mods make it a champion and irresistable at used prices.
According to Revival this unit has had a full audio path upgrade with the components tuned for more musicality, as well as better headroom, bandwidth, detail, frequency response, and signal to noise. The tube has also been replaced and the power supply redesigned. All amps have been replaced with Burr Brown High Performance amps.
From Universal Audio
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 "∞". 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
- 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
- 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
- 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 Solid-State: +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
- Distortion: Min THD+Noise @ +4dBU, 0.1% tube 0.005% solid-state
Warranty
This item is sold without the Sound Pure 3-year warranty (used / B-stock / dealer-exempt). Coverage terms for items in this category live in Terms & Conditions, Section 27.
Returns
Try Before You Buy: 48-hour audition. Program details →
You may also like
Browse Single-channel Mic Preamps →
Sound Pure Studios · Durham, NC
Come hear it in our control rooms.
Sound Pure is a working studio in Durham, NC — a 1,000 sq ft live room and two pro control rooms. Book a session to audition gear in a world-class acoustic space before you buy.