Universal Audio 710 Twin-Finity Microphone/Line Preamplifier

Unlock the potential of your mic locker with a powerfully versatile preamp

Easily track guitar, bass, or keyboards with the front panel 1/4“ Hi-Z instrument input

The Ultimate in Mic Pre Flexibility

The key to the 710 Twin-Finity’s 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.

Drive for Days

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.

Key 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
• 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
  
  

Specifications

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