Universal Audio 710 Twin-Finity Mic Preamp / DI BoxUncategorized / By Alexander / February 22, 2018 91 GEARANK 91 out of 100. Incorporating 175+ ratings and reviews. Street Price: $999.00 Manufacturer: Universal Audio Features: Single Channel Mic Preamp Dual Gain Stges – Tube/Solid State Tone Blending Discrete JFET DI Hi-Z Instrument DI