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