Can�t decide whether your next preamp should offer the warmth of tubes or the headroom of solid-state? Universal Audio�s new 710 Twin-Finity "tone-blending" tube and solid-state preamp/DI ($999) offers both types of signal path. The single-channel, half-rack 710 is targeted at DAW users and boasts class A circuitry and two independent signal paths, which can be mixed or used independently. The 710�s unique tone blending control is continuously variable between 100% tube (12AX7A) and 100% solid-state. An optional kit lets you mount a pair in a rack.