The Universal Audio 710 Twin-Finity mic preamp/DI gives you the best of tube and solid-state tones ? and even lets you blend them together! The 710 houses a Class A FET mic preamp, as well as a Class A tube pre. A Tone Blending knob lets you take the 710 from solid-state "bite" to a classic tube circuit and lets you continuously blend them to nail your signature sound. The Twin-Finity's dual gain stage controls also let you crank up the gain and add tasty vintage-style coloration to your signal.