Well looked after unit in perfect working order, purchased and owned since jan 2021. (note: circle sticker on channel 3 volume knob faded).

The 4-710D combines UA's classic design approach with several modern innovations - creating a unique studio device suited to a wide range of applications. At the core of the 4-710D are four channels of tone-blending ""Twin-finity"" mic preamps with true-bypass 1176-style compression. Based on the original award-winning 710 Twin-Finity preamp - favored by engineers including Al Schmitt (Jackson Browne, Dr. John, Diana Krall) and Matt Boudreau (The Samples, Sean O'Brien) - each of the four mic preamp channels allows for continuously variable tone between 100% tube and 100% solid-state.