Universal Audio Apollo Solo USB Audio Interface

The Universal Audio Apollo Solo USB is a desktop 2 x 4 audio interface built specifically for Windows-based recording environments. At its core are two Unison mic preamps, which go beyond conventional gain staging by integrating UAD preamp emulations directly into the hardware's input circuitry. This means when you load a classic preamp model, the Apollo Solo physically adjusts its impedance and gain structure to mirror the original hardware, delivering an authenticity that software-only emulations cannot match.

Powering the real-time effects processing is a UAD-2 SOLO chip, which offloads plug-in computation from your computer's CPU entirely. This allows you to track through reverbs, compressors, and channel strips with near-zero latency — a significant advantage for vocalists and musicians who need polished monitor mixes while recording. The interface connects via USB and provides four outputs for flexible monitoring configurations. While the single SOLO processor does impose a ceiling on how many UAD plug-ins you can run simultaneously, it delivers a genuine taste of Universal Audio's acclaimed processing ecosystem at an accessible entry point for home and project studios.