Universal Audio, from legendary studios to modern home studios

Universal Audio was born in the late 1950s from the vision of Bill Putnam Sr., one of the most influential recording engineers and producers in the history of studio sound. Based in Hollywood, he founded the United and then Western studios, where he recorded artists such as Frank Sinatra, Nat King Cole and Ray Charles, along with many other great crooners of the era. For these studios, he designed his own equipment: tube mixing consoles, preamps, compressors and dynamics processors that would go on to become benchmark tools in the professional audio world.

The 610 preamp, LA‑2A, 1176: the sound signature of major studios

Among Bill Putnam Sr.’s creations, the 610 tube preamp occupies a special place: originally designed as a console module in the late 1950s and early 1960s, it delivers warmth, harmonic richness and a very musical way of driving signals into saturation that has shaped countless classic recordings. Alongside the 610, Universal Audio (and Putnam’s related companies) also created legends like the Teletronix LA‑2A optical compressor and the 1176 FET limiter, which became standards on vocals, bass, drums and guitars. These units, both simple to operate and very musical, define what many people now refer to as the “classic American studio sound”.

The rebirth of the brand and the UAD / Apollo era

After a period of dormancy, Universal Audio was revived in the late 1990s by Bill Putnam Jr., with a dual goal: to faithfully reissue the great analog classics (LA‑2A, 1176, 610, etc.) and to offer their counterparts as plug‑ins via the UAD platform. Over time, the range expanded with Apollo interfaces, UAD DSP cards and, more recently, Volt USB‑C interfaces, giving home‑studio users access both to excellent audio conversion and to official emulations of the hardware that made the brand famous. In this way, Universal Audio has become a bridge between the heritage of large analog studios and the needs of today’s producers and creators, in both hardware and software form.

SOLO/610: the sound of the 610 console in a portable preamp

The Universal Audio SOLO/610 brings the original 610 tube preamp topology into a compact format designed for project studios and mobile recording. It combines a mic input and an instrument DI input, with Gain and Level controls that let you dial in anything from very clean tones to thicker, saturated colours typical of vintage Universal Audio consoles. It offers all the features you would expect from a professional preamp: 48 V phantom power, low‑cut filter, phase inversion, selectable mic and instrument impedance, mic/line output and a Thru output for the DI. Rugged, portable and very musical, the SOLO/610 puts the signature sound heard on so many classic Universal Audio recordings onto a single channel, right in a home‑studio setup or live rig.