In 1949, Studer branched out into the audio business by modifying imported tape recorders from
Ampex in the
United States. By 1950, they had developed their own line of tape recorders, named the Dynavox series. Over the years, the company built a variety of 2-track recorder models for
stereo recording and
stereo mixdown. Some Studer model variations were sold under the Revox name, with slight modifications, at a lower price. The Revox variants were designed for consumer use, with features such as IR remote control and the omission of balanced input and output sockets. The core circuitry of the two was otherwise substantially identical. One of the company's models was the Revox A77 recorder, which was introduced in 1967. Studer also designed and produced
multitrack recorders. Studer's first multi-track machine, the model J37, was released in 1964. It recorded 4 tracks on one-inch tape. At
EMI Studios London (later renamed Abbey Road Studios),
The Beatles used a pair of J37s to record ''
Sgt. Pepper's Lonely Hearts Club Band'' in 1967. Later analog Studer models - the A80, A800, A827 - were built in 8-, 16-, and 24-track configurations using tape widths of up to two inches. Studer recorders quickly became standard equipment at many top studios worldwide, often paired with
Neve consoles. Some studios have continued to use Studer recorders to the present day. Sales of new analog machines continued into the early 1990s, when they began to be replaced by
digital recorders. In this period, Studer introduced the D820 and D827 multitrack models, which employed the
Digital Audio Stationary Head standard. However, digital tape formats eventually fell out of favor with the introduction of computerized
hard disk drive recording systems and DAW software products, such as
Pro Tools. A Studer A800 MKIII is the focus of the opening shot of the video for the 1988
Guns N' Roses song "
Patience". ==Mixing consoles==