The TG12345 was installed in Abbey Road Studio Two in late 1968, making it possible for the studio to double the
number of tracks it could record simultaneously, from four to eight. The mixer had twenty-four microphone inputs and eight tape outputs, a significant increase over the eight microphone inputs and four tape outputs of the
REDD .51 mixing console that it replaced. This also enabled the studio to replace its four-track
Studer J37 multitrack tape recorder with the eight-track
3M M23. The TG12345 was Abbey Road Studios' first
solid-state mixing console and, unlike its predecessors that were based on
vacuum tubes, it featured a
compressor as well as
equalization built into each channel.
Abbey Road was recorded and mixed on that console. All members of the Beatles also recorded a solo album on it. John Lennon recorded
Plastic Ono Band, Ringo Starr recorded
Sentimental Journey, Paul McCartney recorded
McCartney, and George Harrison recorded
All Things Must Pass. Others influential albums were also recorded on the EMI TG12345, such as Pink Floyd's
The Dark Side of the Moon. The console was decommissioned in 1972 and stored dismantled in the attic of Abbey Road Studio n°3. Parts were scattered until the sound engineer Mike Hedges rescued it in 1988. Hedges worked during the following decades to reunite the original parts of the console. In 2018, Hedges contacted Malcolm Jackson of MJQ, a recording studio real-estate and used equipment broker, and Brian Gibson, former studio technician at Abbey Road Studio who worked on the console, to restore the EMI TG12345. The restoration took four years, and the console was placed for auction in October 2024. It was sold for £1,750,000. ==Hardware recreations and software emulations==