TRS (known as a Tip, Ring, and Sleeve) are available in three standard sizes. These are 1/4 inch (6.35mm), 3.5mm, and 2.5mm. All three cables are readily available in two-conductor (unbalanced mono) and three-conductor (balanced mono or unbalanced stereo) versions. 3.5mm TRS cables are used for a number of consumer electronic applications that transmit an audio signal (i.e. for ear/headphones). 1/4 inch TRS cables are commonly used to connect electrical instruments to amplifiers and/or monitor speakers.
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| Three-conductor TRS |
Digital Cables
ADAT Optical Uses a Toslink connector to carry up to 8 channels of audio.
AES/EBU (Audio Engineering Society European Broadcasting Union).
Firewire Commonly found on audio interfaces and portable recording devices.
RCA Coaxial
SPDIF (Sony Philips Digital Interface).
TDIF (Tascam Digital Interface).
Toslink
USB (Universal Seriel Bus). 1.1 2.0 & 3.0
