Connection RCA Cables
Connection RCA Cables are competition and reference-grade interconnects from Connection by Audison, built to carry clean audio signal between a head unit or processor and a car amplifier. Available in two series — the Best BT and the Sonus ST — they suit enthusiast and competition car audio builds alike, with prices from £28.99.
Both series feature double aluminium shielding for strong noise rejection. The BT series covers 2, 4 and 6-channel configurations across a range of lengths, while the Sonus ST series delivers 2-channel performance with 110% twisted Mylar construction and even higher noise rejection.

Connection RCA Cables at a glance
- Connection Best BT2 050 — 2-channel, 0.5 m, competition-grade, £28.99
- Connection Best BT2 100 — 2-channel, 1 m, competition-grade, includes remote turn-on wire, £29.99
- Connection Best BT2 250 — 2-channel, 2.5 m, competition-grade, £29.99
- Connection Best BT2 450 — 2-channel, 4.5 m, competition-grade, £29.99
- Connection Best BT2 550 — 2-channel, 5.5 m, competition-grade, £32.99
- Connection Best BT4 250 — 4-channel, 2.5 m, competition-grade, £47.00
- Connection Best BT4 550 — 4-channel, 5.5 m, competition-grade, £56.99
- Connection Best BT6 250 — 6-channel, 2.5 m, competition-grade, £57.00
- Connection Best BT6 550 — 6-channel, 5.5 m, competition-grade, includes remote turn-on wire, £72.00
- Connection Sonus ST2 050 — 2-channel, 0.5 m, reference-grade, £46.99
- Connection Sonus ST2 100 — 2-channel, 1 m, reference-grade, £56.00
- Connection Sonus ST2 250 — 2-channel, 2.5 m, reference-grade, £76.99
- Connection Sonus ST2 450 — 2-channel, 4.5 m, reference-grade, £100.00
- Connection Sonus ST2 550 — 2-channel, 5.5 m, reference-grade, £115.99
Which Connection RCA cable should I choose?
The Best BT series is the choice for a serious build on a practical budget. Double aluminium shielding and twisted pair conductors deliver over 100 dB noise rejection. Crucially, it is the only series offering 4-channel (BT4) and 6-channel (BT6) options, making it ideal for multi-channel amplifier runs. The BT2 covers the widest length range: 0.5 m, 1 m, 2.5 m, 4.5 m and 5.5 m.
The Sonus ST series steps up to reference-grade construction, combining 110% twisted Mylar with double aluminium shielding for over 115 dB noise rejection. It is 2-channel only, available in the same five lengths, and is the right choice when signal purity is the priority above all else.
Connection RCA Cables FAQs
Q: What is the difference between the Connection Best BT and Sonus ST series?
A: The Best BT series is competition-grade with double aluminium shielding and twisted pair conductors offering over 100 dB noise rejection; the Sonus ST series is reference-grade, adding 110% twisted Mylar construction and raising noise rejection to over 115 dB.
Q: Can I get a 4-channel or 6-channel Connection RCA cable?
A: Yes — the Best BT series includes 4-channel (BT4) and 6-channel (BT6) cables in 2.5 m and 5.5 m lengths; the Sonus ST series is 2-channel only.
Q: Do any Connection RCA cables include a remote turn-on wire?
A: Yes — the Connection Best BT2 100 and BT6 550 both include a built-in remote turn-on wire.
Q: What lengths are available across the Connection RCA cable range?
A: The BT2 and Sonus ST2 series are both available in 0.5 m, 1 m, 2.5 m, 4.5 m and 5.5 m; the BT4 and BT6 series are available in 2.5 m and 5.5 m.
Q: Can CEN fit Connection RCA cables in my car?
A: Yes — CEN has a fitting workshop in Beeston, Nottingham, where the team can install RCA cables as part of a car audio upgrade.
























