

Connection Sonus ST2 250 2.5m 8.2ft 2 Channel Car RCA Amp Cable Lead
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The Connection Sonus ST2 250 is a 2.5 m (8.2 ft) 2-channel RCA interconnect cable from the Reference Grade ST series by Connection (by Audison). It connects your head unit to your amplifier with 110% twisted Mylar and double aluminium shielding and over 115 dB noise rejection.
This listing is the ST2 250 (2.5 m). The Sonus ST2 is also available in ST2 050 (0.5 m), ST2 100 (1 m), ST2 450 (4.5 m), and ST2 550 (5.5 m).
Key specifications
- Model: Connection Sonus ST2 250
- Length: 2.5 m / 8.2 ft
- Channels: 2
- Shielding: 110% twisted Mylar and double aluminium
- Noise rejection: over 115 dB
- Conductors: WTP (Winding Twisted Pair) balanced, DDW (Double Drain Wire)
- Connectors: platinum satin machined ABS-style RCA
- Performance rating: Reference Grade
ST2 250
A 2.5 m (8.2 ft) 2-channel RCA interconnect built to Reference Grade standard for clean, noise-free signal between your head unit and amplifier.
Connection by Audison: ST series high resolution audiophile signal cables
- DURA-TEX outer jacket for protection, improved feel and flexibility.
- SOFT TOUCH outer jacket for an extremely flexible, easy-to-route cable.
- 110% twisted Mylar and double aluminium shield rejects RFI and EMI.
- DDW (Double Drain Wire) system for noise-free transmission.
- WTP (Winding Twisted Pair) balanced conductors reject low-frequency electromagnetic fields.
- Over 115 dB noise rejection.
- Platinum satin machined ABS-style connector for a strong, long-lasting connection.
- Tug-proof sealed internal connection for maximum reliability.
- Die-cast Y block protects conductors at the critical split point.
- Reference Grade performance.
Explore the full range in Connection RCA Cables.
Specification
| Type | Wiring |
|---|---|
| Series | Sonus |
| Article Number | ST2 250 |
| Country of Manufacture | China |
More specs
| |
What's Included
- Sonus ST2 250 2,5 m/8.2 ft.
Connection
About the Connection ST2 250
From our tech experts at CEN
The Connection Sonus ST2 250 is a 2.5m (8.2ft) 2-channel RCA interconnect from the Reference Grade Sonus ST series by Connection, a brand by Audison. It connects a head unit to an amplifier using 110% twisted Mylar and double aluminium shielding, with over 115 dB noise rejection. WTP balanced conductors and a DDW double drain wire system keep the signal free from RFI and EMI.
Who it suits
This cable suits most amplifier installs in a saloon or hatchback, where 2.5m comfortably covers the boot run. Those with a longer cable path can step up to the ST2 450 (4.5m).
Our tech experts advise
Route the cable away from power leads to make the most of its shielding. The SOFT TOUCH jacket threads easily through tight interior panels. Platinum satin machined connectors give a solid, reliable fit on head unit and amplifier RCA sockets. Fitting prices vary by vehicle — see our car audio installation page for details.
Explore the full Connection range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Connection
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Frequently Asked Questions
Q: How long is the ST2 250?
A: The ST2 250 is 2.5 m (8.2 ft) long.
Q: How many channels does the ST2 250 carry?
A: Two channels, so one cable carries a stereo left and right signal.
Q: How well is the ST2 250 shielded against interference?
A: It uses a 110% twisted Mylar and double aluminium shield to reject RFI and EMI, a Double Drain Wire system and Winding Twisted Pair balanced conductors, for over 115 dB noise rejection.


























