Stinger SI4220 6m 4000 Series 2 Channel RCA Interconnects

Stinger SI4220 4000 Series 2-Channel RCA Interconnect, 6m

Audiophile-grade 2-channel OFC RCA interconnect from the Stinger 4000 Series C3 Tech, directional twisted-pair construction, split-tip connectors. 6 metres for longer cable runs.

Product Overview

The Stinger SI4220 is the 6-metre (approximately 20ft) 2-channel version of the 4000 Series RCA interconnect range. It shares the same construction quality as the SI429 (5m version) OFC conductors, C3 Tech (Continuous Connection Construction), directional twisted-pair shielding, and split-tip connectors in a longer 6-metre length suited to larger vehicles, vans, SUVs, and utes where a 5-metre run is insufficient.

Colour-coded channel identification and compact connector ends for easy installation.

Features & Benefits

• 2-channel OFC RCA — suited to stereo or mono amplifier connections
• C3 Tech (Continuous Connection Construction) for unmatched signal transfer
• Split-tip connectors for superior contact and signal transfer
• Directional twisted-pair construction — interference rejection
• Compact connector ends with colour-coded channel identification
• 6-metre length — suited to longer vehicle cable runs

Technical Specs

Compatible With / Goes Well With

Direct Vehicle Fit:

• Universal — compatible with any car audio component with standard RCA inputs/outputs

Goes Well With:

• Stinger SK4241 / SK4681 4GA 4000 Series amplifier wiring kits
• 2-channel or mono car audio amplifiers
• Stinger STK8 8GA amplifier wiring kit (which also includes a 5m RCA — consider SI4220 for longer builds)
• Stinger 4000 Series speaker wire

Frequently Asked Questions

What is the difference between the SI4220 and the SI429?

Both are 2-channel 4000 Series OFC RCA interconnects with identical construction. The SI429 is 5 metres and the SI4220 is 6 metres. Choose the SI4220 for larger vehicles — SUVs, vans, utes, and wagons — where a 5-metre run from the head unit to the boot may fall short.

When would I need a 6-metre RCA cable over a standard 5-metre?

Cable runs of 5–6 metres are typical from the dash to the boot in a standard sedan or hatchback. In longer vehicles — utes, large SUVs, wagons, and vans — the distance from the head unit to the amplifier is often 6 metres or more. The SI4220 provides that extra margin without needing to join or extend a shorter cable.

Is the SI4220 directional?

Yes. The SI4220 uses directional twisted-pair construction and should be installed with signal flowing from the head unit to the amplifier for optimal interference rejection.

What is C3 Tech?

C3 Tech (Continuous Connection Construction) is Stinger's proprietary method ensuring the conductor maintains continuous contact with the connector body — reducing resistance and improving signal consistency.

Can I use the SI4220 for a subwoofer (mono) connection?

Yes. While the SI4220 is a 2-channel cable, one channel pair can be used for a mono subwoofer connection. Many amplifiers include a mono-sum function or a dedicated mono sub input that uses a single RCA channel.