STINGER SI 6417 17FT 4 CH RCA ARMOUR AUTOMOTIVE Sale! from £41.66 Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. 6000 SERIES 17FT 4CH SHIELDED AND TWISTED RCA AMP & EQ ACC SPEAKER/SUBS/AMPS ACC Tweet