High Fidelity Audio Mono Cable, Bi-Metal conductors (Copper & Silver), triple shielding, mono block Twist Lock® plugs, 1 RCA (Cinch) right, 1 RCA (Cinch) bent at 90°, gold contact, hand silver soldering. The Real Cable SUB 1801 uses a Bi-metal (copper/silver) core with multi-section strands (TDC: Time Difference Control). The transit time of the different low frequencies is constant. Real improvement of information and excellent dynamics.