DS18 HQRCA2F1MKIT 2 Female to 1 Male Dual Twist RCA 1x Red 1x Black Kit Your signal to your amplifiers is one very important part of your system. These cables carry your music signal to your amplifiers and the better the construction of the RCA, the more precise and better the signal is. Your choice of RCA can effect volume, noise, and overall performance of your amplifier and system all together