RCA connector, male, red ring, solder lug

RCAmr - $0.83

RCA connector, female, red ring, solder lug

RCAfr - $0.72

3.5mm (1/8") stereo connector, male, solder lug

35SP - $0.88

3.5mm (1/8") stereo connector, female, solder lug

35SF - $1.95

3.5mm (1/8") mono connector, male, solder lug

35MP - $0.70

3.5mm (1/8") mono connector, female, solder lug

35MF - $1.24

2.1 x 5.5mm coaxial DC power plug, solder lug

21DCP - $1.24

RCA cables, 3 ft, shielded (pair, red and black)

These are standard audio cables, but we use them for connecting to and from project boxes and for cable extenders. If you need a male-male cable, then this is cheaper and takes less time than buying the individual RCA connectors and soldering them. And you get two cables.

RCA cables (pair) - $1.95