Audio Connectors - Mini TS (Tip/Sleeve - Mono - 3.5mm) - Cable End - Professional 3.5mm Mini phone plugs are available in TS (Tip/Sleeve - mono) and TRS (Tip/Ring/Sleeve - Stereo) configurations, and are used universally for balanced and unbalanced audio connections between audio equipment, and instruments. Both TS and TRS Mini plugs are available in straight, or right angle configurations.