Yes. The T4S/T8S is available for purchase separately or may be used with an L1 Model 1S/II system, S1 Pro or F1 System. When the T4S/T8S is fused with one of the products, the ToneMatch settings are optimised for the loudspeaker. The T4S/T8S can be connected along any number of amplifiers or loudspeakers. A power supply is required to run the mixer, which is available through Bose or authorised dealers of Bose products.