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Designed and tuned in the Turkey, Sti Professional’s Z12A boasts an all-new1200-watt peak (600-watt continuous) amplifier, a significant advance over the 1100-watt peak (550-watt continuous) amplifiers in its Z12 Series predecessor. With a reimagined 12-inch low-frequency driver fused with a new 2-inch horn-loaded high-frequency driver with a precision waveguide, Z12A has been painstakingly designed to play louder, handle more power and produce a level of clarity at higher SPLs that defies belief. With an extended-range frequency response and exceptional heat dissipation for impressive power-handling, plus thermal and transducer overdrive protection, Z12A guarantees to withstand the rigours of the road and secures your peace-of-mind, even at all-night-long concert levels.

Designed and tuned in the Turkey, Sti Professional’s Z15A boasts an all-new1600-watt peak (800-watt continuous) amplifier, a significant advance over the 1550-watt peak (750-watt continuous) amplifiers in its Z15 Series predecessor. With a reimagined 15-inch low-frequency driver fused with a new 2-inch horn-loaded high-frequency driver with a precision waveguide, Z15A has been painstakingly designed to play louder, handle more power and produce a level of clarity at higher SPLs that defies belief. With an extended-range frequency response and exceptional heat dissipation for impressive power-handling, plus thermal and transducer overdrive protection, Z15A guarantees to withstand the rigours of the road and secures your peace-of-mind, even at all-night-long concert levels.