Crest Audio has announced the ProTour Series of class-D power amplifiers, targeting ‘the most demanding requirements of portable and fixed installation audio systems’.

Crest Audio ProTourComprising ProTour 8004d 4-channel amplifier with 2000w/channel into 4Ω or 70/100V direct drive; ProTour 5002d 2-channel amplifier with 2.5kW/channel into 4Ω; ProTour 4004d 4-channel amplifier with 1kW/channel into 4Ω; and ProTour 3003d 3-channel amplifier with 1kW/channel into 4Ω or 70/100V direct drive, the series delivers high output power, efficient cooling, onboard DSP, Dante network connectivity, and USB/Ethernet connectivity for monitoring and control.

All models incorporate a highly efficient switch mode power supply and class-D circuitry with full-bandwidth PWM modulators for ultra-low distortion, high efficiency and circuit protection. The clip/limiter function provides output monitoring to prevent speaker damage with gentle gain reduction at clip threshold as well as efficient heat dissipation and overheat protection for uncompromised reliability.

ProTour Series amplifiers also use powerful internal DSP with sampling rates of 96kHz, 24 bits, and high-performance 24bit AD/DA converters, and provide IIR HP/LP crossover filters, RMS compressor, parametric EQ, alignment delays and white/pink noise.

Users can set parameters, select input source and load presets via the convenient front panel LCD touchscreen. A Dante network module enables primary and redundant connectivity to a digital audio network and allows external control and monitoring of the amplifier.


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