Check the listing for details. Crown CT4150 4-Channel, 125 W at 4 Ohm Power Amplifier. Condition: New. Listed at 1691.70 USD. Crown®'s CT4150 is part of their ComTech DriveCore™ series. It's a 125W @ 8 Ω, 4-channel power amplifier that provides state-of-the-art technology for installed sound applications. The ComTech amplifier provides noiseless operation and small footprint with excellent quality and performance. This advanced technology is ideal for installations that require premium sound quality, multi-channel configurations, compact dimensions—and quite often—zero ambient fan noise. Representing next-generation technology available today, the ComTech DriveCore proves without a doubt that big things really do come in small packages.ApplicationsBoardroomsVideo and teleconferencingVIP suites in stadiums and arenasUpscale restaurantsRetail outletsMoreFeaturesA signal-to-noise ratio of better than 110 dBTotal harmonic distortion below 0.05% across the full audio bandwidthGreater than 70 dB crosstalkFrequency response of ±0.5 dBWeight of only 10 pounds (4.54 kg)Over 90% efficient in the DriveCore amplifier stagePower consumption of less than 1W when not in use (In Deep Sleep)Green Mode delivers power when needed. Amplifier efficiency increasesby up to 10% when compared to typical class D amplifiersSpecificationsPlease see attached documentation for product specifications