ATI AT542NC Stereo Power Amplifier

The ATI AT542NC Stereo Power Amplifier is part of the AT500NC Series of high performance amplifiers. The AT542NC is also available in a three and four channel configuration and features Hypex N-Core Class D output amplifier modules, with ATI designed input buffers and linear power supplies.

The AT542NC amplifier breaks new ground in other ways. It is one of the first ATI amplifiers to use micro-processor control for turn-on delay and feature automatic AC power recognition and configuration. The ‘500NC’ series of amplifiers not only recognize whether they are hooked up to 117V or 230V nominal power, they automatically self-configure. The amplifiers also incorporate a new and novel “sleep” circuit. When the amplifier receives no input signal for a period of 10 minutes, power is removed from the output modules and a front-panel LED begins to flash. As soon as an input signal is detected on any channel, normal playback operation resumes instantaneously.

Distortion is rated below 0.05% and signal-to-noise ratio of 123 dB (minimum, referenced to rated output), each amplifier in the series is capable of playing back the full dynamic range available on today’s lossless recordings.

All ATI amplifiers are available in standard (17”) and rack-mount (19”) chassis and are covered by ATI’s 7-year transferrable warranty.

Amplifier Technologies owns the ATI, Audioaccess, B&K, BGW and Theta Digital brands and designs and manufactures state-of-the-art audio components for its own and other brands in its facility in Montebello, CA. Guided by legendary amplifier designer Morris Kessler, ATI offers both performance and value in audio components.

Technical Specifications

EIA 1kHz Output Power at 8Ω – 650 watts
EIA 1kHz Output Power at 4Ω – 1000 watts
FTC Full Bandwidth Output Power at 8Ω – 500 watts
FTC Full Bandwidth Output Power at 4Ω – 900 watts
Input Sensitivity for Full Rated Output – 2.5 volts
Frequency Response – -/+ 0db 20-20kHz
Phase Response – +15 degrees to -15 degrees, 20Hz-20kHz at 1 watt
Signal-to-Noise Ratio “A-Weighted” – >123db
Total Harmonic Distortion (20Hz—20kHz) – <0.02%
Intermodulation Distortions (IMD) – <0.03%
Load Impedance – Safe with all types of loads. Rate for 4-16 Ohms
Power Bandwidth FTC – +0,-3db 20-40kHz
Damping Factor – >5000
Input Impedance – 47k Ohms
DC Output Offset – Less than -/+ 10mV
Chassis Dimensions (W x H x D) 432 x 146 x 270mm
Net Weight 17.8kg
Shipping weight 22.3kg