The Wohler Technologies AMP-1A is a professional, self-powered stereo audio monitor engineered for critical listening applications in broadcast, post-production, and live event environments. Housed in a compact 1U rackmount chassis, it provides full-fidelity monitoring of two analog channels (one stereo pair) without the installation complexity of separate monitor speakers. The unit's unique design features four high-performance transducers driven by three power amplifiers: two amplifier/driver combinations handle midrange and high frequency information in stereo, while a third amplifier drives dual woofers for summed low frequency information below the 500 Hz crossover point.

Engineered for ultra-near field monitoring at distances of one to three feet, the AMP-1A delivers optimally focused sound with peak acoustic output of 98 dB SPL at two feet, providing operators with higher output while reducing overall ambient sound and adjacent bay crosstalk. Extended high-frequency response reveals potential issues with audio whine or hiss, while electronic bass cancellation enables positive audible detection of out-of-phase audio feeds. Front-panel controls include ganged stereo volume, balance potentiometer, and a 1/4" headphone jack that automatically mutes the speakers when in use. Extensive magnetic shielding allows placement immediately adjacent to video monitors with no color impurities, and output limiter circuits protect the integrated speakers.