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RDL’s Rack-Up mixers are respected little install-grade workhorses: compact, quiet, and built for clean mic/line summing in fixed systems. At US$50, this looks like a strong bargain versus the recent market anchor of a US$110 median and US$50 25th percentile, especially for a lot of 2.
The upside here is straightforward: if both units are complete and functional, you’re getting a pro-audio utility piece that still sells new in the several-hundred-dollar range. The main buyer check is practical, not cynical: confirm the exact model suffix, power requirements, and that you’re getting the right accessories for the install format, because those details matter more than cosmetics on gear like this.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Pro Audio Technology, known as PRO, traces its origins to 2004 when founder Paul Hales, a veteran of QSC Audio, established Professional Home Cinema, LLC in the United States. Hales aimed to bring genuine professional-grade audio into residential spaces, revolutionizing surround sound with loudspeakers and DSP amplifiers designed for high-end home theaters. In 2010, the company rebranded to Pro Audio Technology to align with its evolving strategic vision, while retaining its core focus on installed systems.
The brand specializes in professional-style loudspeakers and DSP amplifiers/processors tailored for residential custom installations. These components emphasize scalability, precision, and integration, often forming complete systems for immersive audio. PRO later expanded through its sister company, Theory Audio Design, adapting PRO technology for broader home audio applications without venturing into consumer categories like headphones, turntables, DACs, or cables.
PRO holds a niche boutique position in the high-end market, favored by A-list celebrities from the movie and music industries, sports figures, and global leaders for their private screening rooms. Its reputation rests on delivering pro-audio performance in domestic settings, prioritizing reliability and sound quality over mass-market appeal, making it a discreet choice for discerning buyers seeking uncompromising installed systems.
See all Pro Audio Technology listings on RADAR.
