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US$20 is a strong bargain here, well below the US$50 25th percentile and far under the US$110 median for comparable used listings. For a purpose-built five-channel mic/line mixer from a respected install-audio brand, that’s the kind of price that usually leaves plenty of room for a very good pickup.
What makes it worthwhile is the practical utility: compact, low-noise mixing for fixed installs, with flexible mic/line handling and the sort of no-nonsense connectivity that RDL gear is known for. At this price, the main thing to confirm is completeness and basic functionality, especially that the required 24 V DC power setup is included or accounted for; otherwise, this looks like an easy buy for anyone who can use a clean utility mixer.
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.
