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This US$149 asking price is a strong bargain, sitting well below the 25th percentile of US$154 from 25 recent comparable listings, and drastically under the median of US$500. Given the Rialto 400’s original US$799 MSRP and its reputation as a compact yet potent Class D amplifier/DAC combo delivering 100W per channel (8Ω) and 400W in mono-block mode, this listing represents an exceptional entry point into high-power, digital-ready hi-fi at a fraction of its past value.
The Rialto 400 is well-regarded for pairing clean, high-current amplification with a high-performance Wolfson DAC supporting up to 24-bit/192kHz, making it ideal for streaming or digital sources without needing a separate converter. In white, it’s a rarity that blends modern aesthetics with serious performance. At US$149, even with unknown condition, the upside is immense—this is a buy opportunity for enthusiasts who can verify functionality, not a risk to shy away from.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Founded in 1977 in the Pacific Northwest outside Seattle, USA, AudioControl emerged during the Golden Age of Hi-Fi, when professional music engineers sought to bridge the gap between studio mastering tools and home listening. Conceived to help enthusiasts overcome room acoustics and recapture the intended sonic fidelity of recordings, the company has maintained its manufacturing base there for nearly five decades, fostering a culture of relentless innovation and craftsmanship.
AudioControl specializes in high-performance amplifiers, signal processors, receivers, and preamplifiers designed for demanding applications. Iconic products like the Epicenter bass processor highlight their expertise, alongside multi-zone amps, home cinema solutions, and distributed audio gear tailored for whole-home, outdoor, and commercial setups. These components excel in transforming standard audio into immersive, concert-like experiences, with a legacy in equalizers and processors born from the vinyl and cassette era.
Positioned as a mid-to-high-tier leader in custom integration and professional AV, AudioControl commands strong market share—ranking No. 5 in home theater processors and No. 6 in amplifiers per 2021 analysis—prioritizing reliability for installers over mass-market consumer gear. Award-winning and patent-backed, it appeals to discerning buyers valuing pro-grade performance in residential and commercial environments, backed by a network of specialty dealers worldwide.
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