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Timing matters here because the M204 is a discontinued model, and the newer M205/M500-era MSB monos sit above it in the line, so you are buying into a proven but older generation. At £7,995, this pair sits above the listed median of £5,344 and also above the 75th percentile of £7,751, so it reads as ambitious rather than a bargain.
That said, the M204 is well regarded for its fully Class A, high-current presentation and serious drive, so the appeal is real if you want MSB’s top-tier build and sound without going to current flagship money. The main upside is simply that these are still reference-grade monoblocks with strong residual desirability; just make sure the sale includes the usual essentials, the cosmetics are genuinely clean, and there is no sign of heat-related wear or missing packaging, because at this level you want the full, ready-to-run set.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
MSB Technology emerged in the late 1980s from Silicon Valley, California, with roots tracing to 1986 or 1989, depending on the account. Founded by Marcus Brassfield and Larry Gullman, the company began by modifying consumer CD players like the Magnavox, evolving through contracted digital research into a family-owned enterprise. Today, brothers Jonathan Gullman (CEO) and Daniel Francis lead operations from Watsonville, upholding a legacy of in-house innovation in precision engineering.
The brand specializes in ultra-high-end digital audio components, renowned for its modular DAC platforms such as the Discrete, Premier, Select, and flagship Cascade and Sentinel. Pioneers of discrete ladder DAC modules since 1999, MSB also produces bit-perfect digital transports, ultra-precise clocks, analog-to-digital converters, and pure Class A amplifiers delivering up to 500 watts. Their fully integrated production—encompassing PCB assembly, CNC machining, and 3D inspection—ensures uncompromising quality without reliance on external suppliers.
Positioned firmly in the cost-no-object boutique segment, MSB commands reverence among discerning audiophiles for setting benchmarks in lifelike digital playback and future-proof modularity. Stratospherically priced yet unmatched in transparency and adaptability, their products appeal to those prioritizing authentic reproduction over convention, solidifying a niche as Silicon Valley's audacious high-end trailblazer.
See all MSB Technology listings on RADAR.
