RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
Monolith 5X Multi-Channel Amplifier. 200W per channel at 8 ohms. In perfect working condition, all channels tested and working. Includes required IEC 60320 C19 power cable. More info on this amp can be found on the Monoprice or Amazon pages for it. Willing to negotiate on price.
US$1,299 is ambitious versus the typical used market here; it sits well above the US$450 75th percentile and far above the US$200 median. That makes it a stretch unless this one is unusually complete, lightly used, or comes with provenance that matters to you.
What keeps it interesting is the core appeal: Monolith multichannel power amps are built for serious theater duty, with enough channels and current to cleanly anchor a full surround setup without needing separate boxes. If the unit is truly clean, fully functional, and includes the original power cable plus any extras the seller forgot to mention, it could still suit someone who wants a tidy one-box solution—but at this ask, buyers should be comparing against stronger-value alternatives rather than paying a premium casually.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Monolith is the premium audio label of Monoprice, a U.S. consumer-electronics company founded in 2002 in California. The Monolith sub-brand appeared in 2017 and was developed to give Monoprice a more serious hi-fi and home-theater identity, with product development led by Hobie Sechrest. It is not an old-school heritage marque, but a modern house brand built on Monoprice’s direct-to-consumer model.
The range is broad and performance-oriented, including headphone amplifiers, DACs, preamps, power amplifiers, AV processors, subwoofers, loudspeakers, and some accessories. Monolith products are also known for collaborations with audio engineers and for using technologies such as THX AAA amplification and Dirac processing in selected models. The lineup tends to emphasize measured performance and feature density rather than ornate industrial design.
In the market, Monolith sits in the value-focused end of the serious-audio segment: above budget entry-level gear, but usually below traditional high-end brands on price. Its reputation is strongest among buyers who want strong specs, credible engineering, and competitive measurements without paying premium-brand margins. It is best understood as an enthusiast-friendly, price-aggressive contender rather than a boutique or collectible label.
See all Monolith listings on RADAR.
