RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
Comparable listings put this model at a median of US$89, with the upper quartile at US$165, so US$750 is exceptionally ambitious—more than four times the 75th-percentile asking price. Unless this includes substantial tested-system value, a warranty, or unusually valuable accessories, it is nowhere near a sensible used-market buy.
The CXD4.2Q is a capable four-channel Q-SYS/Q-LAN network amplifier with onboard DSP, limiting, monitoring, and flexible power distribution, delivering up to 1,600 W continuous across its channels. That makes it worthwhile for an existing Q-SYS installation, but the damaged display is a real usability concern, and the unit’s specialized network dependence narrows the buyer pool. At this price, insist on a full power-up, Q-SYS discovery/configuration test, clean output on every channel, and confirmation that the display fault is cosmetic rather than evidence of deeper damage.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Display Technologies does not appear to be a recognized brand in the hi-fi or consumer audio industry. Extensive searches yield no verifiable information on its origin, heritage, product focus, or market position among audio enthusiasts. Instead, results consistently reference general advancements in visual display technology, such as cathode ray tubes, LCDs, LEDs, and OLEDs, spanning from the late 19th century to modern innovations.
No records indicate a company by this name producing amplifiers, speakers, turntables, DACs, headphones, cables, or any audio equipment. It may be an obscure entity, a misnomer, or unrelated to hi-fi, with no notable founding year, country, or founder tied to sound reproduction.
Hi-fi buyers should verify the brand name or consider established alternatives, as fabricating details for an unconfirmed marque would mislead. If this refers to a specific niche player, further details from the querier could clarify.
See all Display Technologies listings on RADAR.
