RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
RAAL-requisite CA-1a Circum-Aural Ribbon Headphones - Over/On Ear RAAL REQUISITE CA-1a Ribbon Headphones with TI-1b amplifier interface for connection to any standard headphone amplifier. In original boxes with accessories. 30/11/23 receipt See my review here: - https://raalrequisite.com/wp-content/uploads/2023/01/Review-of-the-new-RAAL-REQUISITE-CA1a-pdf.pdf https://www.stereophile.com/content/raal-requisites-circumaural-ribbon-headset-ca-1a The CA-1a is a circumaural version of Raal's landmark SR-1a open baffle ribbon headphone. Unparalleled accuracy and realism in a soundfield devoid
The RAAL-requisite CA-1a is a specialized ribbon headphone amp—uncommon enough that direct comps are sparse, but your internal database shows a median asking price of A$2,178 with a 75th percentile at A$2,588. At A$2,199, this listing sits just above median, making it fairly priced rather than a steal. The asking price reflects realistic market positioning for a niche product; you're not overpaying, but you're also not catching a bargain.
Before committing, verify the unit powers up cleanly and that all output impedance settings engage without crackling or channel imbalance—ribbon amps can develop contact issues in the selector switches after years of use. Confirm which accessories ship with it (the original power cable, documentation, and any matched interconnects matter for this class of gear), and ask about service history. If it's been sitting unused for more than a year, a quick bench check for capacitor health is worthwhile, though the CA-1a is generally robust.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
RAAL-requisite emerged from a strategic partnership between two respected names in high-end audio: the Serbian RAAL group, renowned for ribbon tweeters and loudspeakers, and Requisite Audio Engineering, a California-based manufacturer of studio-grade components. The joint venture brought together decades of expertise in advanced driver technology and professional audio design, positioning the brand at the intersection of studio precision and consumer hi-fi.
The brand has carved a distinctive niche through ribbon-driver headphones, most notably the SR1a EarField™ Monitor—marketed as the world's first earfield monitor headphone—alongside the HSA-1b Switch-Drive amplifier. Rather than pursuing a broad product portfolio, RAAL-requisite has maintained laser focus on ribbon transducer technology across headphones and amplification, reflecting a philosophy of specialization over diversification. This narrow but deep product strategy underscores their commitment to mastering a single technology rather than competing across multiple categories.
RAAL-requisite occupies the upper echelon of the hi-fi market, serving discerning listeners, recording professionals, and mastering engineers who prioritize accuracy and sonic transparency above mass-market appeal. The brand's reputation rests on uncompromising engineering, premium pricing, and a devoted following within audiophile circles. Their positioning as a boutique, high-end manufacturer—rather than a mainstream consumer brand—reflects their target audience: those willing to invest substantially in specialized, purpose-built audio equipment.
See all RAAL-requisite listings on RADAR.
StereoNET
AU
StereoNET
AU
StereoNET
audio-markt.de
Good
audio-markt.de
New
audio-markt.de
Good
DE
