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Technisch wie optisch im guten Zustand. Großartiger Klang.
This is a buyer’s market for this category right now: at €150, the asking price sits just below the €151 median and right on top of the €151 25th percentile, so it reads as fair-to-strong value rather than a bargain or an ambitious ask. With only three recent comparables in the database, the spread is very wide up to €814, so the price is comfortably in the sensible zone for the market we can actually see.
These ESS AMT tweeters are well-regarded for their airy top end, fast transient response, and high efficiency, which makes them a fun upgrade part for vintage and DIY systems. The real upside is rarity and usability: a clean pair at this level can be a smart buy if the diaphragms are intact and both units measure evenly. At this price, the main thing to confirm is originality and working condition, since age is the only meaningful risk on a 1970s driver.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
ESS is best known as ESS Technology, a U.S. semiconductor company founded by Forrest Mozer in 1983 as Electronic Speech Systems. It began in California and grew from speech and multimedia chips into a specialist in audio conversion silicon, with its later identity strongly tied to digital audio technology rather than finished consumer hi-fi products.
The company’s core focus is audio DACs and ADCs—especially the SABRE family—used by manufacturers in audio, mobile, automotive, and professional equipment. In hi-fi terms, ESS is not primarily a maker of amplifiers, speakers, turntables, or headphones; instead, it supplies the conversion chips that sit inside many third-party components.
In the market, ESS has a technical, high-performance, component-supplier reputation rather than a consumer brand identity. Among informed audiophiles it is often associated with high-end and upper-mid-tier digital playback, while also being somewhat niche because its name usually appears inside other brands’ products rather than on the front panel. It is a respected engineering brand, but not a vintage collector name in the usual sense.
See all ESS listings on RADAR.
