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Audio Synthesis PAS-02 passive pre amplifier (Ben Duncan design)
Synthesis Audio 4 views

Audio Synthesis PAS-02 passive pre amplifier (Ben Duncan design)

USD$332 GBP$249
Location
GB
Seller
mgjk0000
Source
eBay UK
Posted
13 May 2026
Last seen
1d ago

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Our Thoughts RADAR AI

This is a buyer’s market for this kind of passive preamp: at £249, it’s well below the £580 25th percentile and miles under the £910 median, so this reads as a strong bargain rather than a borderline fair ask. For a niche Synthesis Audio piece, that’s the sort of pricing that should get an enthusiast’s attention quickly.

The appeal here is the simplicity and transparency of a well-executed passive line stage: if the rest of the system has enough gain and a friendly source/load match, these can sound very clean, open, and direct. The Ben Duncan pedigree adds credibility, and passive designs tend to age better than active preamps because there’s less circuitry to go wrong. I’d still want to confirm the input/output compatibility and pot condition, but at this price those are sensible checks, not red flags.

Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.

About Synthesis Audio

Synthesis Audio is an obscure hi-fi brand with limited verifiable public information available, making a detailed heritage sketch challenging without speculation. No confirmed records pinpoint its founding year, country of origin, or a notable founder, though it appears to operate in the niche realm of boutique audio components rather than mainstream consumer electronics.

The brand's product focus, based on sparse online mentions, centers on high-end amplifiers and integrated systems, potentially extending to DACs and cables, but details on speakers, turntables, or headphones remain unconfirmed and inconsistent across sources.

Positioned as a niche boutique player, Synthesis Audio caters to discerning audiophiles seeking esoteric, handcrafted gear, but it lacks the established reputation of high-end stalwarts like Naim or Magico. Knowledgeable buyers may encounter it in specialty forums, yet its market presence is marginal, warranting caution for unverified performance claims.

See all Synthesis Audio listings on RADAR.

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