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Buchardt Audio S400

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Compact two-way passive bookshelf speaker featuring a 6-inch aluminum cone woofer, 0.74-inch soft dome tweeter in a deep aluminum waveguide, and rear-mounted passive radiator. Designed using advanced holographic nearfield scanning with 5,402 measurement points for exceptional directivity control and off-axis response. The waveguide provides controlled directivity matched to the woofer down to 1,000 Hz for seamless driver integration.

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The Music Room

Buchardt Audio S400 MKII Bookshelf Speakers; Black Pair The Music Room $1,799 Feb 17, 2026

Canuck Audio Mart

Buchardt Audio S400 Mk 1 - PRICE DROP Canuck Audio Mart CA$1,900 14% Jan 31, 2026

US Audio Mart

Buchardt S400 MK2 Special "Fauna" Limited Edition -Stunning full video review by Steve Huff attached US Audio Mart $2,125 Jan 28, 2026

Canuck Audio Mart

Buchardt S400 Mark 2 stand mount speakers Canuck Audio Mart CA$2,500 Jan 8, 2026

Hifitorget

Buchardt S400Mk1 Hifitorget SEK 11,000 8% Jan 3, 2026

Blocket

Buchardt S400Mk1 Blocket SEK 11,000 8% Jan 3, 2026

Marktplaats

Buchardt S400 >>> Gaia III only! Marktplaats €295 90% Sep 16, 2025

Finn

Buchardt Audio S400 Finn NOK 15,000 Jul 15, 2025

Audioweb

Boxe Buchardt S400 Audioweb RON 6,500 Jul 5, 2025

Hifi forsale

Buchardt s400 Hifi forsale £1,300 Apr 8, 2025

Den Blå Avis

Højttaler, andet mærke, buchardt s400 smoked oak Den Blå Avis DKK 8,000 33% Feb 7, 2025

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Model Variants of Buchardt Audio S400

1. Buchardt Audio
2. Bookshelf speaker

S400 MKII