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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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US Audio Mart

Buchardt S400 MK2 US Audio Mart $1,375 Apr 5, 2026

Audio-markt

Buchardt audio s400 mkii Audio-markt €1,850 Apr 4, 2026

Kleinanzeigen

Buchardt Audio S400 MKII in Schwarz Seidenmatt Kleinanzeigen €1,850 8% Mar 15, 2026

US Audio Mart

Buchardt S400 in Walnut US Audio Mart $1,200 11% Mar 14, 2026

willhaben.at

Buchardt S400 + l150 Verstärker + bluesound Node 2i willhaben.at €3,000 Feb 27, 2026

Blocket

Buchardt S400 MK2 Limited Edition - Concrete (Unicorn) Blocket SEK 22,490 8% Feb 26, 2026

UK Audio Mart

Buchardt S400 MkII speakers UK Audio Mart €1,500 Feb 26, 2026

US Audio Mart

Buchardt S400 mkii US Audio Mart $1,700 6% Feb 19, 2026

Head-fi

Buchardt S400 mkii (Rosewood) with Bundle Option Head-fi $1,700 15% Feb 19, 2026

AVS Forum

Sold Buchardt S400 MKII x3 AVS Forum $2,000 Jan 28, 2026

Blocket

Buchardt s400 mkii Blocket SEK 19,000 Nov 25, 2025

Hifi forsale

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

Audio-markt

Buchardt s400 signature edition Audio-markt €2,800 11% Nov 29, 2022

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Model Variants of Buchardt Audio S400

1. Buchardt Audio
2. Bookshelf speaker

S400 MKII