unbelievable audio

High-End Audio Systems

for listeners who want to hear what is truly possible
not just what is convenient.

Acapella
Sonic Sanctuary

Showroom by unbelievable audio - Isen (near Munich)

We are delighted to announce the opening of the Acapella Sonic Sanctuary situated inside the penthouse on top of the HECstore in Isen near Munich.

Join us in celebrating a space dedicated to extraordinary sound, refined design, and an immersive listening experience. We look forward to welcoming you.

book an appointment
Sonic Sanctuary Showroom

Bürgermeister Hallwachs Str. 8

84424 Isen

+49 9126 / 2 60 45 30

info@unbelievableaudio.com

Press & Reviews

Selected coverage and editorial mentions (external sources).

HiFiStatement.net (Feb 13, 2026) reports in German on the “move” and setup of an Acapella Hyperion loudspeaker in a photo-driven feature, paired with an interview about Acapella Audio Arts’ new corporate structure.
In the conversation, Richard Rudolph (new Managing Director) explains the strategic shift toward clearer distribution structures and less direct sales, while Marc Lindike / Unbelievable Audio is introduced as responsible for worldwide distribution going forward.

hifistatement.net / Eine Acapella Hyperion zieht um · Dirk Sommer · 13.02.2026

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Press & Reviews

Selected coverage and editorial mentions (external sources).

fairaudio (Feb 25, 2026) reports in German that Acapella Audio Arts is entering a new phase with a change in management and a restructured sales approach: the company is moving away from direct sales and will work exclusively through specialist dealers, while worldwide distribution is handled by Marc Lindike / Unbelievable Audio. The article also highlights the opening of a dedicated Sonic Sanctuary showroom in Isen (near Munich), featuring multiple listening rooms designed for proper demonstrations of Acapella’s horn loudspeaker systems.

fairaudio.de / “Acapella Audio Arts: new management, distribution & showroom in Isen” · 25.02.2026

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Acapella Hypersphere in a listening room

New at unbelievable audio

Acapella Hypersphere

We are proud to announce our exclusive distribution of the Acapella Hypersphere loudspeakers. An extraordinary product for uncompromising sound culture.

The new HYPERSPHERE is created to be the largest, fastest and most dynamic system ever built in the history of high-end audio. This final statement will be limited to 5 pieces worldwide, created by ACAPELLA mastermind Alfred Rudolph. In his musical journey of creating timeless icons, this hyperspherical loudspeaker system is the culmination of nearly 70 years of research into the enjoyment of music.

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