The new leaderboard
Coltrane Supreme Extreme is our no-limits flagship: a five-way, dual-tower speaker built to redefine what’s possible in home audio. By its side is Coltrane Quintet Extreme—a model developed in parallel, using the same pure diamond and beryllium drivers.
One sets the benchmark. The other brings that same core technology to a single-cabinet form. Two speakers. One philosophy.
Performance without compromise
Coltrane Supreme Extreme was created without limits—a five-way, dual-tower speaker built to push the boundaries of what’s possible. Coltrane Quintet Extreme distils that technology into a single-cabinet, four-way design. Both use first-order crossovers, Jorma Paragon internal wiring and Marten Isolators to preserve fidelity. One the pinnacle of our craft. The other, its closest companion.
Redefining precision
Shared across both models are our finest custom drivers. The 1” and 3” diamond tweeters offer unmatched clarity and speed, while the 7” beryllium midrange delivers astonishing resolution with warmth and presence. With Crystalid for Supreme Extreme and aluminium sandwich bass drivers for both, these models are voiced to reveal music in its most natural form.
Resonance resolved
Coltrane Supreme Extreme’s cabinet uses a seamless carbon fibre monocoque structure, combined with solid wood and aluminium layers for unmatched rigidity. Coltrane Quintet Extreme echoes this with a multi-layer carbon fibre laminate and the same structural front baffle design. Every element is engineered to eliminate resonance—so only the performance remains.
Attention to detail
Every surface, every connection, every component is considered. From the hand-polished stainless steel feet to the custom terminals and internal cabling, Supreme Extreme and Quintet Extreme are assembled with exacting care.
Discover Coltrane
Coltrane is where we break new ground. Explore the full series and see how each model builds on the next—culminating in the most advanced speakers we’ve ever made.