New Klimax Radikal & Keel SE: Reference LP12 Performance

  • Posted on 9 October 2025

New Klimax Radikal & Keel SE: Reference LP12 Performance

The headline: Linn has launched two major LP12 upgrades—Klimax Radikal with bespoke Utopik power supply and Keel SE sub-chassis with 300% increased stiffness. Both are now available at Martins Hi-Fi in Norwich.

Linn Klimax Radical at Martins Hi-Fi

Klimax Radikal: Reference Motor Control & Power Supply

The new Klimax Radikal features separate, dedicated power rails for controlling your LP12's motor and powering your Urika phono stage. These rails are independently self-regulating, meaning power demands from the motor never affect your phono stage, and vice versa.

The Engineering: The Utopik power supply sits in its own machined aluminium enclosure within the chassis, providing superior electrical isolation. The entire unit weighs nearly 14kg, machined from three pieces of solid aluminium and mounted on high-mass stainless steel feet with rubber inserts. Available in silver or black anodised finishes.

What You'll Hear:

  • Blacker backgrounds revealing previously masked detail
  • Improved bass weight and definition
  • Enhanced soundstage depth and separation
  • Extraordinary pitch stability
Linn Keel SE - Martins Hi-Fi

Keel SE: The Most Advanced LP12 Sub-Chassis Ever Made

Linn used Finite Element Analysis—the same technology used in aerospace and Formula 1—to redesign their flagship sub-chassis from the ground up. The result is 300% stiffer than the original Keel, with the first resonance mode pushed from 180Hz to 500Hz.

Three Key Improvements:

1. Stiffness Where It Matters The area between the Karousel bearing mount and tonearm collar has been dramatically stiffened. Even microscopic movements here affect the stylus-to-groove relationship. Keel SE's rigidity minimises tracking distortion.

2. Better Weight Distribution At 2.2kg (nearly double the original), material has been strategically placed to balance the centre of mass more evenly on the suspension. This improves how the springs share the load and enhances acoustic isolation.

3. Superior Finish The tonearm collar is machined separately, allowing the armboard to be face-milled to a flawless plane. After anodising to deep black with laser-etched logo, this is visibly Linn's finest sub-chassis.

What You'll Hear:

  • Greater resolution of low-level detail
  • Improved dynamic range and impact
  • Enhanced bass definition and texture
  • Wider, deeper soundstage with precise imaging

The Right Upgrades for Your LP12?

If you're running an older Radikal with Dynamik power supply, or an LP12 with Kore or original Keel sub-chassis, these upgrades represent significant performance improvements. This is precision engineering that will serve your LP12 for decades.

Experience Them at Martins Hi-Fi

We have both Klimax Radikal and Keel SE available for demonstration in our Norwich showroom. Come hear what these upgrades bring to LP12 performance.

Contact us to book your demonstration or discuss upgrading your existing LP12. We also offer trade-in valuations for your current Radikal or Keel.

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