Linn Arko Tonearm

The Arko is the middle tonearm in Linn's current range — above the Linn Krane Tonearm and below the reference Ekos SE — and it was built around a single, uncompromising engineering principle: that material consistency throughout a tonearm structure is not a manufacturing convenience but a fundamental performance decision. Every structural component of the Arko — arm wand, headshell, and counterweight spindle — is machined from the same grade of aluminium: 7075, the aerospace alloy specified where strength-to-weight ratio, dimensional stability, and consistent resonant behaviour are non-negotiable requirements. The result is a tonearm whose energy management is coherent from cartridge to bearing, and whose performance at this price point is without meaningful competition within the LP12 range.

The Arko represents the correct upgrade path for LP12 owners running a Krane who want gimballed bearing performance at a level the Krane cannot match — and for those building a mid-to-high specification LP12 where the Ekos SE's price point is not yet the appropriate destination. Paired with the Linn Kendo cartridge, the Arko forms one of the most coherent arm-and-cartridge combinations in the current Linn range — a pairing grounded in deliberate material matching rather than marketing convenience.

7075 Aluminium — One Material, One Structure

7075-grade aluminium is an aerospace alloy — used in aircraft structural components, precision machined parts, and applications where the tolerance between correct and incorrect material specification is measured in safety margins rather than preference. Its properties are well established: high tensile strength, low density, consistent machining behaviour, and a resonant profile that is both predictable and manageable within the audio frequency range.

Linn's decision to machine every primary structural component of the Arko from a single grade of this material addresses one of the fundamental challenges in tonearm design: what happens at material boundaries. When energy travels through a structure made from dissimilar materials — aluminium to steel to polymer to brass, as in many tonearm designs — it encounters impedance mismatches at each boundary. Some energy passes through; some reflects back; some accumulates at the interface. That accumulated and reflected energy returns to the cartridge generator as noise. By specifying 7075 throughout the arm wand, headshell, and counterweight spindle, Linn ensures that energy moves through the Arko's structure in a single consistent mode, without the boundary effects that material variety would introduce.

Gimbal Bearing Platform

The Arko uses a gimballed bearing — the classic, proven LP12 geometry, and the architecture that Linn has refined across every tonearm in the range from the Krane upwards. The stainless-steel through-spindle provides the lateral pivot, and the bearing assembly is designed for the lowest possible friction throughout its full range of motion in both planes — essential for allowing the cartridge to track groove modulations freely, without the bearing imposing any resistance that the stylus must overcome.

The headshell is machined with weight-reduction pockets — material removed with precision to lower headshell mass without compromising the rigidity that the cartridge mounting demands. Lower headshell mass reduces the effective mass contribution from that end of the arm, improving the match between arm effective mass and cartridge compliance.

Kendo Pairing — Material Coherence Beyond the Arm

The Linn Kendo cartridge body is machined from the same 7075-grade aluminium as the Arko's structural components. This correspondence extends the material consistency principle beyond the tonearm itself and into the cartridge — creating a genuine mechanical continuum from cartridge body through headshell to arm wand. Energy generated at the stylus-to-groove interface travels through a structure of consistent material properties from the point of origin to the bearing. Linn's own measurements confirm reduced resonance when Arko and Kendo are used together compared to other cartridge pairings. This is not a manufacturer's recommendation made for commercial convenience. It is a measurable physical result of coherent material design.

Where It Fits in the LP12 Range

The Arko is the correct arm for LP12 owners at Kore sub-chassis level and above — a tonearm whose capabilities are properly supported by the mechanical platform the Kore sub-chassis provides, and which combines with the Linn Karousel Bearing Kit and Kendo cartridge to define one of the most musically convincing mid-level LP12 builds currently available.

For those on a Linn LP12 Majik Turntable looking to take a step forward from the Krane, the Arko is the direct and correct next step — one that delivers a meaningful and immediately audible improvement in resolution, instrument placement, and low-level detail without requiring a simultaneous sub-chassis upgrade to justify it, though the combination of Arko, Kore, Karousel, and Kendo is where its capabilities are most fully expressed.

Technical Specifications

Linn does not publish effective length or effective mass figures for the Arko. Verify current specifications with Linn or confirm at point of installation.

Who Is It For?

The Arko is for LP12 owners who have outgrown the Krane and want a genuine step forward in performance — cleaner detail retrieval, better instrument placement, improved low-level resolution — without committing to the Ekos SE's price point. It is the arm of choice for a Kore-level build, and it is the natural partner for the Kendo cartridge. For those building a Linn LP12 Selekt Turntable level system, the Arko combined with Kore, Karousel, and Kendo represents a thoroughly considered and coherent upgrade — one where every component has been designed with the others in mind.

Buying from Martins Hi-Fi

Martins Hi-Fi has been in Norwich since 1968. Elizabeth Gould runs the business today, and we stock only brands we have heard properly and stand behind.

The Arko requires professional installation — arm collar alignment, cartridge mounting, and suspension balance all need to be set correctly for the upgrade to perform as intended. We carry out the full installation on our LP12 service bench and will not return a deck until every parameter is correctly set. If you are considering the Arko as part of a broader upgrade — alongside a Kore sub-chassis, Karousel bearing, or Kendo cartridge — speak to us first about the correct sequence and the most effective route to the build you are targeting.

When you get in touch, you'll be speaking with Dave, Chris and Tim — experienced specialists who can advise on this product and your whole system.

Contact us at info@martinshifi.co.uk, call 01603 627010, or WhatsApp on 07554 687137. You can read more about how we work on our Why Martins Hi-Fi page. We are at 85–91 Ber Street, Norwich, NR1 3EY.