Linn Koil Moving Coil Cartridge

The Koil is Linn's entry-level moving coil cartridge — fitted as standard to the LP12 Majik MC and the first step onto a cartridge ladder that culminates in the Ekstatik. Entry-level in Linn's moving coil range does not mean entry-level by any wider measure. The Koil uses a nude Microlinear stylus, a boron cantilever, and a trapezoidal armature — material and engineering choices more commonly associated with mid-to-upper-level moving coil designs from other manufacturers, and ones that place the Koil meaningfully ahead of most moving magnet alternatives in terms of resolution, dynamic response, and inner detail.

Moving coil cartridges operate on fundamentally different principles to moving magnet designs. In a moving coil, very small and light coils are attached to the cantilever and move within a fixed magnetic field — the inverse of a moving magnet arrangement, where the magnet moves. The lower moving mass that results means faster, more precise stylus response — a more accurate transmission of groove modulations to the generator, with less inertia getting in the way. The trade-off is lower output voltage, which demands more from the phono stage. At 0.4mV, the Koil is not for a standard moving magnet input — it requires a dedicated MC phono stage with appropriate gain, or a step-up transformer ahead of an MM stage.

Nude Microlinear Stylus — Precision at the Groove

The Koil's stylus is nude — meaning the diamond tip is a complete stone, not a chip bonded to a metal shank. A nude stylus tracks the groove with greater consistency and lower resonance than a bonded design: the diamond is doing all the work, without a compliance mismatch at the bond line introducing its own character into the signal. The Microlinear profile is a fine-line geometry that contacts the groove wall over a narrow, precise area — offering better high-frequency tracing and lower record wear than a standard elliptical, and closer in contact geometry to the lathe stylus that cut the groove in the first place.

Boron Cantilever — Stiffness Without Mass

Boron is one of the reference materials for high-performance cantilever design — stiffer than aluminium, lighter than most alternatives, with internal resonances that sit well above the audio band. A boron cantilever transmits groove modulations to the generator with minimal energy loss and without adding its own resonances to the signal. It is not a material commonly found at the Koil's price point. Its presence here reflects the same philosophy visible throughout the Linn cartridge range — that the correct material for the job is the correct material at every level, regardless of where a product sits in the hierarchy.

Trapezoidal Armature

The armature geometry in a moving coil cartridge influences the linearity of the magnetic circuit — and by extension the distortion characteristics of the generated signal. The Koil uses a trapezoidal armature, a coil geometry that improves the linearity of flux coupling between the coils and the fixed magnets, reducing distortion in the generated signal. Combined with the low moving mass of the coil assembly, the result is a generator that is both accurate and clean.

System Matching — Phono Stage Requirements

The Koil outputs 0.4mV at 5cm/s. This is low output in absolute terms, and it is non-negotiable: moving magnet phono stages — including the built-in phono inputs on many integrated amplifiers — do not have sufficient gain for the Koil to perform correctly. A dedicated MC phono stage at appropriate gain, or a step-up transformer ahead of an MM stage, is required. If your current system has an MM-only phono stage, this is the conversation to have before buying the Koil — not after. We are happy to advise on what works well at different price points and with different system architectures.

Tracking force is 1.8–2.2g, with 2.0g nominal. Recommended load resistance is 100Ω. Cartridge mass is 7.6g — compatible with the Linn Krane Tonearm and other standard-mount Linn arms.

Technical Specifications

Who Is It For?

The Koil is for the LP12 Majik owner — or prospective owner — who has, or is committed to acquiring, a phono stage with proper MC capability. It is also the natural step for anyone running a Linn Adikt MM who wants to move into moving coil performance without the more demanding system requirements of the Krystal or Kendo above it in the range.

The Koil is a genuine moving coil cartridge — not a dressed-up entry-level compromise. The nude stylus, boron cantilever, and low moving mass are real performance advantages that put it measurably and audibly ahead of most MM designs in detail retrieval, dynamic response, and inner resolution. It is not the ceiling of what the LP12 is capable of — the Kendo, Krystal, Kandid, and Ekstatik are all above it — but it is a convincing and properly engineered first step onto that path.

If your phono stage is MM-only, the Linn Adikt remains the right choice. The Koil is the right choice once you have — or are willing to add — appropriate MC gain. That is a conversation we can help with.

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.

We can advise on phono stage matching for the Koil — the right pairing matters at this level, and there is a meaningful range of MC phono stages worth considering at different price points. If you are fitting a Koil to an existing Linn LP12 Majik Turntable, we will set it up correctly — tracking force, azimuth, and stylus rake angle all set to the correct parameters before the deck leaves us.

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.