Phono Cartridges
The headshell, also known as a headshell, ensures the connection between the phono cartridge and the tonearm of your turntable. Attached to the end of the arm, it holds the cartridge that contains the stylus tracing the record’s grooves. Made from anti-resonance materials such as aluminum, carbon, or wood, it directly influences playback quality. The standard SME (or 1/2-inch) mount equips the majority of current turntables and allows easy cartridge changes. Learn more
What is a headshell?
The headshell serves as the physical interface between the tonearm and the phono cartridge. Mounted at the end of the arm, it accommodates the cartridge that converts the stylus’s mechanical vibrations into electrical signals. This seemingly simple part plays a crucial role in the playback chain: it must hold the cartridge firmly while minimizing unwanted resonances that would degrade sound reproduction.
On many turntables, the headshell is removable, which makes replacing or swapping cartridges easier. This modularity is particularly appreciated by DJs, who can prepare multiple cartridge/headshell combinations and switch them quickly. For audiophiles, it allows adapting the cartridge to music type or optimizing setup without fully dismantling the system.
Some tonearms integrate the headshell directly into their structure, forming a single piece. This one-piece design, found on certain high-end Pro-Ject or Rega models, reduces junction points and can improve overall rigidity. However, it removes the ability to change cartridges quickly.
The different mounting types
The standard SME mount (or standard 1/2-inch) is the most widespread system. The cartridge is attached to the headshell with two screws spaced 12.7 mm apart (half an inch). The headshell itself connects to the arm via a bayonet with four electrical contacts. This universal system equips most current turntables, from entry-level models to audiophile setups. Brands like Technics, Audio-Technica, Ortofon, SME, Numark, and Stanton use this standard.
The advantage of the SME mount lies in its versatility. The lead wires exit the arm and connect to the cartridge via clips. A universal color code makes wiring easy: red for right hot, green for right ground, white for left hot, blue for left ground. This standardization prevents wiring errors that could invert channels or cause malfunctions.
The P-Mount (or T4P for “Plug-in on 4 Pins”) was common on entry-level turntables until the mid-1980s. In this system, the cartridge plugs directly into the arm via a standardized connector, with no separate headshell. A single screw passes through the arm and cartridge to secure it. This mount simplifies installation but limits adjustments and compatibility with high-end cartridges. It is becoming rare on recent turntables.
Integrated mounting characterizes certain high-end arms where the cartridge screws directly onto the arm tube, with no separate headshell. Used notably for P-format cartridges (e.g., Ortofon SPU), this system offers great rigidity but requires adapters to fit standard 1/2-inch cartridges.
Materials and acoustic properties
The choice of headshell material influences the turntable’s sonic characteristics. Each material offers a different trade-off between rigidity, mass, and vibration damping.
Aluminum dominates the headshell market. Lightweight, rigid, and economical to machine, it offers strong value for money. Brushed or anodized aluminum models (black, gray, titanium, copper) combine solid performance with affordable pricing (€15 to €40). Mass typically ranges between 10 and 15 grams depending on thickness and design. Manufacturers like Analogis or Audio-Technica offer numerous aluminum options, often available in several colors.
Carbon fiber is the premium material for audiophile headshells. Extremely rigid yet lightweight (8 to 12 grams), carbon effectively damps vibrations and limits resonances. The Pro-Ject Signature Headshell Carbon, a popular choice, weighs only 10 grams and offers exceptional rigidity. This combination promotes better groove tracking and a more stable stereo image. Trade-off: the price increases (€60 to €150 depending on the model).
Wood offers a different approach. Some manufacturers like Ortofon (model LH-8000) or Pro-Ject offer hand-made, varnished wooden headshells. Wood has natural damping properties that can slightly color the sound, giving it a warmth appreciated by some audiophiles. More fragile than aluminum or carbon, wood requires special care during installation to avoid cracks at the mounting points.
Magnesium and special alloys equip high-end headshells. These materials combine extremely low weight with excellent rigidity, but their high price reserves them for demanding audiophile setups. Clearaudio notably offers CNC-machined titanium models delivering exceptional manufacturing precision.
Upgrading an existing setup
Replacing the stock headshell with a higher-performance model is an accessible and effective way to upgrade your turntable. Audible gains include a more stable, focused stereo image, better channel separation, increased dynamics, reduced background noise and parasitic resonances, and more faithful timbre and detail reproduction.
This upgrade typically costs between €30 and €150, less than changing a cartridge or an entire arm. It lets you fully exploit the potential of a quality cartridge that might be held back by a basic headshell. Audiophiles often choose a carbon or special-alloy headshell when investing in a high-end cartridge (Ortofon 2M Black, Nagaoka MP-500, Audio-Technica VM750SH…).
Compatibility and accessories
Before buying a headshell, check compatibility with your tonearm and cartridge. The SME standard largely dominates, but some arms use proprietary connections. P-mount or SPU cartridges require specific adapters to be installed on a standard headshell.
Manufacturers such as Ortofon, Audio-Technica, Nagaoka, Clearaudio, Pro-Ject, and Thorens offer comprehensive ranges of headshells and related accessories. DJs particularly appreciate lightweight, robust models like those from Audio-Technica (AT-LH series), designed to withstand frequent handling.
The headshell is often overlooked when optimizing a turntable, yet it is an essential link in the playback chain. Replacing it with a suitable model can transform the listening experience, revealing nuances previously masked by the limitations of the original component.
