Audeze LCD-5s

Audeze LCD-5s: high-end planar headphones with SLAM technology

Presented at NAMM 2026, the LCD-5s retains the architecture of the LCD-5 while integrating SLAM technology, previously reserved for the CRBN2 electrostatic headphones. These open-back circumaural headphones combine a 90 mm planar magnetic transducer with a lightweight magnesium and carbon fiber structure. Audeze claims a more natural frequency response than the LCD-5, more physical bass, and a wider soundstage.

A redesigned transducer built around the Parallel Uniforce diaphragm

The LCD-5s uses a nanometer-thick diaphragm called Parallel Uniforce, whose conductive traces vary in width to evenly distribute current density. This technical choice keeps the impedance at 35 ohms while reducing harmonic distortion below 0.1% at 100 dB SPL.

The diaphragm is suspended between Fluxor N50 neodymium magnets, a patented configuration that focuses the magnetic flux toward the diaphragm without using additional stator plates. The result: precise control of diaphragm movement with a contained weight. The Fazor waveguides, repositioned further back inside the earcups, direct sound waves in parallel to limit diffractions and interactions with the ear’s pinna.

The bandwidth extends from 5 Hz to 50 kHz, and the sound pressure level can exceed 130 dB.

SLAM technology and its effects on low frequencies

SLAM stands for Symmetric Linear Acoustic Modulator. Acoustic channels machined into the ring that connects the earpads to the transducer modulate the air pressure between the ear and the diaphragm. By venting excess pressure in a controlled manner, these channels reduce the asymmetric resistance normally experienced by the diaphragm when it compresses air toward the eardrum.

Audeze claims a 6 dB gain in the low frequencies, extending down to 10 Hz. This boost is similar to a slight low-frequency shelf mechanically integrated into the headphones. The resulting reduction in distortion improves soundstage transparency, according to the manufacturer.

On the original LCD-5, some users found the bass too neutral or lacking physical impact compared with the older LCD-4 models. SLAM addresses this criticism by reinforcing bass presence without resorting to electronic coloration.

Build quality and comfort during long sessions

The frame combines magnesium and carbon fiber. The earcup rings are made of polished polymer acetate, with a tortoiseshell effect and copper accents. The weight reaches 475 grams, 55 grams more than the LCD-5 (420 g) but well below the LCD-4, which exceeded 690 g.

The earpads have been redesigned with a curved geometry. Their shape limits internal acoustic reflections while improving the seal around the ear. Audeze states that this design reduces the contact surface with the face to decrease fatigue during long listening sessions.

The carbon fiber headband incorporates a perforated leather strap for ventilation. The clamping force remains firm: the first LCD-5 units were criticized for greater lateral pressure than previous models. The LCD-5s retains this characteristic, which may be an issue for glasses wearers or people sensitive to pressure on the temples.

Amplification and power requirements

With a sensitivity of 90 dB/1mW and an impedance of 35 ohms, the LCD-5s requires serious amplification. Audeze recommends at least 100 mW and suggests 500 mW or more to fully exploit the headphones’ capabilities. The maximum continuous power handling is 5 W RMS.

A smartphone or laptop will not be enough. A dedicated headphone amplifier with low output impedance (ideally below 4 ohms) will provide optimal control of the diaphragm. Balanced sources can offer a slight improvement in channel separation thanks to the supplied 4-pin XLR connection.

The LCD-5s impedance (35 ohms) is higher than that of the original LCD-5 (14 ohms). This change makes pairing with some amplifiers slightly easier, but the identical sensitivity of 90 dB/1mW keeps power requirements similar.

The cable and included accessories

The supplied cable uses high-purity OCC (Ohno Continuous Cast) copper with directional braiding. The 4-pin XLR termination allows a balanced connection. Two adapters are included: 4-pin XLR to 6.35 mm jack, and 6.35 mm jack to 3.5 mm jack.

The whole set comes in a rigid aluminum carrying case, with enough space for the headphones and accessories.

Differences compared with the original LCD-5

The LCD-5s is not just a cosmetic update. The transducer has been revised with a new internal frame allowing more precise tuning of the midrange. The addition of SLAM significantly changes bass reproduction: more physical impact, more extension into the sub-bass.

The redesigned earpads also change the internal acoustics. Impedance increases from 14 to 35 ohms, which alters the interaction with some amplifiers. The weight increases slightly (475 g versus 420 g).

For LCD-5 owners satisfied with the original tonal balance, switching to the LCD-5s is not essential. However, those who found the LCD-5 too “clinical” in the bass or who are seeking more physical presence will find it meets their expectations.

Technical specifications

Transducers and technologies

• 90 mm high-precision planar transducers
• Planar Magnetic technology
• N50 neodymium Fluxor magnets for maximum efficiency
• Fazor technology for better phase management
• SLAM technology for more physical and detailed bass
• Nanometric Parallel Uniforce diaphragm

Frequency response and audio performance

• Extended frequency response: 5 Hz – 50 kHz
• Impedance: 35 ohms
• Sensitivity: 90 dB / 1 mW
• Maximum sound pressure level: > 130 dB
• Total harmonic distortion (THD): < 0.1% at 100 dB SPL

Power

• Minimum required power: > 100 mW
• Recommended power: > 500 mW
• Maximum admissible power: 5 W RMS

Design and comfort

• Type: open-back circumaural headphones
• Lightweight magnesium and carbon fiber design
• Redesigned ergonomic earpads for long-lasting comfort
• Weight: 475 g

Audiophile cable

• High-end ultra-pure OCC copper cable
• Designed to minimize signal resistance and capacitance
• Extremely faithful audio transmission and precise sound reproduction

Box contents

• Audeze LCD-5s headphones
• Premium 4-pin XLR balanced cable
• 4-pin XLR to 6.35 mm jack adapter
• 6.35 mm jack to 3.5 mm jack adapter
• Aluminum transport case