• 200W continuous power to the bass driver

• 100W continuous power to the mid-range driver

• 50W continuous power to the high-frequency driver

Within the first line-level stages, new discrete gain blocks have been developed and implemented within a balanced instrumentation input and fourth-order active crossovers to achieve a lower noise floor and reduced distortion.

The power supply has been comprehensively redesigned and upgraded with individual toroidal transformers for each power amplifier channel, plus a separate transformer for the low-voltage supply. This topology improves headroom under demanding use and reduces intermodulation distortion between channels, delivering greater clarity to the listener.

Key Amplifier Features

• All-new 3-channel discrete active amp pack delivering 200W, 100W, and 50W continuous power to bass, mid, and high-frequency sections respectively

• Low-noise balanced instrumentation input

• Completely new power supply design featuring individual toroidal transformers for each amplifier channel plus an additional transformer for the 12V supply

• New 4th-order active crossover implemented via all-discrete gain blocks delivering very low noise and distortion

• Larger bass transformer for improved power regulation and greater headroom under demanding use

• Discrete MOSFET Class A-B output stages

• Power on/off trigger input and link for integrated system control

• User-selectable input sensitivity for optimal source matching

• Generous heatsink maintains low operating temperatures

• Live fault monitoring of power amplifier DC offset and temperature

Cabinetry and Finishing

Building on previous development work, the EL50 Anniversary cabinet construction has been improved and updated using advanced in-house manufacturing technology to increase stiffness and internal damping. This reduces cabinet-borne coloration in the upper bass and mid-range.

The bass driver is mounted into a precision-turned aluminum ring bolted into the cabinet face to increase structural integrity. The curved cabinet face and edges create a smooth transition from the driver output into the room, reducing edge diffraction and producing a more uniform frequency response both on and off axis.

Hand-selected and matched European walnut veneers cover the curved cabinet surfaces, complemented by ebony inlays on the rear panel and finished with a high-gloss polyester lacquer. Upholstered napa leather panels around the mid and high-frequency drivers and lower front section add contrast while integrating seamlessly with the overall form.

Key Cabinet Features

• Curved laminated construction combining high stiffness and damping to reduce coloration

• Precision-turned aluminum bass driver mounting ring for increased rigidity

• Curved elliptical cabinet face and edges reduce diffraction and improve imaging

• Hand-selected European walnut veneers with ebony inlays and high-gloss lacquer finish

• Upholstered napa leather panels for visual and tactile refinement

• CNC-machined alloy foot-bars threaded for supplied spikes

• Fabric-wrapped magnetic grille

Drive Units

The drive units are built entirely in-house, focusing on low distortion and consistent performance across all playback levels.

SH25-76S ‘S-Spec’ Tweeter

• Powerful neodymium motor supporting frequency response beyond 25kHz

• Compact size improves dispersion and integration with the mid-driver

• Dual-suspension system for precise coil and diaphragm control

• Coated fabric dome ensures smooth response and low listener fatigue

SM75-150S ‘Superdome’ Mid-Range Driver

• Wide bandwidth from 380Hz to 3.5kHz

• High-power magnet and large voice coil ensure high efficiency and low compression

• Resolves fine musical detail while handling large dynamic peaks effortlessly

SB75-234SL ‘Super Linear’ Bass Driver

• Super Linear motor system reduces third harmonic distortion

• Optimized suspension enables large linear excursion with low distortion

• Large 3″ (75mm) voice coil minimizes compression and ensures consistent low-frequency performance

Limited Anniversary Edition

The EL50 Anniversary launches as an exclusive run of 50 pairs, each supplied with a hardbound owner’s handbook celebrating ATC’s history from its founding in 1974 as a drive unit specialist to its current status as one of the world’s most respected loudspeaker manufacturers.

Following the limited edition release, the EL50 will enter continued production.

Shipping Weights and Dimensions

Pack Type: Plywood crate (one speaker per crate)
Packed Weight: 111kg / 245lbs per speaker
Packed Dimensions (H × W × D):
64 × 59.5 × 150cm / 25 1/4″ × 23 3/8″ × 59″

Availability

U.S. Availability: April 2026

U.S. Retail Pricing

$99,999 USD per pair