ATC Unveils EL50 Anniversary Loudspeaker with Advanced Tri-Amp Technology

Elevating sound with the new EL50 Anniversary loudspeaker, ATC blends heritage design and cutting-edge audio performance.

If you’re a lover of finely tuned audio gear, the announcement of the EL50 Anniversary from ATC is bound to get your heart racing. This new loudspeaker is not just another release; it’s a celebration of decades of engineering excellence wrapped in an elegant package that audiophiles and music lovers alike will appreciate.

The EL50 Anniversary loudspeaker showcases sleek leather detailing and hand-selected veneers.

North America Debut at AXPONA 2026

Mark your calendars for April 10–12, 2026, when ATC’s EL50 Anniversary makes its North American debut at the Schaumburg Convention Center in Chicago, IL. You’ll find this gem at the ATC – Lone Mountain Audio Exhibit Suite 1534. For audiophiles eager to hear the evolution live—this is your golden opportunity.

Next-Level Discrete Active Amp-Pack

What really sets the EL50 Anniversary apart is its newly developed 3-channel discrete active “Amp-Pack.” This proprietary amplifier system delivers:

• 200W continuous power to the bass driver
• 100W continuous power to the mid-range driver
• 50W continuous power to the high-frequency driver

Right from the start, the speaker’s line-level stages feature newly developed discrete gain blocks within a balanced instrumentation input, paired with fourth-order active crossovers. The result? A significantly lowered noise floor and diminished distortion for crystal-clear sound reproduction.

The power supply, too, sees a complete overhaul—individual toroidal transformers power each amplifier channel, plus a separate transformer handles the low-voltage supply. This design boosts headroom during demanding playback and slashes intermodulation distortion, meaning every note arrives with precise clarity.

Amplifier Highlights

• State-of-the-art 3-channel discrete amplifier delivering 200W, 100W, and 50W continuous power respectively
• Balanced, low-noise instrumentation inputs for cleaner signal paths
• Redesigned power supply with individual toroidal transformers for each channel plus a dedicated transformer for the 12V supply
• Fourth-order active crossover implemented with all-discrete gain blocks for ultra-low noise and distortion
• Larger bass transformer enhances power regulation and increases headroom
• Discrete MOSFET Class A-B output stages for smooth, robust amplification
• Power on/off trigger input and link for integrated system control
• User-selectable input sensitivity to optimize source matching
• Generous heatsinks to maintain cooler operation
• Live fault monitoring for DC offset and temperature, safeguarding performance

Impressive Cabinetry and Finishing

The EL50 Anniversary’s cabinet doesn’t just house the tech—it’s a crafted work of art. Taking cues from the EL150’s elliptical shape, the design emphasizes structural integrity and acoustic purity. The cabinet employs curved laminated construction that balances high stiffness with effective internal damping, cutting down on coloration in the upper bass and mid-range.

What’s really neat is the precision-turned aluminum ring securing the bass driver, bolted directly into the cabinet face to enhance rigidity. This curved cabinet face and edges help smooth the transition of sound into your listening space, reducing diffraction and producing even frequency response on and off-axis.

Visually, it’s a stunner: hand-selected European walnut veneers wrap the curved surfaces, with ebony inlays on the rear panel, all finished in a high-gloss polyester lacquer. Around the mid and high-frequency drivers, and on the lower front section, rich napa leather panels add a tactile and visual contrast that’s surprisingly classy.

Cabinet Features

• Curved laminated construction for reduced coloration
• Precision aluminum mounting ring for the bass driver
• Elliptical cabinet shape to minimize diffraction and improve imaging
• Hand-matched European walnut veneers with ebony inlays
• High-gloss polyester lacquer finish
• Upholstered napa leather panels adding elegant texture
• CNC-machined alloy foot-bars threaded for supplied spikes
• Fabric-wrapped magnetic grille for a clean aesthetic

Fully In-House Built Drive Units

ATC’s dedication to quality shines through in every drive unit crafted entirely in-house. Each driver is designed to minimize distortion and maintain consistent performance at any volume.

SH25-76S ‘S-Spec’ Tweeter

• Neodymium motor capable of response beyond 25kHz
• Compact size enhances dispersion and mid-driver integration
• Dual-suspension system for refined coil and diaphragm control
• Coated fabric dome ensures smooth sound and low listening fatigue

SM75-150S ‘Superdome’ Mid-Range Driver

• Wide bandwidth spanning 380Hz to 3.5kHz
• High-power magnet and large voice coil for efficiency and low compression
• Resolves fine musical details while handling large dynamic peaks effortlessly

SB75-234SL ‘Super Linear’ Bass Driver

• Super Linear motor system reducing third harmonic distortion
• Optimized suspension for linear excursion with low distortion
• 3-inch (75mm) voice coil minimizes compression, ensuring consistent bass performance

Limited Anniversary Edition

The EL50 Anniversary is launching as a strictly limited edition—with only 50 pairs available. Each pair comes with a hardbound owner’s handbook chronicling ATC’s rich history, from its start in 1974 as a drive unit specialist to its current reputation as a world-class loudspeaker manufacturer.

After this exclusive run, the EL50 will continue as a regular production model, promising to keep the legacy alive well into the future.

Shipping Details

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

Availability and Pricing

• U.S. Availability: April 2026
• Retail Price: $99,999 USD per pair

The EL50 Anniversary is a testament to ATC’s relentless pursuit of high-fidelity sound and exquisite craftsmanship. Whether you’re an audiophile seeking your next prized speakers or a music lover who cherishes sonic detail, these speakers promise an enthralling experience.

“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.” – ATC

FAQ

• What makes the EL50 Anniversary’s amplifier unique?
  It features a proprietary 3-channel discrete Amp-Pack with individual toroidal transformers for each channel, leading to lower noise and distortion for exceptional sound clarity.
• How is the cabinet design beneficial for sound quality?
  Its curved laminated construction and elliptical shape reduce diffraction and coloration, improving imaging and frequency response.
• Are the drivers custom-made?
  Yes, all drive units are built in-house to ensure low distortion and consistent performance across all listening volumes.
• Is the EL50 Anniversary a limited edition?
  Initially, yes—only 50 pairs will be made as an exclusive run before it enters regular production.
• When will the EL50 Anniversary be available in the U.S.?
  It will be available starting April 2026.

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