OLLO Audio S5X 1.1 – Calibrated Open-Back Studio Headphones

The S5X 1.1 takes immersive audio monitoring to the next level with a flat, calibrated frequency response tailored for both stereo and Atmos mixing. Featuring handcrafted wooden earcups, precision drivers, and a detachable calibration plugin, they deliver true translation from headphones to speakers.

Key Features

• 50 mm dynamic drivers: Matched left/right transducers with ±1 dB accuracy deliver consistent, spatially accurate sound.
• Flat tuning with USC calibration: Room-independent target response, refined via Unit-Specific Calibration for ~1 dB deviation from reference.
• Immersive spatial translation: Tuned for HRTF and Dolby Atmos rendering, ensuring consistent binaural-to-speaker mix translation.
• Premium & serviceable build: American walnut earcups, stainless spring steel headband, and replaceable parts—cables, pads, and headband are home-servicable.
• Comfort & acoustic design: Hybrid artificial leather and velour earpads with acoustic foam and air-pressure equalisation—optimized for long sessions and smooth frequency response.
• Detachable cable with locking jack: OFC-core braided silicone cable with ball-lock 2.5 mm plug, includes 3.5 mm to 6.3 mm adapter.
• Optional calibration plugin: USC plugin for AU/VST3 and real-time correction; compatible with Realphones, Waves NX, and third-party EQ tools.
• Open-back design: Natural soundstage with conical, angled driver placement for highly accurate spatial imaging.

Customer Benefits

Whether you're mixing immersive or stereo content, the S5X 1.1 gives you confidence that what you hear is objective and translates accurately across systems. Its ergonomic build and replaceable components make it a long-term studio companion.

Quick Specs

• Drivers: 50 mm dynamic (PET 25 µm membrane, dual-layer coil, neodymium magnets)
• Impedance: ~50 Ω—easy to drive, even by smart devices
• Sensitivity: 106 dB SPL @ 1 kHz RMS @ 0 dBu
• Frequency Range: 15 Hz – 22 kHz (±1 dB, with calibration)
• Earpads: Ø95 mm (outer), Ø57.5 mm (inner), depth 20 mm; perforated leather/velour with acoustic foam
• Weight: 420 g
• Headband: Stainless spring steel with adjustable artificial leather strap
• Calibration: Includes USC plugin, calibration data (XPS), compatibility with Realphones/Waves NX and third-party EQ exports

What’s in the Box

• OLLO Audio S5X 1.1 headphones
• Detachable cable + 3.5 mm to 6.3 mm adapter
• Quick start guide and calibration certificate with USC access
• Carrying pouch

Use Cases / Ideal For

Made for immersive audio engineers and producers who need accurate binaural-to-speaker mix translation. These headphones are perfect for Atmos scoring, mastering, and any situation where consistent, neutral listening is essential.

Pros & Cons

✅ Pros:

• Exceptionally flat response with calibration—translates mixes reliably across setups
• Immersive spatial design supports HRTF and Atmos workflows
• User-serviceable build with premium materials and long-term durability

⚠️ Cons:

• Open-back design limits isolation—best suited for quiet environments
• Five-figure calibration setup may seem overkill for casual listening

The OLLO Audio S5X 1.1 combines pinpoint reference accuracy with stylish craftsmanship—designed to make your mixes translate, whether through headphones or speakers, in two-channel or immersive environments.