Williams AV Folding Mono Headphones HED 027, Adult

Williams Sound HED 027 are heavy-duty, adult-size folding mono headphones built for extended use with Williams AV receivers and Pocketalkers.

These wired mono headphones combine a rugged folding frame, replaceable ear pads and a long 39-inch cord to deliver reliable single-ear listening for tours, assistive-listening setups and personal audio. Designed and tested for compatibility with Williams AV systems, the HED 027 balances durability and comfort with a 40 mm driver and 100 mW maximum input for clear audio when used with low- to mild-gain applications.

How durable and portable are these headphones for everyday field use?

The HED 027 uses a heavy-duty hinge and a fold-flat design so it tucks easily into a bag without compromising sturdiness. The frame is built to withstand repeated folding and handling typical in classroom, tour-guide or corporate AV environments.

• Folding headband for compact transport
• Rugged construction rated for repeated use
• Adult-size fit to remain stable during activity
• Replaceable ear-pads (EAR 035) to extend service life

Will these work with Williams AV receivers and Pocketalkers?

Yes — the HED 027 has been quality-tested for compatibility with Williams AV receivers and Pocketalker devices, ensuring reliable connection and consistent audio performance in supported systems. The standard 3.5 mm plug makes hooking up straightforward.

• 3.5 mm stereo-style plug configured for mono use
• Tested and approved by Williams AV for system compatibility
• Consistent impedance and sensitivity for paired equipment
• Works out of the box with Williams AV assistive listening gear

What are the comfort and audio characteristics for long sessions?

These headphones are sized for adults with a single-ear (mono) design that helps maintain situational awareness. The 40 mm driver offers clear, focused sound suited to mild and low gain listening needs, while soft replaceable ear-pads keep wear comfortable over extended periods.

• Adult-size band for secure, comfortable fit
• 40 mm driver tuned for spoken word clarity
• Mono output to one ear for environmental awareness
• Replaceable EAR 035 ear-pads for hygiene and comfort

How long is the cord and what power levels are supported?

The HED 027 includes a 39-inch (approximately 1 meter) cord that gives room to move when connected to a receiver or Pocketalker. It supports up to 100 mW maximum power input, appropriate for assistive-listening devices and personal audio sources within recommended gain settings.

• 39" cord for flexible positioning with receivers
• 100 mW max input specification
• 3.5 mm plug for broad device compatibility
• Mono configuration minimizes crosstalk and complexity

Who is this for? If you need a dependable single-ear headphone for guided tours, AV systems, classroom listening, or personal assistive-listening use, the Williams Sound HED 027 offers a durable, comfortable solution that pairs natively with Williams AV receivers and Pocketalkers. It’s a sensible choice for institutions and individuals who prioritize rugged portability, straightforward compatibility and serviceable components like replaceable EAR 035 ear-pads.