AKG HSC271 Closed-Back Broadcast Headset with Condenser Boom Microphone

AKG HSC271: One Headset for Monitoring and Talking Back

The AKG HSC271 is a wired professional headset that combines closed-back circumaural stereo headphones with a condenser microphone on a flexible boom, terminating in a single gold-plated 6-pin locking mini connector. Its whole design brief is the live communications position: a commentator, a camera operator or a talkback engineer needs to hear a feed and be heard on it, and needs both to happen without a second device on the desk. Supplied with the headset are a W44 foam windscreen for the boom capsule and velour earpads. One thing to plan for up front is that the connecting cable is not included, so a compatible headset lead has to be ordered alongside it.

The Condenser Boom Microphone and Where It Sits

Speech pickup comes from a condenser element carried on a flexible boom arm, and the choice of a condenser rather than a dynamic element is the point of this model. A condenser microphone works by measuring the changing capacitance between a thin diaphragm and a fixed backplate, which gives a lighter moving mass and a more detailed, intelligible reproduction of consonants than a moving-coil element can manage at the same size. Because the boom is flexible, the capsule can be set at a consistent distance and angle from the corner of the mouth and stay there through a whole shift, which is what keeps level and tone constant on a two-hour broadcast. Getting that placement right is worth a few minutes of experimenting on the first fitting, since a condenser is more sensitive to angle and distance than the dynamic-microphone version of this headset would be.

Two Automatic Mutes and Why They Matter On Air

Muting is mechanical and automatic on both sides of the headset. Raising the boom arm mutes the microphone, and lifting the headband off the head mutes the headphones, so the two most natural physical gestures an operator makes are the two mute commands. That design removes a whole class of live errors: an announcer who swings the boom up to cough or talk to a colleague is off-circuit without hunting for a switch, and a headset lifted off and hung on a console peg cannot suddenly feed monitor audio into an open microphone across the desk. Stage managers, camera operators and commentary teams working a busy intercom circuit gain the most from that, because the muting logic is muscle memory rather than something to remember under pressure.

Switchable Bass-Cut on the Microphone Path

A switchable bass-cut filter sits in the microphone path and can be engaged to minimize rumble and wind noise. Bass-cut, sometimes called a low-cut or high-pass filter, attenuates the lowest frequencies where speech carries almost no intelligibility but where microphone stands, air handling, crowd rumble and breath blasts put most of their energy. Engaging it at the headset means the unwanted energy never reaches the intercom or console channel at all, which preserves headroom in the mix-minus feed and keeps a gate or compressor downstream from being triggered by a gust. Sports commentators in an open press position and reporters working outdoors are the obvious users, with the supplied W44 foam windscreen handling the remaining close-range breath and plosive energy at the capsule itself.

Closed-Back Headphones Built on a Studio Platform

Headphone performance is derived from the K271 MKII closed-back studio headphone, with a frequency range of 20 Hz to 20 kHz, an impedance of 55 ohms, sensitivity of 104 dB SPL/V at 1 kHz and maximum input power of 200 mW. A studio-grade platform in a communications headset is unusual and genuinely useful, because a commentator monitoring a program feed and an audio operator listening for a fault both need to hear what is actually there rather than a thin intercom approximation of it. Closed-back circumaural earcups seal around the ear to attenuate ambient noise, which is what makes a headset usable in a stadium gantry, beside a crowd, or in a control room full of cooling fans, and the 200 mW rating provides headroom when a cue feed arrives hot. Replaceable velour earpads and a self-adjusting headband round out a design intended for multi-hour shifts and for units shared between operators.

Connection, the Required Cable and Who Should Buy It

Everything leaves the headset through one gold-plated 6-pin locking mini connector that carries the stereo headphone signal and the microphone signal together in a single locking termination. Choosing a headset cable separately is the correct way to read that: the lead is selected to match the destination equipment, whether that terminates in a stereo 1/4 in. jack for a console headphone output or in a pair of 3.5 mm jacks for a computer or portable device, and a damaged lead is replaced without retiring the headset. Because the condenser element needs to be powered from the equipment at the far end of that cable, the intercom, console or interface it plugs into should be confirmed as able to supply microphone powering before the headset is specified. Broadcast commentary positions, outside-broadcast trucks, interpretation booths, theater and event communications, and streaming hosts who want monitoring and a microphone in a single unit are the applications this headset was built to serve.