AKG 2955M91120 - Complete Microphone Boom Arm (HSC) for AKG HSC271 Headphones

AKG 2955M91120 - Complete Microphone Boom Arm (HSC) for AKG HSC271 Headphones

The AKG reference 2955M91120 is the original factory complete microphone arm ( Mic arm HCC/HSC complete ) for the AKG HSC271 headsets . This service assembly replaces the stock arm/capsule of the headset, restoring the swivel mechanics, automatic mute when lifting the arm and the pickup quality of your condenser microphone . Being an OEM replacement documented by AKG, it ensures compatibility, correct fit and wiring without modifications.

The boom maintains the design of the HSC271: up to 270° rotation for left or right placement, a flexible gooseneck for fine-tuning, and an integrated ON/MUTE switch that mutes the microphone when lifted—ideal for radio, broadcast, and production where fast, reliable operation is required. It's the recommended option for maintenance in rental parks, studios, and corporate environments.

Main features

• Official AKG replacement microphone boom arm set for HSC271 (condenser).
• Identical operation to the original: automatic ON/MUTE when moving the arm and 270° rotation for left/right use.
• OEM fit and wiring: lengths, internal connectors and fixings as per AKG service specification.
• Professional installation: designed for service installation according to AKG documentation.

Product benefits

• Restores voice pickup and microphone control behavior to factory settings.
• Less downtime: direct replacement of the complete assembly without improvised adjustments.
• Safe operation: automatic mute when you raise your arm to prevent noise or accidental entry.

Compatibility and notes

• Compatible: AKG HSC271 (over-ear headset with condenser microphone).
• Not compatible: HSD271 (dynamic microphone version), which uses the 2955M91110 boom arm.
• Installation: Requires following the HSC271 service manual; recommended for a qualified technician.
• Trade name: “Mic arm HCC complete / HSC Microphone boom assy”.

Frequently Asked Questions

• Does it include hardware or other headset parts? It's the microphone boom assembly . Any additional hardware or parts are reused or ordered according to the parts list.
• Does it work for HSC171? No. The HSC171 has a specific arm ( 2955M91140 depending on the service).
• Does it retain the automatic mute? Yes. The tonearm features the HSC series' built-in on/mute switch.

Description for projects

AKG 2955M91120 Complete Microphone Arm for HSC271 ; OEM assembly with condenser microphone, 270° swivel for left/right mounting and automatic ON/MUTE switching ; replacement part documented in AKG service manual; not compatible with HSD271 (uses 2955M91110) or HSC171 (uses 2955M91140).