RTS PH-1 A4M Single-Sided Full Cushion Medium Weight Headset / Noise-Canceling Mic / A4M

Description

The PH-1 is a single-sided medium-weight headset designed for professional communication environments – it provides a comfortable fit and clear voice transmission. The headset combines foam-filled full cushions with a balanced acoustic voice path to reduce listener fatigue. It is built to integrate with standard intercom and broadcast panels using compatible connector options.

Key features include a dynamic noise-canceling microphone and an adjustable ball-joint boom – these allow precise mic placement and stable voice pickup in noisy environments. The full cushions are foam-filled to provide moderate isolation while remaining lightweight for long-wear comfort. The single-sided design keeps one ear free for ambient monitoring while delivering direct audio to the other ear.

Performance details include a speaker sensitivity of 95dB and a headset frequency response of 100 Hz – 10 kHz to ensure intelligible audio reproduction. The microphone has a frequency response of 200 Hz – 6 kHz, a sensitivity of -65, and a microphone impedance of 150. The overall headset impedance is 300 and the cord length is 1676.4 mm (5.5 ft), providing stable electrical and acoustic performance.

Connectivity options include multiple connector choices such as A4M, A4F, A5M and stripped wire terminations – the supplied model uses the A4M connector. These connector options enable compatibility with a wide range of intercom beltpacks and most RTS panels. The headset’s wiring and impedance are selected to match industry-standard intercom interfaces.

The PH-1 is well suited for broadcast, production, live events and intercom use where one-ear monitoring and clear speech intelligibility are required. It is appropriate for commentators who need to hear ambient cues while receiving program audio, and for technical crews who must communicate in noisy environments. The design supports extended wear during shifts due to its medium-weight construction and comfortable cushions.

Installation and daily use are straightforward – the adjustable ball-joint boom offers continuous mic positioning and the single-sided layout simplifies cable routing. The headset is constructed for repeated use with durable materials and serviceable cushions. Overall, the PH-1 balances comfort, clarity and compatibility for professional AV and broadcasting workflows.