Datasheet — CA1/CA1 HF : Circum-Aural Headphone/Circum-Aural High-Frequency Audiometric Headphone
Features
- Sturdy and reliable over-ear headphones
- High-quality audio performance, specifically designed for hearing loss testing
- High Frequency (HF) available, frequency range 125 – 16,000 Hz
- Color-coded earcups for clear Left/Right identification
- Single-sided cable connection, length 2.5m
- Excellent passive attenuation for ambient noise
- Cushions, headband, and cable available as spare part for repair/refurbishment
- Full medical certification as Class 2a Medical Device
- Biocompatibility ISO 10993-1
- RoHS compatible, lead, nickel and latex free

Technical Datasheet
CA1 & CA1 HF Product Specifications
Related Standards: IEC-60645-1:2017, ANSI S3.6:2018 (R2023), ISO 389-5:2006, ISO 389-8:2004
Frequency Range CA1: 125 Hz – 8,000 Hz
Frequency Range CA1 HF: 125 Hz – 16,000 Hz
Output Level Range: −10 – 120 dB HL
Output Level Precision*: ±3 dB
Sensitivity*: 100 dB SPL @ 1kHz, 1mW
Distortion*: <2.5% at Recommended Max Levels
*At time of manufacturing · Copyright © Auditdata A/S. 2026/03