Replacement 2.0M Astro A40 TR Aux Cable by ienza&reg; This cable provides audio and voice communication when used with a MixAmp Pro TR and mobile devices (or similar electronic devices with combined mic and headphone jack). Specifications: 3.5mm 4-pole male to 3.5mm 4-pole male. Approx 2.0M (approx. 6 ft) IMPORTANT NOTE: This is not an "A40 TR Inline Mute Cable" which is used connect the A40 TR Headset with appropriate devices. Please see ASIN B01BG78B1U. ienza is a registered trademark. ienza products are developed as cost-effective alternatives to OEM parts. They are not necessarily endorsed by the OEMs.