The Kirkland Signature KS 9.0 is a premium Receiver-in-Canal (RIC) hearing aid sold as a matched pair in silver, offering professional-grade hearing assistance at an exceptional value. Manufactured by Sonova, the parent company of Phonak, the KS 9.0 brings the same underlying platform as leading hearing aid brands to Costco members at a fraction of the typical cost. The pair is fitted with a size 312 zinc-air battery and requires a Costco Hearing Center fitting appointment.

The KS 9.0 features 20 fine-tuning channels, 9 automatic programs, and 3 manual programs to adapt to a wide variety of listening environments. It leverages Sonova's SWORD (Sonova Wireless One Radio Digital) chip for Made for All (MFA) universal Bluetooth streaming, enabling direct wireless audio streaming and hands-free phone calls with both iPhone and Android smartphones. Binaural beamforming and binaural signal processing work together to enhance speech clarity in challenging noise environments. The hearing aids are compatible with the myPhonak app, which allows remote adjustment of settings, tinnitus masking support, and personalized noise cancellation from a smartphone. Optional accessories include a TV Connector for wireless TV audio streaming, a PartnerMic lapel microphone, and a remote control with large tactile buttons. The pair comes with four receiver power levels, making it suitable for mild to moderately severe hearing loss.