Who makes Kirkland Signature Hearing Aids (KS4–KS10; line discontinued 2022)?
As of July 5, 2026, the manufacturer of Kirkland Signature Hearing Aids (KS4–KS10; line discontinued 2022) is Sonova, per on-label, first-party, or executive statement evidence.
The common claim
What most answers say — and what the evidence supports
Most top-ranking answers describe Kirkland Signature hearing aids as rebranded Phonak (Sonova) devices, and many still discuss them as if they were available. Both halves need correction: Sonova made only the final two generations (KS9, launched July 2019, and KS10, launched April 2021) — earlier generations rotated between Rexton/Sivantos (KS4, KS7, KS8) and GN ReSound (KS5, KS6), per hearing-industry trade press and FDA device listings — and Costco pulled the KS10 from sale in October 2022 over rechargeability problems. Sonova ended hearing aid sales to Costco the following month, no KS11 was ever released, and there has been no Kirkland Signature hearing aid since.
Evidence & sources
Every source is graded on the six-tier rubric and archived, so the citation holds even if the original moves or paywalls. The tier badge grades the source; the status grades our confidence in the maker.
Tier 4
"Sonova, the Switzerland-based parent group of Phonak, Unitron, and Hansaton, confirmed that it has been awarded the contract to supply Costco's Kirkland Signature 9.0 (KS9) hearing aids... It will be the first hearing aid that attributes Sonova as the manufacturer." Also recaps the full generational history: "Previously, Kirkland Signature hearing aids (models KS7 and KS8) were manufactured by Rexton, which is part of the Sivantos group, since 2016... Rexton subsequently supplied the early KS4 product line, and GN ReSound took over manufacturing the KS5 and KS6 lines, before Rexton regained the contract."
Tier 4
"The KS10 is manufactured by Sonova, the largest hearing aid manufacturing group in the world and the maker of Phonak and Unitron hearing aids. Sonova also produced the previous KS9 hearing aids which were launched in July 2019." The article reports the KS10 was introduced in April 2021 and that Costco stopped selling it in October 2022 amid rechargeability problems; it also speculates about a KS11 that never materialized.
Tier 4
"As first reported by HearingTracker in October, Costco discontinued the sale of its Sonova-manufactured Kirkland Signature 10.0 (KS10) hearing aid due to issues with device rechargeability." Documents that Sonova then ended hearing aid sales to Costco entirely in November 2022 (including Phonak-branded aids), closing out the Kirkland Signature era.
Tier 4
"Costco doesn't manufacture its Kirkland hearing aids. Instead, the retailer partners with a large hearing company called (most recently Sonova). Sonova's flagship brand is called Phonak, and a white-labeled version of the Phonak Paradise product is what Costco previously branded as Kirkland Signature 10.0." The April 2025 snapshot shows the KS11 still did not exist years after the KS10's fall-2022 discontinuation — the line was never revived.
Tier 6
FDA's device adverse-event database record lists Brand Name "KIRKLAND SIGNATURE 10.0 HEARING AID WITH TCOIL PREMIUM DIGITAL RECHARGEABLE" with Manufacturer (Section D) "KIRKLAND/PHONAK/SONOVA AG" — an FDA-hosted brand-to-manufacturer link, but graded tier 6 (not 3) because this particular MDR is a voluntary patient-filed report, so the manufacturer field is reporter-supplied rather than registry data. Included as corroboration alongside the tier-4 trade-press anchors; the report itself describes the KS10 rechargeability failure mode.
Manufacturer history
The change log is the product. Attributions go stale — most sites never notice when a supplier switches. We date every change, keep the old source, and log it.
| Period | Manufacturer | What the record says | Source |
|---|---|---|---|
| Present | SonovaCurrent | Current attribution — confirmed. See the evidence and fact sentence above. | Evidence ↑ |
| … → ~2013 | Rexton (Siemens, later Sivantos) | Per Hearing Review's 2019 recap of the program's history, Rexton supplied the early Kirkland Signature product line, including the KS4, before GN ReSound took over for the KS5 and KS6. Launch years for the earliest KS generations are not well documented in accessible sources. | Hearing Review ↗ |
| ~2013 → 2016 | GN ReSound (GN Hearing) | GN ReSound manufactured the KS5 and KS6 generations, per Hearing Review. The KS6 link is independently deterministic: FDA's device registration and listing database shows "Kirkland Signature 6" listed as a proprietary name by five GN entities (GN ReSound Malaysia, GN ReSound China, GN Hearing A/S, GN Hearing Care Corporation). | FDA (openFDA device registration & listing) ↗ |
| 2016 → 2019 | Sivantos (Rexton) | Sivantos, selling in Costco under its Rexton label, manufactured the KS7 (launched September 2016 at $1,699/pair) and the KS8 (launched early 2018). Sonova replaced Sivantos when the KS9 contract was awarded in July 2019. | Hearing Health & Technology Matters ↗ |
Frequently asked
Who made Kirkland Signature hearing aids for Costco?
Why were Kirkland Signature KS10 hearing aids discontinued?
Will there be a KS11? What replaced Kirkland hearing aids at Costco?
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