510(k) · Cleared
ClearedAmplaid A311 Series
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Amplifon S.P.A. · EWO Audiometer
Cleared on Jan 12, 1999 as substantially equivalent to K880059 (Amplus Corp., 1988) and 2 other predicates after an 83-day review. Its family tree reaches back 2 generations to 1988.
- Decided
- Jan 12, 1999
- Review
- 83 days
- Class
- Class II
- Product code
- EWO
- Recalls
- None
- Predicates
- 3
Its longest line of descent runs back 2 generations to K880059 (1988). 3 ancestors in all. No later device cites it as a predicate yet.
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −2 | K880059 | Amplaid 309 Clinical Audiometer | Amplus Corp. | 1988 | — |
| −1 | K971747 | Amplaid 460 | Amplifon S.P.A. | 1997 | — |
| 0 (this device) | K983712 | Amplaid A311 Series | Amplifon S.P.A. | 1999 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1989 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in EWO? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
Top candidate predicates for a new EWO device
- #1 K234095 OtoNova/OtoNova Proscore 9.3 · 7 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (3)
Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.
| Type | Number | Device | Decided |
|---|---|---|---|
| * | K880059 | Amplaid 309 Clinical AudiometerSummary page 1…EWO Common/Usual Name: Clinical Audiometer . Equivalent legally marketed devices This product is similar in design and function to the Amplaid 309 Clinical Audiometer (K880059), Amplaid 308 Clinical Audiometer (K891988), and Amplaid A460 (K971747) Indications for Use (intended use) The Amplaid A311 Seri… | 1988 |
| * | K891988 | Amplaid A308 Clinical AudiometerSummary page 1…. Equivalent legally marketed devices This product is similar in design and function to the Amplaid 309 Clinical Audiometer (K880059), Amplaid 308 Clinical Audiometer (K891988), and Amplaid A460 (K971747) Indications for Use (intended use) The Amplaid A311 Series is a clinical diagnostic audiometer whic… | 1989 |
| * | K971747 | Amplaid 460Summary page 1…ted devices This product is similar in design and function to the Amplaid 309 Clinical Audiometer (K880059), Amplaid 308 Clinical Audiometer (K891988), and Amplaid A460 (K971747) Indications for Use (intended use) The Amplaid A311 Series is a clinical diagnostic audiometer which can perform all audiometri… | 1997 |
What descends from it?
No later submission names this one as a predicate yet.
Has anything in its family been recalled? (0 Class I)
No FDA recall names this device.
No ancestor or descendant has a Class I recall.
What does this lineage say?
- The line of descent spans 11 years and passes through 2 companies; a new generation was cleared every 9.4 years on median.
- None of the 3 ancestors has a recall.
- 1 other device also cites its predicate K880059.
How does its category compare?
All EWO devicesEWO Audiometer: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · EWO
2in 2024
2026 to Oct 25, outlined.
Median 510(k) review, days · EWO
173in 2015
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · EWO
4in 2023
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · EWO
13in 2025
MAUDE reports naming product code EWO, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 5 | 69 | 0 | 1 |
| 2008 | 1 | — | 1 | 1 |
| 2009 | 2 | — | 0 | 1 |
| 2010 | 2 | — | 0 | 4 |
| 2011 | 3 | 151 | 0 | 2 |
| 2012 | 4 | 137 | 0 | 0 |
| 2013 | 2 | — | 0 | 0 |
| 2014 | 1 | — | 0 | 0 |
| 2015 | 4 | 173 | 0 | 1 |
| 2016 | 0 | — | 0 | 0 |
| 2017 | 2 | — | 0 | 0 |
| 2018 | 2 | — | 0 | 0 |
| 2019 | 1 | — | 0 | 6 |
| 2020 | 0 | — | 0 | 7 |
| 2021 | 0 | — | 0 | 3 |
| 2022 | 1 | — | 0 | 6 |
| 2023 | 1 | — | 4 | 3 |
| 2024 | 2 | — | 0 | 2 |
| 2025 | 0 | — | 0 | 13 |
| 2026 | 0 | — | 0 | — |
What is it indicated for?
The Amplaid A311 Series is a two channel clinical diagnostic audiometer which can perform all audiometric tests normally performed in a clinical situation. It is intended for use by a qualified/trained audiologist on both adult and pediatric subjects for measurement and diagnosis of various types of hearing losses.
Indications for use read by OCR from a scanned FDA summary, so letters may be misread. Check the PDF before quoting it.
https://510kreport.com/device/K983712 · printed Nov 5, 2026
Cite this page
510(k) Report. “K983712: Amplaid A311 Series.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K983712
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026