# K903066: Amplaid 770 Admittance Meter

- Pathway: 510(k) (Traditional)
- Applicant: Amplus Corp.
- Decided: Oct 24, 1990 after 104 days
- Product code: ETY (Tester, Auditory Impedance)
- Device class: 2
- Regulation: 21 CFR 874.1090
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
3 later devices descend from it; 2 cite it directly.
0 of 4 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. FDA has not posted a summary or statement for it, so its predicates are not known.

## Most influential descendants
- K992370: Amplaid A724 and A728 (1999), 1 descendant of its own
- K031978: Amplaid A756 Screening Admittance Meter (2003), 0 descendants of its own
- K974235: Amplaid AM50 (1998), 0 descendants of its own

Source page: https://510kreport.com/device/K903066
Methodology: https://510kreport.com/methodology