# Marpac, Inc.

- Location (FDA's records): Mchenry, IL
- FDA decisions: 3 (1980–2004): 3 510(k) clearances
- Product codes: KLW (2), JOH (1)
- Predicates its devices cite: 1 (0 its own); citations of its devices by later devices: 0 (0 its own)
- Recalls linked to its devices: 0 (0 Class I)
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Firms whose devices it cites most
- Passy & Passy, Inc.: 1 (https://510kreport.com/company/passy-passy)

## Recent decisions
- K041485: Marpac Messenger Model #501 (Aug 2, 2004)
- K940567: Model#1550 Marsona (R) Tinnitus Masker (Jul 6, 1994)
- K802234: Bedside Tinnitus Masker #1500 (Oct 10, 1980)

Source page: https://510kreport.com/company/marpac