Repairs, Support, Downloads

User manuals:

SA-Series in-ear monitors – user manual

ERM-Series plig-in monitors – user manual

Instructions for replacing HearClear wax filters

CEP communication earphones – user manual

Norske bruksanvisninger -> se her

All international sales are considered final upon final order agreement and after payment is received. Our products are sold with a 2 year limited warranty (1 year for business customers). The warranty covers technical and functional production errors from the time of delivery. Damages from normal use, regular wear and tear e.g. cable breakage, wax or moisture damage, blown speakers etc. are not covered by the warranty. Hands-free cables are considered to be consumables and have a limited 6 month warranty.
After the original warranty has expired we offer 3 month warranty on repairs and parts.

Custom made in-ear monitors and hands-free kits are sold with a 1 month warranty on fit. Be aware that we might reject or demand new and/or better ear impressions if we consider the ones received not proper for further processing. This can be due to voids, improper fill, too short canal or similar shortcomings in the impression material. No warranty on fit for remake jobs on old IEMs.

We recommend to use a bite block when you get the ear impressions made. The impressions should be long enough to include the second ear canal bend, and completely fill the outer ear. On the outside the material should fill enough of the outer ear to leave a flat or a convex surface, without voids.

Prices for service & repair:

Remake/new shell for custom made hands-free kit (HF-Series): NOK 750,- per ear (ex. Vat)

Replacement of a Premium grade hands-free cable for the HF-Series: NOK 600,- (ex. Vat)

Remake/new shell for custom in-ear monitor (SA-Series): NOK 1150,- per ear (ex. Vat)

Replacement of a hardwired cable for in-ear monitors and plug-in monitors: NOK 500,- (ex. Vat)

Replacement cable (detachable) for in-ear monitors and plug-in monitors: NOK 320,- (ex. Vat)

Shipping repairs or remake orders:

1 – PS! Make sure that the shipment is marked with “earphones” or “samples” and with a total value including shipping cost (must be specified) of no more than NOK 200,- (~ 25 USD / ~ 20 EUR) – Shipments with a total value of more than NOK 200,- will not be accepted on delivery.

2 – Ship the order together with a note stating your name, address, phone/email and an error description to:

Company: Middelthon Innovasjon ENK
Attn: Alf J. Middelthon
Address: Storevigbakken 28 B
Zip: 4105
City: Joerpeland
Country: Norway
Phone: +47 40452250
Email: middelthoninnovasjon @