CrosA, CrosB, CrosC: In CROS A and CROS B, the canal portion is built with an extension of plastic finished down as close to the tubing size as possible. CROS C combines skeleton design with a length of tubing directed into the center of the canal. The tubing is then cut according to the impairment.

Free Field: The Free Field mold is the predecessor of the Janssen. Non-occluding earmolds present certain fitting restrictions. Since there is no seal, there is always the possibility of increased incidence of feedback.

Advanced design free field: A Microsonic innovation, the Advanced Design Free Field was developed to assist dispensers in expanding the applications of non-occluded molds without encountering acoustic feedback.

Canal-Lok Advanced Design Free Field: The Advanced Design Free Field earmolds are also available in a Canal-Lok style. Acoustically they are identical to advanced design free field A, B and C.

Janssen Mold: The Janssen mold is named after the dispenser who invented it and incorporates the acoustic benefits of the Free Field style and the retention benefits of a CROS style mold. It differs in that the canal portion of the finished mold runs along the top of the ear canal.

ER-A, ER-B: The Microsonic "ER" Extended Range earmolds (Similar to Janssen) The Microsonic "ER" extended range earmolds provide two significant performance improvements when compared with a "tube-only" fitting:

1. The in-situ response curve is greatly smoothed in the range between 2 KHz and 5KHz, and
2. The in-situ response is greatly enhanced between 5 KHz and approximately 9KHz.

Lybarger Dual Diameter earmold system: Lybarger's Dual Diameter System employs a center section of 1/32" tubing in a non-occluding earmold to produce a resonator that provides an average of 12dB additional gain in the range from 4000 to 7000 Hz. This configuration is designed for losses that are normal out to 1500-2000 Hz and then drop of sharply.

1.5 LP earmold: The use of a 1.5 LP earmold more effectively controls the insertion depth than a tube fitting. The 1.5 LP earmold is basically like the Free Field or Janssen style earmolds except that is bored to 0.86mm as shown in the illustration and Tinnitus Mold tubing is inserted a minimum of 5mm.

Tinnitus Mold: This style of mold was designed for the American Tinnitus Association for use with tinnitus maskers. The mold has no canal and the tube entrance is near the crus.

Avance Mold: Used with ReSound's Avance high-frequency-emphasis hearing instrument, this earmold employs proprietary small-diameter rigid tubing and a stepped-bore sound channel in conjunction with a very large.

Custom Shells for in -office ITE assembly: For the dispenser who is specially trained to assemble ITE aids in the office, Microsonic offers a full line of custom shells for assembly of ITE aids.

You can find detailed information in the new Custom Earmold Manual!