Safety Information

ISOtunes® ORIGINAL 2.0 comes with 4 sets of TRILOGY™ foam eartips (XS,S,M,L) and 3 sets of
silicone eartips (S,M,L). Choose the size that fits most snugly in your ear canal. Remember, the snugger
the fit, the better the noise blocking. The silicone eartips are intended for use when NOT in noisy
situations.
ISOtunes® TRILOGY™ foam eartips have a threaded core and the sound port on the earbud is also
threaded.
1. Twist the foam eartip counterclockwise to remove and clockwise to place on a new foam eartip.
2. Carefully compress the foam eartip on the stem/sound port.
3. Insert the foam/eartip into your ear as deeply as is comfortable and hold for 5 seconds while the foam
expands.
4. Repeat with second eartip.
Hint: To open your ear canal wider, lift the top of your ear up and away from your head, as shown in
FIG1.
Introduction
Thank you for purchasing ISOtunes® ORIGINAL 2.0 Professional Noise Isolating headphones. These
headphones have been specifically designed for use in noisy environments – allowing you to block out
much of the surrounding noise so that you can listen to your music or talk on the phone with less
interruption. This product has been tested and meets the European Safety Standard EN352-2:2002 and
the ANSI & NIOSH standards for a hearing protector, with a Single Number Rating (SNR) of 36 dB and a
Noise Reduction Rating (NRR) of 27 dB. Full testing details are available in the Noise Attenuation section
of this booklet.
Noise
Attenuation
APPROVAL: ISOtunes® ORIGINAL 2.0 is tested and approved in accordance with ANSI S3.19-1974
Specifications and the European Safety Standard EN 352-2:2002.
ANSI
S3.19-1974
The level of noise entering a person’s ear, when ISOtunes® ORIGINAL 2.0 headphones are worn as
directed, is closely approximated by the difference between the A-weighted environmental noise level
and the Noise Reduction Rating (NRR). Improper fit of this device will reduce its effectiveness in
attenuating noise. Consult the enclosed instructions for proper fitting.
A1: Frequency (Hz)
A2: Mean Attenuation (dB)
A3: Standard Deviation (dB)
Example:
1. The surrounding noise level measured at the ear is 100 dB.