Regardless of the type of musician you are….even singers love Earasers.

Tip on sizes: 75% of men use Medium (we are talking full grown, "I got my man body now!" type)

75% of women use Small

75% of young adults use Small

Most people already know if they have small ears due to their experience with other earbuds. Don't worry, there is some definite overlap in the sizes. If you guess wrong, you can always exchange them within 30 days. Or, they make great fishing lures! Seriously.

If you think you have tight ear canals, then go for the small. If you have been practicing ear canal stretching just for this moment, and you are sure your ears can park a mini-van and a drive-in speaker on the side (remember those), then you might belong to our 1% LARGE club. We rarely see them, but we know you are out there!

Funny thing is, the size of the external ear (the pinnae if you keep a dictionary handy) rarely has anything to do with the size of the opening where these bad boyz go. So, don't look at the outside. Take a look at our sizing pictures, take a picture of your own ear, you know where the oval shadow shows up (and not where you keep those spare potatoes) and have someone help you determine what size you really are. It's great fun for the whole family, and the bridge club too!

• AUDITORY SYSTEMS LABORATORY, HEARING PROTECTION DEVICE , ATTENUATION TEST REPORT
• AUDITORY SYSTEMS LABORATORY GRADO DEPT. OF INDUSTRIAL & SYSTEMS ENGINEERING
• Dr. John G. Casali, Professor and Director COLLEGE OF ENGINEERING
• VIRGINIA POLYTECHNIC INSTITUTE & STATE UNIVERSITY
• Facsimile: (540) 231-3322 Blacksburg, Virginia 24061
• Test Report Date: August 6, 2012
• Client: Persona Medical
• 170 N. Cypress Way
• Casselberry, FL 32707
• Test Report Number: VTEA-8/06/12-12HP-P
• The client may not use this report to claim product endorsement by Virginia Polytechnic Institute
• and State University (Virginia Tech).
• This report may be reproduced only in its entirety. It may not be reprinted for use in advertising
• copy.
• Copyright © by Auditory Systems Laboratory, Virginia Tech (John G. Casali), 2012. All rights reserved.
• Page 1 of 4
• VIRGINIA TECH AUDITORY SYSTEMS LABORATORY
• HEARING PROTECTOR ATTENUATION TEST REPORT*
• HEARING PROTECTOR: earasers PROTECTOR TYPE: earplug
• High Fidelity Ear Plugs
• MANUFACTURER: PERSONA MEDICAL TEST DATE: 07/26/12 - 08/03/12
• TEST STANDARD USED: ANSI S3.19 - 1974 FITTING METHOD: Experimenter Fit5
• NO. OF SAMPLES TESTED: 10 pairs NO. & SEX OF SUBJECTS TESTED: 5 M, 5 F
• SUBJECT AGE RANGE/MEAN: 26 - 43 yrs; 32.4 yrs HEADBAND FORCE: N/A
• TEST POSITION: N/A
• COMMENTS:
• 1) A new pair of earplugs was fit for each subject. The experimenter selected the appropriate size, from
• the 2 sizes provided.
• 2) All subjects met all requirements of the applicable standard.
• TESTER: Kichol Lee 8/06/12
• Name Signature Date
• APPROVED John G. Casali 8/06/12
• SIGNATORY: Name Signature Date
• NOISE-REDUCTION RATING (NRR) (per NIOSH, http://www2a.cdc.gov/hp-devices/useHPDC.html): -5
• (calculations on page 3)
• ATTENUATION MEANS AND STANDARD DEVIATIONS (from 30 trials)
• 1/3 octave band center (Hz) 125 250 500 1000 2000 3150 4000 6300 8000
• mean attenuation (dB) 2.7 3.2 1.2 6.7 14.9 19.2 16.7 14.8 11.0
• standard deviation (dB) 3.5 3.1 6.5 4.2 5.3 4.0 3.7 4.8 3.8
• *Test report data relate only to those protector units and subject sample tested. The client may not use
• this report to claim product endorsement by Virginia Tech.
• For labeling purposes, only the following statement may be used in regard to testing in the Virginia Tech
• facility; no other references to the university or to personnel may be used.
• "These attenuation data were obtained in accordance with ANSI Standard S3.19-1974 in an
• independent university testing laboratory at Virginia Tech.”
• Page 2 of 4
• VIRGINIA TECH AUDITORY SYSTEMS LABORATORY
• HEARING PROTECTOR ATTENUATION TEST REPORT
• PROCEDURES USED
• a) Test subjects were randomly selected from a pool of qualified listeners maintained by the Auditory
• Systems Laboratory. All listeners were empirically qualified as per the requirements of ANSI S3.19-
• 19741
• or ANSI S12.6-1997(R2002)3
• b) Where ANSI S3.19-19741
• (2) of the standard, as per EPA (1990)5
• method, Method A (experimenter-supervised fit in section 8 of the standard) or Method B (subject fit in
• section 9 of the standard) was used, as requested by the client and as indicated on page 1 of this
• report.
• c) Room ambient noise levels were continuously monitored during the tests using a real-time spectrum
• analyzer to verify that allowable levels of the standards1,3 were not exceeded during threshold
• determination.
• d) The psychophysical procedure used in the tests was Békésy tracking, presented and scored on-line by
• computer. The scoring criteria programmed on the computer met the requirements of section 11.2 of
• ANSI S12.6-1997(R2002)3
• appears in Casali, Robinson and Hankins (2000a, 2000b)2,4.
• e) Where the protector under test was an earmuff or semi-insert device, headband compression force
• values were obtained from the test samples before attenuation testing commenced. Measurements
• were arithmetically averaged across the samples and the result (in Newtons, N) reported on page 1 of
• this report. The measurements were obtained using a Headband Force Rig Model 3.02.B
• manufactured by INSPEC Laboratories, Ltd, Manchester, England. The force measurements were
• obtained at a separation of 14.35 cm and a 13.08 cm headband height for tests conducted under
• S3.19-19741
• S12.6-1997(R2002)3
• , according to the particular standard specified for testing.
• was the test method, experimenter-fit was used, according to section 3.3.3.1
• requirements. Where ANSI S12.6-1997(R2002)3
• was the test
• . Detail concerning the implementation of this psychophysical procedure
• and at a separation of 145 mm and a 130 mm headband height for tests conducted under
• .
• REFERENCES CITED
• ANSI S3.19-1974. Method for the measurement of real-ear protection of hearing protectors and physical
• 1
• attenuation of earmuffs. New York, NY: American National Standards Institute, 1974.
• Casali, J. G., Robinson, G. S. and Hankins, S. E. (2000a). A reverberant computer-controlled facility for
• 2
• hearing protection research and attenuation testing: Verification re ANSI S3.19-1974 (Report No.
• 20002). Blacksburg, VA: Virginia Tech, Department of Industrial and Systems Engineering.
• ANSI S12.6-1997(R2002). Methods for the measurement of the real-ear attenuation of hearing
• 3
• protectors. New York, NY: American National Standards Institute, 1997.
• Casali, J. G., Robinson, G. S. and Hankins, S. E. (2000b). A computer-controlled facility for hearing
• 4
• protection research and attenuation testing: Verification re ANSI S12.6-1997 (Report No. 20003).
• Blacksburg, VA: Virginia Tech, Department of Industrial and Systems Engineering.
• 5
• Environmental Protection Agency (EPA). Product noise labeling. Code of Federal Regulations, 40 CFR
• Part 211, 128-144, July 1, 1990. (Requires ANSI S3.19-1974 and "Experimenter-Fit" protocol of section
• 3.3.3.1 (2).)
• Page 3 of 4
• HEARING PROTECTOR: earasers High Fidelity Ear Plugs
• NOISE REDUCTION RATING (NRR) CALCULATION (per EPA,1990)
• 1. assumed pink 100.0 100.0 100.0 100.0 100.0 100.0 100.0
• noise (dB) †
• 2. C-weighting -0.2 0.0 0.0 0.0 -0.2 -0.8 -3.0
• corrections (dB) †
• 3. unprotected ear 99.8 100.0 100.0 100.0 99.8 99.2 97.0 107.9 Logarithmic
• C-weighted level (dB) †
• 4. A-weighted -16.1 -8.6 -3.2 0.0 1.2 1.0 -1.1
• corrections (dB) †
• 5. unprotected ear 83.9 91.4 96.8 100.0 101.2 101.0 98.9
• A-weighted level (dB)
• (step 1 + step 4) †
• 6. mean attenuation 2.7 3.2 1.2 6.7 14.9 18.0 12.9
• at frequency (dB)*
• 7. standard deviation at 7.0 6.2 13.0 8.4 10.6 7.7 8.6
• frequency (x2) (dB)*
• 8. protected ear 88.2 94.4 108.6 101.7 96.9 90.7 94.6 110.0 Logarithmic
• A-weighted sound Sum
• levels (dB)
• (step 5-step 6+step 7)
• 9. NRR = (step 3 log sum)-(step 8 log sum)-(3dB correction factor)= -5.1
• 1/3 octave band
• center (Hz) 125 250 500 1000 2000 4000 8000
• Sum
• NRR = -5
• Fitting Procedure: Experimenter-Fit
• † All values/calculations in rows 1-5 are from EPA (1990)
• * 4000 Hz values are mean of 3150 Hz and 4000 Hz data.
• 8000 Hz values are mean of 6300 Hz and 8000 Hz data
• FREQUENCY (Hz) 125 250 500 1000 2000 3150 4000 6300 8000
• attenuation mean 2.7 3.2 1.2 6.7 14.9 19.2 16.7 14.8 11.0
• attenuation std. dev. 3.5 3.1 6.5 4.2 5.3 4.0 3.7 4.8 3.8
• Page 4 of 4
• HEARING PROTECTOR: earasers High Fidelity Ear Plugs
• ATTENUATION DATA (in dB) BY TRIAL BY INDIVIDUAL SUBJECT
• 1/3 octave band center (Hz)
• subject trial 125 250 500 1000 2000 3150 4000 6300 8000
• 1 1 -0.2 -0.7 2.0 7.2 14.2 22.0 17.1 15.1 10.7
• 1 2 0.8 2.5 2.1 10.6 15.4 18.5 20.3 16.4 13.0
• 1 3 0.6 1.5 1.8 9.8 18.5 25.5 17.6 17.3 13.9
• 2 1 1.3 2.2 7.8 10.2 20.3 20.0 19.6 19.3 11.4
• 2 2 6.0 2.0 5.6 11.5 20.3 20.8 19.5 20.6 12.9
• 2 3 6.7 9.1 7.3 10.0 21.7 22.0 18.7 21.0 15.6
• 3 1 -0.3 0.5 2.5 4.5 12.1 16.3 15.0 11.0 3.5
• 3 2 3.4 4.8 7.5 7.0 17.5 21.7 19.1 16.0 10.2
• 3 3 0.4 3.9 2.1 6.5 17.1 20.3 15.2 7.9 6.5
• 4 1 8.4 5.7 3.8 7.9 21.2 23.8 20.7 20.7 14.0
• 4 2 5.7 4.5 2.8 5.8 22.2 24.5 20.2 14.3 9.0
• 4 3 4.9 7.4 2.0 9.6 16.8 24.0 17.0 17.0 11.6
• 5 1 1.3 0.8 8.3 0.5 8.6 13.3 8.8 11.3 9.8
• 5 2 0.1 -1.4 5.0 0.1 6.3 14.9 12.8 10.5 5.3
• 5 3 3.6 0.0 3.2 7.0 13.7 16.6 12.8 9.1 12.0
• 6 1 3.9 7.4 4.9 9.2 15.8 15.8 13.3 14.2 15.5
• 6 2 5.0 8.9 2.8 7.9 16.3 17.0 6.9 14.7 12.2
• 6 3 6.6 5.6 0.8 8.0 11.3 12.0 10.6 13.1 10.4
• 7 1 -1.0 3.4 2.3 -0.4 11.2 14.2 19.3 7.7 8.8
• 7 2 -1.8 2.3 -1.9 2.0 14.3 18.6 18.5 8.0 3.8
• 7 3 0.7 4.2 2.2 6.5 18.8 15.1 17.9 6.1 5.3
• 8 1 7.0 -1.3 -1.0 10.9 18.2 18.6 20.5 17.2 11.5
• 8 2 6.1 6.0 4.7 12.2 15.6 25.9 21.8 23.0 14.6
• 8 3 7.0 4.5 2.7 14.7 14.4 21.4 21.7 22.4 16.1
• 9 1 -1.2 2.9 -4.7 0.9 5.2 10.5 15.8 13.4 7.0
• 9 2 -0.3 3.9 3.1 0.1 5.7 16.7 14.7 17.0 10.0
• 9 3 10.3 7.0 2.5 9.6 11.3 21.2 16.3 12.2 9.5
• 10 1 -1.8 -2.4 -16.5 1.0 9.1 22.3 16.5 14.4 20.3
• 10 2 -1.5 -0.4 -20.4 6.6 25.5 22.2 18.4 22.4 13.7
• 10 3 0.3 1.5 -10.8 2.3 7.4 19.0 13.9 9.9 11.3
• attenuation mean 2.7 3.2 1.2 6.7 14.9 19.2 16.7 14.8 11.0
• attenuation std. dev. 3.5 3.1 6.5 4.2 5.3 4.0 3.7 4.8 3.8

Guarantee & Warrantee

Limited Warranty
Return for Replacement Policy

In some rare cases, should your product show signs of a manufacturing defect, please contact Persona Medical/Earasers (407) 339-2422 within one year of original purchase, to obtain a Return Merchandise Authorization” (RMA) Number.

You will need to include the following with your merchandise return:

* The RMA # you received from us
* The original receipt with “Date of Purchase” circled
* Written explanation of the defect
* Payment of $10 for shipping & handling (this may increase depending on your location).
* We highly recommend you place shipping insurance on your package.

We will replace any manufacturing defect with new product.

Note: Warranty is void if the product is damaged, or becomes damaged, due to inappropriate use.

Re-Sizing Policy

Should you feel you have purchased an incorrect size for your ear, simply contact us within 30 days of the Original Purchase date to obtain a 'Return Merchandise Authorization' (RMA) Number. You will need to include the following with your merchandise return:

* The RMA # you received from us.

* The original receipt with 'Date of Purchase” circled

* Your requested exchange size.

* Payment of $10 for shipping & handling (this may increase depending on your location).

Note: The product exchange for size is complimentary, if requested within the 30 days of proof of purchase and meets the criteria mentioned above.


Note: Warranty is void if the product is damaged, or becomes damaged, due to inappropriate use.