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Amazon.com > Electronics > Headphones, Earbuds & Accessories > Headphones & Earbuds > On-Ear Headphones
Sennheiser Supplemental HiFi Wireless Headphone for RS-120 System
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From Sennheiser Consumer Audio
This report was last updated 12/3/2020.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Info:
Note: While Amazon.com claims 1,360 Ratings, we counted 870 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Warn Overall Grade
FAIL Unverified Purchases
FAIL Suspicious Reviewers
FAIL Overlapping Review History
WARN Deleted Reviews
WARN Brand Repeats
PASS Rating Trend
PASS Word Count Comparison
PASS Phrase Repetition
PASS Reviewer Participation
PASS Reviewer Ease
PASS Incentivized Reviews
Most Trusted Reviews
Very good sound quality and very light. Instead of on/off ... [Go to full review]
Jul 15, 2020
100%
TRUST
TRUST
- Verified Purchaser
- Easy Grader (avg. rating: 4.8)
Least Trusted Reviews
These headphones work very well for me. I have severe ... [Go to full review]
Jul 13, 2015
0%
TRUST
TRUST
- Unverified Purchaser
- Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
- Brand Repeater (2 of 23 reviews for this brand; avg rating: 4.0)
- Overlapping Review History: reviewed 1 of 9 top products
- Critical Reviewer (avg. rating: 3.6)
Analysis Details
Fail Unverified Purchases
82 of the 870 total reviews for this product are unverified purchases. The unverified purchasers have rated this product an average of 3.6 while the verified purchasers have rated this product an average of 4.4. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.
Fail Suspicious Reviewers
One-Hit Wonders
45 of the 870 reviewers have only reviewed this product. The One-Hit Wonders have rated this product an average of 3.6 while the reviewers who have posted more than one review have rated this product an average of 4.3. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Take-Back Reviewers
343 of the 870 reviewers have had at least one of their past reviews for another product deleted. The Take-Back Reviewers have rated this product an average of 4.5 while the reviewers who don't have any deleted reviews in their history have rated this product an average of 4.2. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Fail Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
32% also reviewed:
Sennheiser RS120 II On-Ear Wireless RF Headphones... by Sennheiser
2% also reviewed:
Gaea Earphones with Microphone Premium Earbuds... by Gaea
2% also reviewed:
Chapter Seven: Lost Boys by Joe Gonzalez
1% also reviewed:
Amazon Store Card by Synchrony Bank
1% also reviewed:
Kindle Paperwhite, 6" High Resolution... by Amazon
1% also reviewed:
Parts Express Toslink Digital Optical Audio Cable... by Parts Express
Does not include products
from the same brand
from the same brand
322 of the 870 reviewers have substantial overlapping product review history. These reviewers have rated this product an average of 4.5 while the reviewers who have a more unique product review history rated this product an average of 4.2. Based on our statistical modeling, the discrepancy in average rating between these two groups is significant enough to believe that the difference is not due to random chance, and may indicate that there are unnatural reviews.
Warn Deleted Reviews
We discovered a total of 12 deleted Reviews for this product, with an average rating of 4.3. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
- We have no information on reviews that were never published in the first place.
- We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.
Warn Brand Repeats
Brand Repeaters
266 of the 870 reviewers have reviewed other products for this brand. While this is more Brand Repeaters than we'd expect to see, the discrepancy in ratings between the Brand Repeaters and non-repeaters isn't significant enough to rule out the possibility of it being due to random chance.
Pass Rating Trend
-
- 5%
- Created over 13 days
We counted 870 reviews for this product over the span of 5,812 days, an average of 0.1 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day.
However, we see the following 13 days exceeding this threshold:In total, we found that 41 reviews were created on just 13 days. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Word Count Comparison
-
- 0%
- Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.
Read more about our Word Count Comparison test.
Pass Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Reviews:
Show MoreShow Less
33 reviews
(4.1/5)
(4.1/5)
10 reviews
(3.6/5)
(3.6/5)
8 reviews
(4.8/5)
(4.8/5)
10 reviews
(4.4/5)
(4.4/5)
9 reviews
(3.6/5)
(3.6/5)
29 of the 870 total reviews for this product use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Reviewer Participation
-
- 0%
- From reviewers with an overrepresented participation
We didn't find any participation groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Reviewer Participation test.
Read more about our Reviewer Participation test.
Pass Reviewer Ease
The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 4.2, while the average ease score for reviewers in this category is 4.2.
4.2 Product's Average Ease Score
4.2 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
-
- 0%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.