Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
I bought these to replace my groove tubes in my fender super reverb reissue. They work well. If I'm being honest, I think they sound slightly better than my original groove tubes. I've been running them for about a year now with no issues. So, given their reasonable price, I can't see a reason to not buy these.