I enjoy using this add-on on sites like YouTube but this add-on cause problems in playing videos on websites like Udemy and Amazon Music. Turning off this add-on on Udemy or Amazon Music solves the video or audio playback issue on those websites. I hope the developers look into this problem and make this awesome add-on even better.

Funciona bien, lastimosamente esta extencion afecta al reproductor de youtube debido a que no deja que se aumente la velocidad de reproduccion del video

Fix it not letting me play google drives videos. It interferes letting me play videos on other sites as well.

Great add-on. It really enhances the music on Firefox. But when it is enabled, the Youtube's playback speed is not working. I hope the developer will fix this issue soon.

Doesn't work with Amazon Music and Google pronunciation app.

Не проигрываются видео-тизеры на страницах магазина Стим (и на некоторых других сайтах). Помогает только полное отключение дополнения в настройках браузера (НЕ в настройках дополнения) и перезапуск браузера. 3/5

Video teasers are not played on the Steam store pages (and on some other sites). Only disabling the add-on completely in the browser settings (not in the add-on settings) and restarting the browser helps. 3/5

it works well but has "side effects" as written by others on various player. On bandcamp for example prevents playing a song, on youtube doesn't work the change of playback speed. So, if you need it works very well but keep in mind those bugs

When trying to submit a bug report on your site I get the following 403:

"ErrorResponse xmlns="http://sns.amazonaws.com/doc/2010-03-31/">
Error>
Type>Sender
Code>AuthorizationError
Message>User: arn:aws:sts::230206250052:assumed-role/Cognito_FeedbackMybrowserUnauth_Role/CognitoIdentityCredentials is not authorized to perform: SNS:Publish on resource: arn:aws:sns:us-west-2:230206250052:Feedback_M
/Error>
RequestId>7065c039-d297-59e6-8fed-974b85a41e2a
/ErrorResponse>"

Reason for 3 stars:
In Firefox, this add-on breaks a variety of video sites and gifs e.g. streamable.com, gifs on reddit when using res. e.g. "Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://giant.gfycat.com/FlatAppropriateGrouse.mp4. (Reason: CORS header ‘Origin’ cannot be added)."

Could you remove the items of the right-click menu?

Nice, but it does not work fine in every sites. E.g. it makes silent movies and audio files on archive.org and similar sites. I have to disable, waiting for a better version.

Cannot play music on bandcamp as it shows CORS errors.
https://i.imgur.com/VkRzeQJ.png
https://dakhabrakha.bandcamp.com/album/alambari

It works great but after a long process I realized this add-on stopped twitch clips from working. Couldn't create them couldn't watch them, just a black screen. I removed it and the problem stopped. I re-installed it and the problem came back.

its doing its job, has some nice little features but WHERE IS THE ON OFF BUTTON for joshua's sake? will deinstall again

The idea is a good one, but:

1: if you were able to change the frequency of the bands, like in a parametric EQ that you would see in Fruity Loops, that would be better, but that is not the biggest issue.

2: The module does not actually shut off the dry output and instead directs both outputs to the browser out, causing the signal to clip when, lets say, you want to do a moderate bass boost. The only way to not have it clip is to turn the preamp all the way down, but THIS DISABLES THE EQ. Therefore, it is completely useless at what it tries to do at least for me, I do not know about others. Maybe I am making a mistake in using it, but I do not think so.

3: And I almost forgot! The graphical interface lags out severely for me. Whenever I slide a bar too fast, it applies the change over the next two seconds, which is infuriating for someone who is trying to find the right balance in the frequencies by ear.

So yeah, Firefox, I hope you get a better equalizer.

EDIT: Actually I think the double-mixing phenomenon I was describing is a problem with Firefox itself, not this particular EQ. I just tried it with another similar equalizer and it behaved, well, similarly. I am also using Ubuntu, don't know if that has anything to do with it...