This is the best sound booster that you can find on the Internet. Thanks for making this service available to users of the Firefox Browser.

doesn't work at all!

Works perfectly - just move 'slider' across - and the result is immediate. Best of all - unlike two others I've tried - this one causes no distortion. Just nice clean sound. I'm using headphones, and Firefox browser.

отлично

This is a great extension that does what it says on the box.

very nice :)

this add on does exactly what it is meant to do, perfect!

nu merge în firefox

genial, eficiente !