I got this app to overcome the overprotective volume limits on my MacOS. SpeakerAmp does a good job of boosting those limits. A word of caution, there are limits you can apply to customize the app for your system. I recommend that you start with the lower settings and then turn them up if you need to. The app has the capability of causing pain and possibly blowing the voice coils on your headphones if you crank it all the way up. The free version is limited to a 10 band equalizer. I like the out-of-the-box equalizer presets on my music player better than the ones on this app. But those presets are just the starting point and I expected that would be the case from the get-go. The control panel is quite small on my monitor. I had to turn the resolution all the way up to make the sliders large enough to have a chance at adjusting them where I wanted. Expect to spend a bit of time getting it right if you are as picky as I am. After you get it adjusted you can save that setup as a preset and pretty much forget it. Or you can set the equalizer to flat and use the equalizer on your music player if you already have that one set the way you want. I always use only one equalizer in the audio pathway. Trying to use multiple equalizers is an easy way to make your music sound bad.The Pro version has a better equalizer and hopefully an easier to adjust control panel that you can leave on your desktop.But this thing does exactly what I wanted it to do.

The fact that this amazing, actually functional app is free, is in my opinion, beyond comprehension.I am a long time Windows user who came to the Mac platform when my daughter gave me an older mid 2012 MacBook Pro which I have come to enjoy very much and use much more than my WIndows machine. However since my hearing is not quite what it used to be I was using my earphones or buds a lot to listen to various things on it. When I found the SpeakerAmp app searching for something that would increase the volume, I had to try it, especially since it state it was system wide. I kept looking for the catch, like a hidden trial or something popping up stating that now I would be charged to continue using it; never happened. I was in communication with the developer and asked about a donation page and was told a review would be sufficient.I can't say enough about the app other than I am extremely satisfied!Thank you again, for an amazing app!

I'm so glad that I found this app because it's been so useful adjusting the audio levels of my bluetooh speakers that I connect to my M1 and M2 Macbook Pros. Essentially instead of purchasing a desktop speaker system, I've been using my Sony SRSXB41, Lenovo, and JBL speakers with my laptop. Since apple for some reason doesn't have their own built in equalizer, this app has been awesome in allowing me to adjust the EQ for basically any audio device. Yeah it's really weird how those speaker manufacturers develop the speaker apps for an iphone or ipad only, and not the actual desktop/laptop computers. Well anyway, try this app out and see what you think. I bet you'll be like me an end up purchasing the pro version after the introductory trial is over. Don't wait, try this app now.

This product being advertised as an all-purpose system-wide volume adjuster is unfit, as it has great difficulty keeping up with bluetooth devices and sound synchronization. If you are using this program to simply edit and equalize sound then I can see how it would be properly lauded; however, using it to try to simply boost volume on a bluetooth device has proven useless.The program is unable to interact with bluetooth volume controls, causing conflict where the volume shown in the booster program is not kept synchronized with system volume. This means that pushing the volume up and down buttons on the MacBook actually functions differently than pressing the volume up and down buttons on the bluetooth device that is connected. This makes the program a complete pain to keep up with, as you have to constantly enter the volume booster to manually synchronize the two layers so that they don't end up in some weird configuration that is an undetermined combination of both levels.In addition, the program frequently loses its place when using the bluetooth play/pause function on my headset, where it will simply fail to play any sound through the volume booster and force the user to enter System Preferences and select their sound device again and again to force it to play.Overall, this program is clearly not tested or designed to operate in conjunction with bluetooth audio devices and fails miserably at that task.