what should i buy?

[AxT4430 10+ year member]

pull the trigger captain! You have the right idear!

 

[trumpet 5,000+ posts]

There is nothing wrong with your amplifier! You're going to be wasting money if you replace that.

You might need more speakers to keep up with your subwoofers if you don't want to turn the bass down. In the mean time, I would first look to make sure you don't have your EQ boosted way up, try turning the gains down a bit, and I would check out your music to make sure it isn't highly compressed and/or clipping. A lot of music is produced to sound very loud, and any boosts on your EQ settings could make that worse.