I agree with you, that an amplifier upgrade is appropriate. After reading some reviews and taking a brief look at your speakers specs, any amplifier you choose should have a good 4 ohm rating. What that means is that if your amp delivers 40 watts into 8 ohms, you would like it to double and provide 80 watts into 4 ohms and 120 watts into 3 ohms. I dont have a specific amplifier in mind for you but your budget is sufficient for a very considerable upgrade - especially if you buy used.
Dont disregard the speaker cautions youre receiving - which I also suspect is the prime culprit here. Thats a lot of speaker you have there. If it was my room, the Totem Model 1 would be on my short list.
Dont disregard the speaker cautions youre receiving - which I also suspect is the prime culprit here. Thats a lot of speaker you have there. If it was my room, the Totem Model 1 would be on my short list.