Guess pretty much has been covered and you've got some good responses. You have to ask yourself what 'improvements' are you after before deciding on your next step. In my opinion, you have realized that you have outpaced your speakers in the selection of amps, and that may be well true. You have to realize that even after getting a substantially better pair of speakers, it is very likely you may still find your current amp lacking, and you then need to go searching for a matching amp again. As you have known, this is a never-ending process in the quest of audio nirvana. Now you can consider getting some new speakers.