Help with the right amp for JM Lab speakers

I have a pair of Jm Labs Electra 926's as well as a smaller pair of Jm Labs ( I forget the model)floor standers. Each pair has a dedicated Carver TFM-15 100 watt amp driving them but I wonder what a noticable upgrade might be? I have plenty of volume but curious what might bring more clarity/ pop to the table. The smaller Jm's act as my rear speakers in 5.1 mode but I mostly listen to music in 2 channel x 2. Thanks.