System assessment--should I change amps?

Hello all. I have been making some changes to my system (primarily the analog side) over the past year or so, after about 10 years without changing anything. System: VPI Scoutmaster TT (SDS, upgraded clamp), Soundsmith Paua cartridge, Transparent Reference Phono MM2 cables, Herron VTPH-2 phono stage, Musical Fidelity TriVista 21 DAC, Musical Fidelity 3.2 CDP, Transparent digital cable and music link Ultra interconnects, Musical Fidelity KW500 integrated amp. (with Transparent modified internal cabling), Transparent Reference MM2 speaker cables, and Wilson Audio Sophias. Also Transparent power conditioner and power cables.
Question: would anyone suggest another integrated amplifier that may be better suited to this system? I have always loved the kw500, but it is 10 years old. I like the sound of my system as it is a lot. I am not the type to change components frequently. And, I am not bent on spending money on a new integrated just for the sake of change. I do want to stick with integrated amps. I would appreciate hearing your thoughts and suggestions. Thanks!