Jedinite,
If you haven't experimented with a good power conditioner or after market power cords, you might consider that before fuse upgrades. The advantage of power conditioners is that they can improve every component plugged into them. They also lower the noise floor to such an extent that you'll hear tweaks and adjustments to your system more readily. Shunyata and PS Audio gear can be found for reasonable prices on a'gon. Not that it proves anything, but my father was thrilled with the improvements he heard recently after we applied power conditioning to his midfi system. He has the NAD 326BEE and Meadowlark speakers, which are hardly pricey. Good luck on your journey.
If you haven't experimented with a good power conditioner or after market power cords, you might consider that before fuse upgrades. The advantage of power conditioners is that they can improve every component plugged into them. They also lower the noise floor to such an extent that you'll hear tweaks and adjustments to your system more readily. Shunyata and PS Audio gear can be found for reasonable prices on a'gon. Not that it proves anything, but my father was thrilled with the improvements he heard recently after we applied power conditioning to his midfi system. He has the NAD 326BEE and Meadowlark speakers, which are hardly pricey. Good luck on your journey.