Hello Mekong56.
Like Jfrech I also went from the VK60 to the VK75se but both in mono-block configuration.
The differences I heard were increased frequency extension both high and low with an overall more refined treble. Increased resolution of detail. A bigger sound-stage with more air. Dynamic authority was more linear. An overall more neutral tonal presentation.
However, the VK60 does have a rounder dense quality in the mid-range that can be very appealing which renders mid-range textures with more image solidity. This added thickness actually obscures subtle information in those frequencies.
Only you can decide if the upgrade is worth the money spent. For me it certainly was. One more thing to keep in mind is that I'm fairly certain the upgrade will renew your warranty in full. Just check with Steve or Victor about that to be sure.
Good luck.
Tom
Like Jfrech I also went from the VK60 to the VK75se but both in mono-block configuration.
The differences I heard were increased frequency extension both high and low with an overall more refined treble. Increased resolution of detail. A bigger sound-stage with more air. Dynamic authority was more linear. An overall more neutral tonal presentation.
However, the VK60 does have a rounder dense quality in the mid-range that can be very appealing which renders mid-range textures with more image solidity. This added thickness actually obscures subtle information in those frequencies.
Only you can decide if the upgrade is worth the money spent. For me it certainly was. One more thing to keep in mind is that I'm fairly certain the upgrade will renew your warranty in full. Just check with Steve or Victor about that to be sure.
Good luck.
Tom