VTL MB-450 - Does isolation improve performance?

Isolation usually helps tube amps. I have my BAT VK75se on Symposium rollerblocks and fat padz. Helps a ton. I'd be hesitant on $700 each for something like this...but I have to say the isolation helps as much as a $1000 power cord...

You can always go to Bed-Bath & beyond, pick up a heavy and thick maple cutting board (like 3 inches or so), put some brass cones underneath to pierce the carpet (if on) and BDR cones in between the amp and maple board. Maybe $100 each to try out...

have always had Granite slabs under mine never actually listened without it but experience with others have shown isolation does help example diy bright star sand boxes help the sound quite a bit on Conrad Johnson premier 8 amps didn't make it sound slow either like I thought it might.

if i were dealer i'd offer shelves for $1500 each to make more profit.
i guess it's more of fasion than performance takes place in that case just like buying sneakers for $600.

Before you spend $700 on a BDR why don't you try some HAL-O tube dampers first. They are cheap and might surprise you.