I used the Symposium Svelte Shelves that are custom made for Parsifal's when I had mine. Go down to the bottom of that link page and you'll see where they make them specifically for the Parsifal. I only used the Svelte shelves between the cabinets, not the Ultra Platform underneath.
At the time I recall thinking it made a small difference, not easily audible, but a slightly better definition. Whether it was worth the $$$ or not is debateable.
At the time I recall thinking it made a small difference, not easily audible, but a slightly better definition. Whether it was worth the $$$ or not is debateable.