Hvu, You can compare the use of Herbie's footers in two different ways, first directly between the Ayre CX-7e and your maple board base, and second under the maple wood base.
I think directly under the component can be the most neutral, allowing a component to be at its best.
Incidentally, I have found that placing one or more Cardas/Ayre Myrtle Wood Blocks on top of a component, especially the wooden plinth of a turntable, can fine tune the sound separately from the overall benefit of any footers.
With any support method, there can be an adjustment period of minutes to hours before the completed benefit, or effect, upon a component is audible. This endpoint is when there is a sense of ease or rightness to the sound, without any listener fatigue.
I think directly under the component can be the most neutral, allowing a component to be at its best.
Incidentally, I have found that placing one or more Cardas/Ayre Myrtle Wood Blocks on top of a component, especially the wooden plinth of a turntable, can fine tune the sound separately from the overall benefit of any footers.
With any support method, there can be an adjustment period of minutes to hours before the completed benefit, or effect, upon a component is audible. This endpoint is when there is a sense of ease or rightness to the sound, without any listener fatigue.