It turns out that these "Isoblocks" are commercially made and not designed or tuned by Mapleshade and are available for 29 cents each. See link below ....
The REAL isoblocks
Dedicated to the restoration and preservation of all original Dynaco tube audio equipment - Customer support for Dynaco VTA tube amp kits, all Tubes4hifi.com products and all Dynakitparts.com products
$300k turntables, or two-bit shock-absorbers?Eskimo wrote:Did you know that our friend, Kevin at Dynakits sells the same thing