The following companies have in the past and/or do now support TDSS in the upgrades that we provide for their products. As a result, in the event a TDSS modification or upgrade has been or will be installed in their products, the original manufacturers' service warranties remain fully intact and will not be compromised or altered in any way:


NuPrime Audio

TDSS is the only authorized RMA/Warranty service provider for NuPrime Audio here in the USA. In addition, we are the only entity authorized to provide product upgrades of our own design, such that their installation does not void or nullify or affect the manufacturer’s original product warranty in any way.


Legacy NuForce, Inc.

Several upgrades involving the Reference Series products have been developed by TDSS and shown to significantly increase product reliability, lifespan and output power... as well as greatly improve their overall sonic performance.