Two things did nothing for me:
Subaruguru's PC, while a nice kit and still "in" my system, did not do anything I could identify on any component.
Audiopoint speaker spikes. For many months my stock spikes were lost, so I purchased audiopoints merely as a replacement. The salesman told me they would transform my speakers to sound like the "next model up", so that is why I mention them on this thread. Months later I found my stock spikes and did not hear a difference in comparison. The APs have since been relegated to component stand duty. The negative was that with their narrower base left ringed marks on my speakers. Blaming the poor curing of my speakers' wood cabinets, the salesman would not let me return exchange for a model with a wider base.
Subaruguru's PC, while a nice kit and still "in" my system, did not do anything I could identify on any component.
Audiopoint speaker spikes. For many months my stock spikes were lost, so I purchased audiopoints merely as a replacement. The salesman told me they would transform my speakers to sound like the "next model up", so that is why I mention them on this thread. Months later I found my stock spikes and did not hear a difference in comparison. The APs have since been relegated to component stand duty. The negative was that with their narrower base left ringed marks on my speakers. Blaming the poor curing of my speakers' wood cabinets, the salesman would not let me return exchange for a model with a wider base.