While we are listing tweaks, one that is very good is the Audio Magic Pulse Gen ZX. I got the idea from EVS (Tweak Audio) oppo mods page.
You connect it to your IEC terminals, it uses power to create some sort of ambient field that treats everything within a short distance, and works best in digital players and dac's. (anything with high frequency noise)
Using Dr Lee's LPM and the Pulse Gen ZX together, takes my Cambridge Audio player to a high level of refinement. Without these two tweaks I think this player has a fatiguing and harsh digital type sound.
You connect it to your IEC terminals, it uses power to create some sort of ambient field that treats everything within a short distance, and works best in digital players and dac's. (anything with high frequency noise)
Using Dr Lee's LPM and the Pulse Gen ZX together, takes my Cambridge Audio player to a high level of refinement. Without these two tweaks I think this player has a fatiguing and harsh digital type sound.