Unwanted low-frequency noise from

2x inverter

85W x 2 @ 2 ohm

Similarly to “Class A pre-amps”

Palmer RIVER wupper - Passiv line-isoleringsboks s-dedupe_1392-1006 Unwanted low-frequency noise fromThe more complex the setup, the greater the risk of ground loops. With the Palmer wupper Line Isolation Box, everything goes quiet again, so you can enjoy your sound without hum and buzz. Palmer wupper is an isolation transformer in a rugged aluminium and steel housing. It separates the ground potentials between two devices, preventing equalisation currents, so only your audio is transmitted clean and free from interference. Palmer wupper was