Good Inexpensive Multi Plug

Seeking some power advice...

Ive recently been adding some power options to my set up. Moved from a cheapo 12 outlet multi plug with filtering/surge protection to a Tripp Lite Isobar 6, and found some definite sonic improvement. Experimented by removing everything other than amp, dac and source...marginally better still. Then moved to plugging my amp directly into the wall. No contest. Taking away the current clamp really opened everything up. Sonic improvement was so good that trusting the amp’s own power supply filtration far exceeds the current compromise. But I don’t trust leaving it plugged straight in..lightning, surges, spikes etc.

Question is, what multi’s our there with a power switch do not (Significantly) clamp current? Or do I just keep doing squats until I save enough shekels for a power supply (or house panel protection) that costs more than my amp?

Thanks ahead of time 🙏🏼

System:

Creek Evolution 50A
AlloDigione Player/Transport
Airist Audio R2R dac
Harmon Kardon CD player/transport
Totem Arro speakers
Wirewolrd power cable (amp)