Sound Better w/Amp Directly Into Wall Then Thru Zero Surge


I’ve been breaking in a Pathos Classic Remix. It’s lovely at small things, but when things got complex, the soundstage flattenned, the sound compressed, and the top end got sort of hashy.

 

When my last amp and speakers got fried from a surge, even when plugged into a Shunyata Hydra, I decided I needed some more serious surge protection. I was directed to a Zero Surge brand protector. I have been plugging the Classic Remix into the Hydra and that into the Zero Surge.

 

My previous amp, a Unison Research Unico was quite improved going through the Hydra in terms of the sound, but, again, that was going into the wall.

 

With the Classic Remix plugged into the Hydra (and the Zero Surge), I decided to plug the Classic Remix directly into the wall. Immediately there was an improvement with the dynamic bloom and lessening of the harshness when the music got big.

 

I’m wondering how much the Zero Surge was reining in the dynamics? I need to try comparing the Hydra directly into the wall with the Pathos plugged in, as well as trying to plug the Zero Surge directly into the Zero Surge. But, boy, it seems as if something was limiting the current to the Pathos.

 

But I have heard that some manufacturers say to plug their apps directly into the wall. How do I protect my equipment (without going to crazy expense)?

 

One other thing - I called Zero Surge and Jim, the guy I spoke to, told me that there's nothing in the Zero Surge that would cause it. "It's just wire", he said. 

analogj

I have run my amplifier direct into the wall socket as well as a conditioner and prefer the conditioner sound. Everyone will have a different opinion and  it is worth plugging direct into the wall socket for a comparison. I have a whole house surge suppressor on the breaker box with good quality breakers and a very substantial grounding rod set up. If the lightning bolts are flying, I am still unplugging all my gear

Yes. A conditioner can be distinct from a stand alone surge protector, which is what the Zero Surge unit is.

 

So I did try plugging the Pathos directly into the Zero Surge. By ding do, I lost some openness, a bit of distinction between instruments in the soundscape, a bit of flattening of the soundstage. The treble, in addition to losing a bit of openness, is less smooth plugged directly into the wall. Overall, the amp’s sound has lost a bit of its magic, and sounds a bit closed in and tight. 

 

So I’m wondering what is happening in or to the amp to cause this change in sound? Again, the rep from Zero Surge today said that there shouldn’t be any difference. "It’s just wiring."

They’ll always claim that their power conditioner is non-current limiting. But the ZeroSurge uses filtering which affects sonics on high-current draw components like amps. I have a Brick Wall (same design) and hear the same effect as you when amp is plugged in.

If you want surge protection for your amp, buy a high quality power strip with no filters. Something better than a plastic unit designed for computers.

I know Nelson Pass likes direct plug in for his equipment. Any good amp will regulate the voltage itself and shouldn't need a conditioner.

It’s just getting in the way. You’re hearing an impedence of sorts to the power available. If it sounds better without, you know what to do.