Best kept secret in AC line filtering conditioning

The 156 is $2300, and the 1512, which is the 12 outlet model, is $4200 in the States according to one US dealer's website. You’re quoting prices from their website but noting the wrong currency. The website prices are in pound sterling when buying in the UK. Aside from the dollar’s weakness against the pound 1.39 to 1 , I'd assume the additional difference also reflects shipping , customs and US dealer markups

I have an AQ Niagara. I don’t have any unwanted hums or noise. However, I am getting a 2.2kw double conversion lithium ion ups as we get a lot of power interruptions in central Florida, and the Niagara doesn’t have that capability. 😎

When my amp is on with shorting plugs in the inputs, the volume all the way up, the silence is deafening, even with the rest of the gear plugged in, just a faint hiss, so how will this help improve things, or wouldn’t it?
Maybe the average UK power supply is quite good quality, or my amp just has a very good PS. https://www.radiomuseum.org/r/frank_hi_fi_stereo_amplifier_pram_30.html


Component wise, it’s not a lot for your money.
@oldhvymec +1

"best kept secret" is a marketing hype phrase. However good these units are, and the testimony about them is quite good, your language gives you away as someone promoting them rather than advocating qua hobbyist.