I don’t know about that. To me, they seem to be useless objects, pointless money sinks, fetish objects, really, deployed in the service of obsolete superstitions.
I say this because I’ve never seen any evidence that they actually fix anything or in any way have a positive effect on modern technology. Do you know where I can find such evidence?
It‘s always a good idea to have at least some experience when building an opinion. A pity you haven’t come across these „useless objects“.
Hearing with your own eyes is a different story than just reading measurements of devices and trying to relate that to sound quality.
For the effect of power you might have a read of https://www.audioquest.com/resource/1138/Power-Demystified-whitepaper-8-23-18.pdf
Yes - but it depends on your setup. I did have a PowerPlant 5 - or was ist PS5, can’t remember anymore 
- with my old setup. As I got my Linn Selekt DSM it was absolutely clear - SQ - I don’t need that anymore. The sound was better without the PowerPlant.
I’d be perfectly happy to do so if there was any evidence that they actually addressed some issue. Otherwise it strikes me as being somewhat like travelling to Canada to hunt unicorns. Sure, I could do it. But really, there are so many other things I could be doing, too. Like arguing with strangers! 
That paper you point to is not evidence; it is a marketing device from a company that sells many highly dubious fetish objects (e.g. fog lifters, noise stopper caps). We’ve discussed the paper before. It reviews a number of issues in power generation and transmission, in a perfectly sane fashion. But the most important sentence is in the first paragraph:
For most, it is enough that they can rely on a service tap from their power utility to supply the voltage and current our audio-video (A/V) components require.
Power conditioning of bad power is a perfectly reasonable thing to do. But only if you have bad power. Even then, I’d get an electrician to fix the problem, not an audio hobbyist.
Well there are also specific measures in that document 
Which ones were you thinking of?
For instance, I have my audio equipment plugged into a surge protector. As well as every other piece of electronics I have that cost more than $50.
I’ve had an electrician test all of my sockets for correct polarity, and fixed the one he found that was miswired.
My computers are all powered by a UPS, so my Roon Core machine won’t lose power if my mains power goes out.
Never thought about that before Very interesting - but why did you do that? Any improvement after you did that?
THX
Torben
It was a new house, so I had it gone through to find any gotchas. A good house inspector will look at the wiring.
Don’t make me laugh! I’ve got a cracked rib, from unicorn hunting in Canada.
Get well Red wine can help
I’ve measured the Intona USB isolator making difference with quite many devices that don’t have galvanic isolation on their USB implementation. Nowadays I use it for measurements whenever necessary, especially when measuring unbalanced outputs where noises get through more easily.
Most typical thing you can see is that 8 kHz USB packet ticking disappears from the DAC output, especially typical behavior for XMOS based USB implementations.
For DAC-60 board (add-on that you plug into your amplifier card slot), the benefit was especially easy to hear. Without Intona with my ear next to tweeter I could hear chirping noises from the computer when the option card input was selected. When I added Intona’s isolator, that disappeared and became completely silent.
Intona’s USB isolator is not originally an audiophile product, it was primarily developed and made for industrial, measurement and medical use cases.
The intona is the best usb isolator on the market , period .
Learning this it will also benefit for ifi NEO iDSD that has the XMOS chip implementation, right?
Many thanks for detail insights!
To some extent yes. From XMOS implementation perspective, NEO has one of the better ones.
Looking a second hand Meraki switch, is MS220-8 Compact Series a good choice?
Currently using an unmanaged Cisco business 8 port.
Will update make any benefit?
Thanks
@Moy - If you need SFP, than it could make sense. Or go for Cisco Meraki Go 8 Port Switch (GS110-8-HW-EU - no licence).
If you go with MS220-8 please check licence. Couple of years ago you had to pay yearly licence. I don’t know if this is still is the case.
If you don’t need SFP why change.
Torben
Many thanks @Torben_Rick , I guess I’ll wait better and get it from Amazon https://a.co/d/0IWXu7K
Actually, at the moment, all is working fine with this unmanaged cisco switch https://a.co/d/4IyMVph. I’m just making an update on my cables for BJC unshielded https://a.co/d/1i5VAtr . Currently, I have a mix of both.
Don’t really need SFP, but will be fun to test it in the future, have Intona on both of my DAC’s, don’t know if this helps, but still is nice to have a better network environment.
One question, if a device that is not related to the audio chain has a shielded cable connected to the same switch, will a ground loop affect the unshielded other cables ( I guess the answer is obvious as plastic UTP will protect it from ground loops)
Thanks!
I think it would be best to use CAT6 U/UTP connected to your switch. I only have one short 0.5 meter (Prysmian Draka UC900 Super Screen 27 CAT6A S-FTP/PIMF - RJ45 Hirose TM31 CAT6A connector) from my FMC to DAC. The rest is Telegärtner CAT6 U/UTP - but BJC is just fine if you live in the US (high shipping cost if you live in Europe)
Torben
Note that three prong mains plugs and receptacles in the US, UK, Italy, and many other countries are asymmetric, but standard German Schuko may be mated both ways.
Especially with large transformers in linear power supplies, it makes sense to have the live end connected at the inner winding side.
That helps to reduce the stray field, often resulting in a measurably lower voltage potential between protective earth and signal ground.
When connected via single ended audio cables, that potential difference causes equalization currents to flow through the signal cable grounds between system components, possibly audibly worsening the signal to noise ratio.
So, with Schuko connectors, it may be advisable to measure both mains connection orientations between components‘ RCA signal grounds sans RCA cabling with a multimeter and use the plug orientation causing the least AC voltage potential.
You should not be able to damage anything that way, but remember to never unplug RCA‘s with components turned on and unplug speaker wires at the amp while off before fumbling around - I‘m not liable if you fry stuff by doing stupid things…
If using an AC filtering device with large transformer(s) and/or chokes, make sure to test its plug orientation also…
For those without the last bit of bravery there are ready made test sockets to help you indicate the Schuko connector’s hot side.
But there‘s hardly ever an indication on the plugs of devices, so it doesn‘t help too much …