I use the Aqvox AQ-Switches which appear to work very well. They are highly modified D-Link switches and Susanne is right, they do sound better with the PSU she supplies than a high quality linear one - I tried!
My network is rather more complicated than most domestic systems (and the one in the studio here in Germany is mainly for my work activities) and so there are plenty of places for noise to be injected along with the normal 'noise' associated with the network. I'm actually using the AQ-Switch more like you use the RL-1 and the only things attached to it are audio related.
I run my 4G router from a high quality linear PSU and do not need a separate switch.
That's nicely coincidental, Martin. Both my BT Smart Hub and my Netgear Gigabit Switch have 12v wallwarts and I'm mulling over whether or not it's worth getting one of those Chinese dual-12v LPSUs for them.
I didn't used to need the internet, my wife knew everything.
I was sceptical at first, but since the 4G router is only there to serve music I decided to invest in a nice 12V linear PSU from China and it certainly improved SQ over the standard switched-mode wallwart. The other thing that helped is the MeiCord ethernet cable.
I’ve read the blurb on the AQVOX modified d-link switch and I’m a bit lost for words tbh. Whatever people are hearing it certainly isn’t down to what is written on their web page. There appears to be a clear misunderstanding of Ethernet protocol and QoS and I have no clue what hygroscopic components d-link use!
Anyhow, I’m tweaking my lashed up filter with a bit of STP CAT5e cable instead of UTP then with luck I’ll get to try it out over the weekend. I’ll be upfront; I’m very sceptical it will make any difference, the cable I use is UTP and my router has no ground connection on its RJ45 ports so there is no ground plane interaction between devices. The only benefit maybe in the use of additional common mode chokes to the ones already built into the Raspberry Pi, so it will be interesting to see what happens.
Yes, no idea what the guy is on about. I suspect though that he might be misinterpreting the use of the resin on the board which is there to stop people seeing what components have been changed used and not to to prevent any hydrophilic leakage of current (if that even happens).
Now, this filter. An unexpected chance to try it out tonight as I’ve been left alone for a few hours. I really am going to have to get my head around this because I think it makes a positive difference. I can’t put my finger on it but the sound has improved, more musical, easier to follow, uncovering of detail. It’s not a massive improvement though. I’m going to live with it for a while and go ahead with a few tweaks over the weekend...and no I’ve not been drinking!
Sorry that’s too nebulous . If there is some cause and effect in process then we should be able to identify it. Simply stating ‘improvements’ doesn’t cut it. What are you improving in a defined established engineered environment certified by established industry bodies that have been in place for decades?