How about measuring the "Ripple" again at a bandwidth that includes the switching frequency and at full load !

I really liked this video, as well as the overall test. For your next video, could you explore if the regular 'wall-wart' power supplies can have ripple reduced by using clip-on ferrite chokes ?

I hope that you can soon test icepower/purifi/Pascal power supplies compared to a linear power supply 😊

Proper shielding and grounding with cookies! 🍪 I'm impressed 😎👍

Good job 👍. But this measurements do not represent noise and ringing at hundreds of kilohertz or megahertz, which can be generated by SMPS at some load. For linear power supply this would be good technique. You can test SMPS with FFT analiser first to understand the emitted noise spectrum. One more thing is the coupling capacitor inside of the SMPS. Power supply can be quiet, but can bring some noise from the grid.

I own a few ifi items, and they are very good. Glad to know they actually measure up to their claims.

Great ideas laid out in an informative video. I always wished I had an oscilloscope to measure noise. I make all my own linear power supplies using software modelling to shoot for low noise, but never have measured to see if they perform as expected. This shows the steps to build an effective test rig for a few hundred $. Nicely done.

This is a amazing review. I recently search a ac-dc adapter. You help me a lot.

Great video I also purchased same adjustable Voltage power supply , I recently purchased IFI Audio grade power supply V1 15V but for some reason wont boot up My Topping DX3-Pro + Dac . With power supply watch another uTube Channel this one have very low noise and ripple . Now it powers up perfectly better sound stage highs are much less harsh to ears..

Love my TAD evolution ones!

Gaby, can you measure some Linear PSUs?

I purchased the ifi power supply for my Cambridge audio 540p that I've just upgraded, but it didn't work with it, as the 540p needs a AC power supply & the ifi is a DC power supply, my mistake 😢, another Great video from you AAAAA+👍

Love my ifi i power / also i use medical grade power strip - pick i just uploaded on my community page with my amazing Sansui au717 that i would put against any Luxman/Accuphase/McIntosh - Sansui built them so good !! Have you ever worked on Vintage amps ? Thanks Gabster !!!!

Thanks for showing us the ifi is indeed very good. Can you also test it on the ifi ipower (gen 1) so we know if it is worth the extra $20 between ipower and ipower2 5v? Thanks

Can you compare iPhone and iPad Charger with iFi? I am using a 5watt iPhone charger for my Topping E30 and hear no noise at all.

Hi Gabster could you do a video about the Puritan audio labs 136/156 mains power conditioner I read a lot good claims about it but I want to be sure it's worth it's money

It would be great to see the noise levels of Iancanada purepi power supply and battery ps.

Hi Gabster, I followed you... very cool DIY streamers and speakers, planning to build my own. I like that you are very scientific and knowledgeable.. Some "objectivists" (ASR) would say Ian Canada is way overkill because there is so much distortion in speakers and power amps and you can buy a Topping DAC with switch mode PSU that measures perfectly for 349 USD.... What do you think Ian Canada stuff adds.... that people are missing... (planning my own build, scaled don of yours...if nothing else it is fun!)

Very interesting video. I installed 10 gauge dedicated circuits and then I thought I have a power conditioner and tried to determine what gauge wire is used to connect the various outlets on the back of their unit. I asked the manufacturer, Transparent, and they said it was proprietary but was told they use a combination of 10 gauge and 14 gauge wires inside their power management box. I use a 10 gauge power cord which they furnished to connect the unit to the Wall outlet. My guess is they use 10 gauge initially and then branch out to the various outlets inside the unit with 14 gauge. For the short length within the Power box do you think it matters not having a continuation of 10 gauge electrical wire, assuming they use 14 gauge?

interesting to measure from pc power supply how is it. Because IFI is too expensive imao

Question: will connecting a switching power supply to a balanced isolation transformer improve it's performance? (will correcting some of the input AC ripples benefit the DC output of a switching or a linear power supply?)

Great review here. Thank you. Just curious if the ripple varies with the voltage in your variable PSU. I guess what I am alluding to is if the higher voltage Ifi ipower switching has even lower noise / ripple level than 5 volt.

Thanks!

How long did it take you to eat all those butter cookies so that you could use the container for a Faraday cage? I could probably finish them off in one sitting. Is that why you made this video, so you'd have an excuse to eat all the cookies?

Hi, I have a Schiit loki + . The power supply is buzzing and I can hear it 6 feet away. Should I buy a new one? Thanks

Thanks for the video! I'm going to get the IFI Power 2 for my Ethernet net switch going directly to my Aurender. Do you think it's necessary to get one for my Cable Modem and Router. Those are on another circuit and level of our home, however, i dont know if the noise from its supplied power adapter carries over through the Cat 6 Ethernet run. Thanks

Hi! Would it also be possible for you to recommend some linear powesupplies perhaps in the region of approx. 100-250 Euro? Allo Shanti Dual Linear seems to get much attention in that region. But it's a jungle and hard to get an overview. Perhaps you have tested some?