Choosing the Best Power Supply. Lets measure ripple. Can a switching psu be good ?
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- čas přidán 9. 07. 2024
- IFI power supply :I measured the ripple on 5v Switching power supplies which one was best.
IFI power supply : amzn.to/3lFTW3q
variable PSU: amzn.to/3YMzqwJ
Canadian / EU Link: amzn.to/3IqVQ0o
How to measure power supply ripple down to 1uv • How to measure power s...
variable PSU: amzn.to/3jVzeMc - Jak na to + styl
How about measuring the "Ripple" again at a bandwidth that includes the switching frequency and at full load !
This is a amazing review. I recently search a ac-dc adapter. You help me a lot.
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 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.
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 😎👍
just don't eat them all at the same time :)
@@Gabster1 Your wisdom is deep young Jedi, I think 💫🌟 😎👍.... yoda
Love my TAD evolution ones!
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..
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
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.
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.
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?
Thanks!
Thank you appreciate the support
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+👍
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.
Correct, but Rew does supports 0 to 50 Khz so not too bad for a free software beyond that you will need FFT analyzer as you mention Luckily for Audio he biggest problems are usually in that range.
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.
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 !!!!
Glad you like it definitely changed my mind about switching power supplies.
I have a lot of vintage amps that I collected over the years itching to upgrade them.
May be soon
Thanks Tee-Jay
@@Gabster1 Hey Gabster Thats great to hear about your Vintage Gear !
I been into vintage gear for a long time since 89' 😆 But going to Master Restore me Au 717 its been one of my favorites
My buddy Zero fidelity (Sean Fawler) Said if the au 717 sold today it would be atleast $ 6k U.S. I just love the warm full body sound of the Sansui with Sparkling sweet top end and powerful bass and netural mids gets me everytime -
You have a lot of nice gear that luxman power amp looks to be 🔥 !!
@@tee-jaythestereo-bargainph2120 yes I love the Sansui sound got a AU4900 that I bought for $5 15 years ago I plugged it in and was blown away by the sound just needs a bit of restoring. I should try to find a 717
Hi, I have a Schiit loki + . The power supply is buzzing and I can hear it 6 feet away. Should I buy a new one? Thanks
Thanks for the video! I'm going to get the IFI Power 2 for my Ethernet net switch going directly to my Aurender. Do you think it's necessary to get one for my Cable Modem and Router. Those are on another circuit and level of our home, however, i dont know if the noise from its supplied power adapter carries over through the Cat 6 Ethernet run. Thanks
yes the router is important Check out my Video on this Subject czcams.com/video/ybtRqJt8Vo8/video.html
Gaby, can you measure some Linear PSUs?
that would be great!! 🙏
I will for sure
Plus one for measuring some linear power supplies. Particularly your IanCanada LinearPi!
@@philipkent5273 with and without supercapacitors please :)
Question: will connecting a switching power supply to a balanced isolation transformer improve it's performance? (will correcting some of the input AC ripples benefit the DC output of a switching or a linear power supply?)
A bit but not a lot
@@Gabster1 Thank you! I have been using one to power my headphone setup and feel it has improved the overall performance. It's very difficult to AB test. But i feel everything sounds more clean & dynamic. Maybe you could use a probe to test these power supply options for a video :) love your work and music suggestions!
Hi! Would it also be possible for you to recommend some linear powesupplies perhaps in the region of approx. 100-250 Euro? Allo Shanti Dual Linear seems to get much attention in that region. But it's a jungle and hard to get an overview. Perhaps you have tested some?
I have the Shanti I will test it sometime but hate the skinny long output wires. if you don't mind DIY the Linear Pi by Ian with Ultracaps is great. on the Cheap the 5$ ebay regulator is good not a lot of ready units without asking a fortune.
Hi! Thanks for your answer I shall have a look at Ian’s store, but it will be interesting to hear your opinion about the Shanti or some similar powersupply, how they can improve quality of sound. Thanks for your great channel!
@@dana0001 You are correct I will put it on my early next year's list Happy Holidays
interesting to measure from pc power supply how is it. Because IFI is too expensive imao
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!)
I would take anything that ASR says with a grain of salt. They really don't know what they are talking about most of the time. They also said a $600 preamp measures "perfect" and is as good as a $10,000 preamp. I have heard the $600 preamp next to a $3000 one, the $600 didn't even come close. If half of what they claim was true, there would be a lot of hifi companies out of business.
@@Pete.across.the.street@ Pete from across the street - I agree that the 3K preamp USD sounds better. Amir can be a little fast to judge sometimes - but I have not seen a single engineer disputing his audio measurements. Gabster also seems very scientific, though I would argue above that we should measure the change in sound from a DAC with different SMPS', as we are not listening to the power supply, but the DAC. However, I was just curious, about what "philosophy" Gabster has to measurements...
@@jungtarcph his measurements are accurate but usually he is measuring the wrong thing and uses inaccurate assumptions and comes to conclusions that his own data doesn't support. One of his reviews he was testing jitter on an analog output, another he didn't recommend an item because he measured something that the item didn't claim to do, another he tried to measure emi on a cable that was unplugged. Just because other engineers haven't contraindicated him doesn't mean his conclusions are true. Most probably don't know him or care enough to chime in.
@@jungtarcph that is interesting, do you have a link to measurements of ian canada products that show that there is a lot of distortion in ian canada products?
I also use ian canada products myself and am curious, by the way, I don't hear any distortion in the music here and have owned many da converters in the past, from high-end to cheap.
@@Pete.across.the.street I think there might be other things that ngs to measure, but I have still not seen anyone saying what ASR does wrong. My personal philosophy is that sound character is hard to measure, and so is how it pairs with other equipment. But I like to see a person of science come up with a better way.
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?
Lol did not take long 😀