Is this $40 card a SCAM?

Datum objavljivanja: 3. Ruj 2020.
Visit and use offer code LTT for 10% off
Email us or check out for book details!
Are you a distinguished audiophile who uses their PC for high-end audio reproduction? Or perhaps you just want the best possible sound to come out of your speakers… so can you smooth out the power delivery of your PCI-e bus with a $40 power filter card?
Buy : GRADO SR80e
On Amazon (PAID LINK):
On Newegg (PAID LINK):
Buy: AMD Radeon
On Amazon (PAID LINK):
On Newegg (PAID LINK):
Buy: Power Supplies
On Amazon (PAID LINK):
On Newegg (PAID LINK):
Buy: AC Power Filter
On Amazon (PAID LINK):
On Newegg (PAID LINK):
Buy: FiiO E10K
On Amazon (PAID LINK):
Purchases made through some store links may provide some compensation to Linus Media Group.
Discuss on the forum:
Check out DMS:
►Affiliates, Sponsors & Referrals:
►Private Internet Access VPN:
►MK Keyboards:
►Nerd or Die Stream Overlays:
►NEEDforSEAT Gaming Chairs:
►Displate Metal Prints:
►Epic Games Store (LINUSMEDIAGROUP):
►Amazon Prime:
►Audible Free Trial:
►Our Gear on Amazon:

Twitter: linustech
Facebook: LinusTech
Instagram: linustech
LMG Clips:
Channel Super Fun:
Carpool Critics:
Title: Laszlo - Supernova
Video Link:
iTunes Download Link:
Artist Link:
Outro Screen Music Credit: Approaching Nirvana - Sugar High
Monitor And Keyboard by vadimmihalkevich / CC BY 4.0
Mechanical RGB Keyboard by BigBrotherECE / CC BY 4.0
Mouse Gamer free Model By Oscar Creativo / CC BY 4.0


  • Not going to lie. Was waiting for the "FULL BRIDGE RECTIFIER!" when talking about AC to DC conversion lol.

  • RightMark Audio Analyzer much better solution to try differnece that just ears!

  • 1:27 fuuuuuuuuuuuul bridge oh wait wrong channel

  • Linus, connect cables from headphones to another PC's mic cables, and try recording in Adobe Audition and finding noise differences on the graph.

  • Try overclocking .-.

  • I had a system awhile back...and it picked up Russian radio.. Very low volume.. but when it was silenced not working.

  • Father Linus

  • Wow that’s cool Linus uses Grado hemps

  • There was a caller at Dell tech support, who's PC would go all wonky and crash randomly, all the time. turns out the PC was next to an elevator shaft, crashed every time it went by. EMI has come a long way. since the 70's

  • Sound Blaster Audigy Z2 gang

  • Good old E-Trash from China, they build polluting factories, that produce useless things that end up in landfill 90% of the time...

  • ironically, I have a wicked audio setup, and when he played those songs they genuinely sounded amazing in my headset.... far better than the rest of the video.

  • To hear hising, u have to use active speakers, not headphone. I've experience this kind of problems, on headphones it stays hiden.

  • One of the slots on that power filter card sure looks like a conventional PCI cardslot.

  • You're not using an oscilloscope to look at the noise? That would be an objective test.

  • 3:28 Yeah, i but old hifi audio component's and a rack for 15 dollaridues and it works fine And the component are from the 80s and 90s

  • Without Anthony or someone wit actual basic electrical/audio knowledge this vid is useless. First of all I think you should use microfone recording noise as reference. I was confused Linus- were you listening to headphones or rather inside-pc-case noise? What is the testing method? Lame.

  • the only way to find if this card really works, is plug an occiloscope to the audio output, play some kind of square and sine wavess, and check the output waves fit

  • I haven't got further than the description of the card yet but wanted to say that I used a PC on a semi-truck, and when I connected the audio wired to the truck radio I would get a bad static due to some kind of power issue. I fixed it with a filter, but I imagine something like this (if it actually does what it claims) may have been helpful in that specific situation.

  • That card is literally the PC version of those magnets that are supposed to improve fuel efficiency by “reconfiguring” the fuel flow in your car.

  • PSA: A lot of those cheap DACs and Amps can actually create more interference than even the worst-offendong PCs. You may have success, but I've owned 2 Fiio DACs and one amp and an amp from another cheap company and they all sounded worse and more buzzy than the on-board audio. Also, they picked up my phone's radio interference a lot, making me think they're not shielded. (I never opened them up, because I just returned them.) I ended up with a schitt dac/amp combo. It works fine. Pricey for what it is, but it's still cheaper than audiophile stuff, so it's a decent compromise. Dunno if I'd recommend or not. The best solution for moust scenarios is to get a mobo with a sound chip you know is good.

  • Sad I missed this until now.... If that book is still available I'm buying one for my 4yr old little girl!

  • I used to hear the CD drive activity coming out of the speakers on my first PC

  • I see those Grado Hemp, Linus.

  • No way my grandma has this in her bathroom

  • Testing method was not OK. I don't know will it work at all, but on my opinion what you should have done is install some DAW software, set it for recording and check floor noise level with vs. without this mambo-jumbo card. - track level meters from DAW. There is no way that it can improve DA conversion quality or sound quality at general, but it could impact noise floor (again if it works at all).

  • Why not just buy a $40 USB audio interface at this point....... It will just have better sound period....

  • Are those Grado Hemps sitting on top of the PC?

  • so maybe measure a sine wave, and see if one can even measure any difference

  • I have a nice speaker bar, which I would need to turn up full blast, to hear that annoying "buzzzing" static.. But if i Keep it normal, barely can hear anything. While my speaker bar has no base, its for "clarity" of voices and sound, very clear, lovely, sucks no base tho. Prety sure my desktop PC with its couple of fans are much louder. But If I were to use cheaper speakers with little base or surround sound ones I have, these produce static/noise.

  • The methodology in this video is laughable. No measurements whatsoever. Waste of time.

  • Linus Drop Tips continues to deliver!

  • Concerning the AC to DC conversion at about the 2 min mark. I showed this video to my pal Mehdi Sadaghdar and he recommended that the best circuit to use would be a "FULL BRIDGE RECTIFIER!"

  • I might be able to help explain some things. So first of all, the idea of having all kinds of different caps is that different caps can in fact help filter different frequencies. But the problem here is the sound you're hearing doesn't come from them not being filtered out, its coming from the 30-80k switching speed of a stepping transformer on the board. This is a normal function of inductors and no amount of filtering caps will help that. It is being produced artificially through the switch mode power supply itself. Hell, it's even in the name. SWITCH mode. It switches its frequency so fast, it literally shakes the coil on an atomic level, and this is what you're hearing. If you're wondering why you can hear it even though it's outside of our technical hearing range, it's because the harmonic frequencies ARE in our hearing range. Hence, you we hear a whine. Playing music actually masks this, as the song is able to over-power the noise floor. Its only when it's dead silent that you'll notice it. I notice it when I'm using photoshop and I'm adjusting things like color balance. I can hear an audible high pitch noise from my PC as I'm adjusting my sliders. The second I stop, it stops. The secret to stopping this is noise isolation, which will be built into high end boards. The way it works is that all the 'noisy' stuff happens on one side of the board, then they use an isolation transformer to send that processed signal to an electrically separated part of the board, which would be the output. Since the output side is isolated, this noise doesn't end up coming out your speaker, but that doesn't change the fact that the physical inductor on the non-isolation side is still susceptible to the high speed switching that must occur. So long story short, you can almost always stop it on the speaker side, but on the PC side, that's just dependent on the physical design and engineering of the components inside.

  • what is with the 100V caps ?

  • If you're really concerned with electrical noise from the computer, get the sound card out of the computer. Use a USB DAC. Most noise in external speakers, especially powered ones, is ground loops.

  • holy shit hes using the hemp headphones

  • Hey, I knew I recognized those headphones! Recently saw them on a Dankpods video, lol.

  • D is for dram cache!!

  • Linus: my first sound card was an audigy Me: *laughs in sound blaster 16 isa*

  • I use a ground loop filter between my Pc and my amp (Fender Rumble 60W) and it does get rid of the buzz- but that is directly between the two. For under £8 it works wonders.

  • He let it fall on the floor, that's why it don't work. SCAM

  • Fit a pci slot plate optical toslink socket to the digital out pins then connect to the optical in on an external dac. As you are streaming pure pcm binary data through a non electrical connection there will be inductance or capacitance distortion through ground loops of radio frequency switching effects from components inside the case.

  • For me, worst case is when people pay $$$ for ultra super silver/gold power cord to have a better sound and they claim they here "more open sound"... This card might even work... something, but that is a measurable thing, you know, using an oscilloscope.

  • My job would probably sell that aka scholastic book fairs lol

  • I am a drone pilot and I have built my own drones and tried diffrent things and can say with complete confidence that capacitors do make a huge difference. It all just depends where you put them. On my drones there is usually one big capacitor filtering directly from the battery and a few smaller capacitors filtering out the reverse signal coming from the motors. And on a computer I would say the best place to put any kind of filtering would be on the pins coming directly out of the power supply.

  • You need to power big speakers to notice. Not tiny headphones

  • I mean, i always had a soundcard in my pc 🤷‍♂️

  • Who else fully expected him to drop the entire pc at 9:45 ?

  • Why is Linus allowed to write a book about gaming? Who authorised that? Did you see Linus play any game, like, EVER?

  • So I notice the videos from this channel are a different aspect ratio than the standard 16:9 from nearly every other channel. Just curious what it would be.

  • Back in the day when copying music to make MP3s was really pissing off Metallica, various attempts where made to make copying music from Cds hard. Some things worked to digitally protect the music on a cd, but there was always one guarenteed but really slow way to do it, and that was to play the music at high speed and use a 3.5 audio cable from the output jack to feed back into the mic jack and just record as it played. Yep it worked but in many cases that natural hissing could be herd and defeated the whole super digital copying of a 50 minute music cd in 5 minute thing that was what it was about anyway. This card "might" have fixed that, but its only 18 years to late and solving a problem as Linus clearly states in this video Not worth the trouble to deal with, like when changing the led color.

  • Woah, those are a _lot_ of capacitors

  • Maybe? Run the audio into a line in on something that can record, that can have gain added to the signal. Then run it with and without that card and see if there’s a difference?

  • G is for git gud noob

  • Why don't you just make an empty track in audacity?

  • This would benefit me I have some studio monitors (Rockit 5) and is has a very load hiss when no audio is playing. It's worse when the screen is displaying a white background such as an internet browser etc etc. Very strange, I suspect it's from my video card. Anyways, like Linus says, I'd be better off upgrading internal components or better off, buying an external sound peripheral to remove the effect as well. This seems like it'd be a LAST case scenario and even then unlikely a good choice.

  • The fact he has the Grado Hemps is fucken awesome.

  • 11:14 Yep. Like glueing a little strip of electrical tape on the ground pin of your usb cable 😬 works well

  • 9:50 Youngsters might not remember this, but there was a time that a computer without a sound card only had the PC speaker. I even got a better speaker to make some games sound better. Sorry Linus, but you're a youngster as well. Don't pretend to be otherwise, unless you've been around since at least the 8086 days. I made my own "sound card" by coying the Covox DAC design on the Centronics parallel port.

  • Yeah the fans in my new build are loud, might seek Be Quiet fans in the future.

  • Why face the fan of the PSU up not down?

  • I thought it has sli

  • Grado Hemps (Nice)

  • I've got an Aurorus 570 motherboard and I still get wicked bad static through my speakers when no audio is being played. A painful experience.

  • Hmm what about recording audio

  • Should've connected it to speakers no?

  • As manufacturers catering to the high-end audiophile market have discovered, this product's biggest failing is its price - if they bump the price up to $4K or more, it'll perform far better (just ask the "discerning listeners" who'll happily pay $7K per metre of "directional" speaker cable). The age-old axiom "a fool and his money are soon parted" applies very well here.

  • Furman makes excellent power conditioners. I don't really worry about electrical noise, but it's an easy way to protect your gear

  • Why don't linus buy some good expensive pc components from China. Always buying some cheap low quality stuffs. Then saying blablabla, it was fun to watch at first, but you are making too many videos about these things now. Nah.... I will give it a dislike.

  • If you don’t like that sapphire card’s noise i would be more than happy to adopt it from you 😅, my pc litterally sounds like a jet taking off.

  • Should have output to a recording device and evaluated it digitally instead of relying on your hearing.

  • everyone: whoa, what a scam, how could someone do that me: whoa, he bought the helps!

  • When Linus is his own ad... Mad respect :D

  • He needed a much cheaper motherboard with rubbish onboard audio - mid and upwards motherboards usually have a ton of shielding and filtering to prevent noise creeping in. External soundcards also help with this.

  • Linus, go get a shave already

  • Is vinyl lossless?

  • What's about a dirty Wifi-Connection or bad Frequenzy from network and when i install in the next pcie-Port(under the Filter- Card) Can you have seen differents?

  • wait, are those the weed headphones?

  • ohh yah i still have that sound blaster in my studio

  • There shouldn't be an apostrophe in ABCs.

  • You'd also have to put the card into the first pcie connector and put the graphics card in the second. Assuming that's how the power is wired lol. Still is a huge difference going back to the audigy it's so clean and crisp

  • Should of just opened excel/Google sheets, the white and black lines makes GPUs make a high pitched buzzing sound all the time if you have it not full screen with black background.

  • a USB audio adapter does the same thing.... for $5

  • *laughs in European quality electricity*

  • The ABCs of FBRs...

  • using a high end asus board, expected to see a difference, need an older mobo that is buzzy and hissing to try it.

  • Why didn't you hook it up to something that could make a spectrogram? Just turn on the system and see what no sound looks like through the audio output with the volume cranked up. Then put in the conditioner and re-visualize it

  • if the thing actually does what it says it does, it should decrease power supply load by reducing the reactive current. The only way to test this properly though would be to measure the current draw and not the wattage because the wattage is the active current and not the reactive current

  • To be specific those are grados hemp

  • Yes

  • I think I see a pair of Hemp-phones up on that case!!!

  • Yea its for sure a DJ Thing

  • If you were surrounded by inductive loads this could make sense. This is like, for DJ's and shit who want to have their volume at over 6000% It should be able to filter out all those very high hisses you always get when plugging multiple amps into each other. Plug your laptop into some desk speakers, plug your headphones into your speakers, crank the headphones, laptop, speakers. All that noise you're hearing, imagine that on stadium amounts of speakers. yeaaaaaaaaaaaa Gotta filter that shit out

  • I'm guessing that white noise you hear when your headphones are CRAAAAAAAAAAANKED And listening to nothing is what they're trying to filter out. Other then that, no fucking clue. The best way to produce music is with multiple headphones. Start with a semi decent pair, move onto absolute garbage, clean up with pro headset. This way you can tell how everyone will hear your music. The 1% who can here the flaws won't care enough for it to matter. They're too rich to bother with you.

  • I wonder if this card would be a noticeable difference for me..

  • The simplest answer I have found is to use a USB sound card, not a pci card which keeps the signal analog right up the exit from the sound card.

  • 5:27 Yeah David ....geez

  • Wouldn't you get an amp instead, and or use different headphones? Some headphones neeed this stuff like the 6xx And this isnt a sound crd on its won so its not what it does

  • I remember the old Fatality sound cards!