I've noticed that too, Amir knows his stuff and he's very confident when explaining it.

Thank you both. :)

@@Gabriel-of-KZfaq He should know his stuff, as a renowned computer engineer he pretty much created digital music streaming as we use it today. I can't believe he's retired and still takes time to run ASR for everybody and make these awesome videos too.

@@herrtrigger7220 Little correction: He is an electrical engineer, not a "computer engineer"

Thank you Alan. :)

Appreciate the kind remark.

Thanks Issac. There is a lot more where this came from! :)

Thanks Mark. Motivates me to produce more videos.

@@AudioScienceReview I'd love to see a round up of different sub $30 cables including dollar store RCA cables. I'd be curious what really matters.

Nah - their devoted followers are very good at motivated reasoning! I discussed this very device at a danish hifi message board. It was ... interesting!

What's the old saying- a fool and his money...

@@Abrikosmanden RealHifiHelp?

I have 2 jitterbugs and have used them in several different configurations involving different PCs, iOS device and a proper streaming bridge, and in all cases it changed the sound markedly. Mostly improved it significantly, sometimes changed the balance to the disadvantage. I too have some ifi usb purifiers, they also VERY audibly lift the quality in various configurations (never changed the balance to a notable extent). So, neither being able to measure nor to hear what is very easy to hear.. what value is provided here?

@@gioponti6359 little value if you've convinced yourself that there will be differences.

Thanks. It is a lot harder to compose text for me than to just talk. I procrastinated in setting up a video system but now that it is there, I can and will do more.

Thank you so much.

Why is he fresh air. Have you tried anything that he debunks, or is it that people who can't spend the money on such things for ligitamate reasons feel better?

Thanks and agreed. It may be easier to do a video tutorial on a topic than trying to write a white paper on the same topic.

Underrated comment

Thank you so much. Will do.

He is a smart dog. He is handling all video production for me!

@@AudioScienceReview atta boy!!! 😁😁😁😁 Waiting on the next video drop. 👍👍👍👍😬😬😬😬😬

Thanks. I cannot. Another member in China had that and post the measurements. I don't have one to test.

That's a tough one. I do plan to test the distortion of a crossover soon though.

@@AudioScienceReview That’s great news. Hopefully you can test the difference between the 2 one day and finally put to bed the argument about which type of crossover is technically better.

Always fun to see people using expensive power cables while running unbalanced RCA between the devices

Re: the power cords, I don't think the PVC jackets are good for the doggo.

I'm a re-tired electrician and electronics hobbyist for years and have been arguing and trying to explain how a 6ft power cord can in NO WAY affect the sound. They look really cool but most are so stiff they will probably end up damaging the power jack. Then I always get, "why do I hear a difference?". The same way they hear a difference when you do a blind test to compare two cords but really don't switch them.

i had this problem, and the cause was a bad mobo cap, new board cpu and ram sorted it and now i use a usb dac no noise and no filter

AudioQuest is nothing but a con company. none of the product work as what they claimed. i got tonnes of audioquest product, and nothing works better...

@@bryansu I bought 4m Rocket 22 cable one year ago. I feel really sorry I lost those $100.

I don't have a P50 to test. I have tested the D50 though with different supplies and while you can measure a bit of difference, for all practical purposes they don't do anything for it.

Compared to my good Aqvox linear power supply unit (not manufactured anymore), the Topping P50 has a more open and deep soundstage. This is done by increasing the treble level. However, the bass and slam are lacking. Instruments sound thin and not natural.

I am not an advocate for using a loaded PC power supply to feed anything analog, but as I understand it the jitterbug is a filter for the USB power supply, it does nothing to the digital stream. If you have slight noises coming from the DAC (I had major noise) their little added power filtering the power may just be enough to push it beyond your hearing threshold. Higher end DACs pay much more attention to their power supply design than the DAC itself since the end result is an analogue signal and depending upon the analogue design a super DAC can sound crap. A DAC has one purpose other than converting a digital input to an analogue equivalent nothing else, but the analog circuitry in the audio path beyond the output of the actual DAC chip will be affected by all kinds of noises being introduced on the power rails.

@@nicoras8803 Ive just stated it removed the offending noise

@@BoredSilly666 I’d love to know what DAC you’re using, because there is nothing inside the jitterbug that “filters” anything in frequencies within the range of human hearing. The only explanation for what you’re describing would be electrical interference that resulted from a poorly-designed input receiver in your DAC, that has improper shielding between the power and data circuits. Does your DAC run on USB power? Does it use the same USB port for power that it does for data transmission? If so and you experienced static, you bought a bum DAC and put a bandaid on it. This is hardly an enthusiastic reason to justify the Jitterbug for the vast majority of folks who don’t have your problem, sorry.

@@srkbear1 It was a cheap Ifi Zen Dac that has now been sold, Ive now moved on to a Chord Qutest and Network bridge but Thanks for your Concern. Next time I need someone to teach me how to suck eggs I will give you a shout.

@@BoredSilly666 That was really unnecessary. I wasn’t intending condescension in my post. If it came across that way, then I offer my apologies. I was simply saying that the focus of this video is to disprove the claims that Audioquest is making about this device transforming the quality of their music, not to address whether it can solve ground loops or static in applications that are not functioning to expectations. Peace.

He does. His dynamic range when barking is way beyond 16-bit CD format. My stomach literally rumbles from the power of his bark when it is dinner time! As to schiit, I did test their latest DAC, the Modi 3+ with that input: www.audiosciencereview.com/forum/index.php?threads/schiit-modi-3-review-stereo-dac.18480/

Wonder if that would change with a different psu. Or maybe something was grounding to the case.

Did you find a solution? I have a synthesizer and it uses separate USB data and power inputs because of this issue. And even then, you have to use an external USB battery power pack because most usb power supplies (like phone chargers) are noisy

That’s not what they’re marketed for-they’re promoted as magical devices that improve the audio for all implementations. Certainly there are isolated circumstances where DACs are poorly designed without proper filtering (Topping is not one of them), or when folks have weak links in their system that lead to ground loops or other electrical problems, where something like this expensive gizmo can put a bandaid on that problem. That’s beyond the scope of this review-he’s demonstrating that the Jitterbug is not capable of the claims Audioquest is promoting it for.

I have this problem with the motherboard’s built-in DAC/amp. I’ve seen some motherboards with usb slots meant for external DACs (gigabyte aorus z390)

I have tested a number of mastering/pro DACs from RME to Universal Audio.

@@AudioScienceReview Many thanks. RME and UAudio doesn't do "mastering" DACs, although high quality interfaces, with a premium price tag. Did you post any results you had?

Yeah same here. Killed off the ground loop buzz. No other difference but that is a clear benefit for this specific situation

Sure, if you have a poorly-designed DAC that is noisy due to an improperly shielded ground then having a device to break a ground loop is a reasonable bandaid. Problem is that Audioquest is marketing it for everyone, with claims that it magically makes your music sound superior. If it was only marketed to break ground loops they wouldn’t be pocketing the fortunes they’re making from it based on snake oil claims.

@@srkbear1 this is a common problem with focusrite scarlett interfaces and and my friend's presonus AudioBoxUSB, which are some of the most popular hobbiest/home-studio devices.

But where you using balanced or unbalanced output on these audio interfaces ? 😂 if you use the unbalanced output youre gonna get noise.

You literally just saw that it wouldn't. Go waste your money though.

I have indeed. I will see if I can collect them and do a video on them.

You can get eye candy by using food,looking usb cables and that can make you feel good. But unles those usb cables Are not broken, there is no difference in the sound. I have nice looking usb cables in topping d90 because They can be seen so nice looking cable is nice to have but I can not hear the sound difference... just like I did Expect :)