Even if there's very little audio-frequency attenuation, it's possible for higher frequencies to produce audio-frequency intermodulation distortion, and filtering could reduce this. This is one reason "high definition" (ultrasound sampling rate) audio is a bad idea as a listening format.
In 2013 I bought out 2 Radio Shacks worth of ferrite beads when I was hunting down signal noise in my senior design project (CNC mill rebuild and update.)
All else fails, add more beads.
Also, I learned that you can make your own shielded flat cables with aluminum duct tape.
Who knew that they had a really good reason for using 48V signaling in the original machine controls from 1986?
Maybe you’re right. My experience is with radios, where it’s possible that high frequency noise is conducted into the RF section rather than into the audio amplifier. I know that in one case, both my transmitted signal and received audio output were absolute garbage (edit: because it was picking up noise from the vehicle ignition) until I added a choke to the power input wiring.
What’s with the animosity towards Schiit? They seem to make decent products. Noise from using USB power delivery for audio devices is common.. that’s why you can (and should) use the dedicated power input to you DAC/amp
The above review specifically goes into the problem from OP.
There's also their amplifier with a rather non-standard architecture that tries to solve a non-problem (injecting feedback in a NFB loop - I might remember wrong, if so, forgive me) which leads to it measuring double digit (!) THD if you feed it a sine wave. I'm not an experienced engineer but it is IMO a non-starter to have an amplifier try to decide what is and isn't a musical signal as part of its protection circuitry, short of detecting DC offsets or shorts (pun not intended). I'm not in the market for a 1800$ amplifier that goes bzzzt if you feed it music it disagrees with [1]
>Noise from using USB power delivery for audio devices is common.. that’s why you can (and should) use the dedicated power input to you DAC/amp
I don't disagree with your point. However, a company designing products like these should be able to design a filter for this usecase unless you're trying to use your DAC as a a measuring device, or there is something seriously wrong with your motherboard. I honestly haven't heard of any other brand product with this problem unless it's ~20 years old and in need of repair. It doesn't cost much in the BOM, however it does cost in engineering hours/competence and QA and this is something that should have been caught by the latter.
Edit: I just want to add that I don't want to hate on Schiit. Honestly I'd like new audio companies to succeed and I applaud them for rejecting MQA back in the day and for not going all-in on the audiofool bullshit one sees too much of. But seeing such poor engineering and QA leaves a sour taste in my (electronics engineering) mouth. Maybe they have improved lately, I wouldn't know. I'm not really in their market anyways.
> No doubt you have noticed my frequent use of terms "nice" and "excellent" and that sums up the performance of Modi+. At this price point, we don't expect objective perfection but competent engineering and that is what we have. Physically, the unit is solidly built and of course supported by an English speaking US company. For people with such preference, the Modi+ provides an excellent option. That they can stay competitive with far east audio companies is definitely a feather in their cap.
> I am going to recommend the Schiit Modi+ DAC. Great to see Schiit continue the (new) tradition of optimizing objective performance as they cater to their traditional audience.
Look, if it works for you and you're happy with it - keep it. More power to you.
I just know that if I handed over something with such shoddy soldering to a customer, I'd lose my job or at the very least lose soldering privileges. But I am working with things that cost slightly more than 99$ that you can't find on store shelves :)
Schiit Audio makes great stuff, I've been using it for years and have other gear as well to compare to. I think it's good for what it is, although their pricing has gone a bit out of control lately. The problem here is not the maker of the DAC, it's that it's bus powered over USB, which is a problem regardless of who makes it.
Yes! I went there on my first trip to Portland last year for work.
It was mesmerizing to look at all the beautiful equipment and meet all the cool people there. I've forgotten his name, but I spent at least one hour with an ex-Tektronix employee who started his career with tubes and ended it with writing FPGA code who told me many wonderous stories from his career. Highly recommended if you're at all into electronics!
Wealth tax on houses (and apartments, cabins etc..) are calculated as 25% of market value up to 10 MNOK and 70% over that. So you'd need to own a rather luxurious house before having to pay a rather modest tax.
Some municipalities also have a separate property tax which iirc is usually an order of magnitude lower than the wealth tax.
Never mind hobbyists - I work in electronics R&D and my two favorite suppliers are US based even though I am not. Anxious to see how this plays out and that's not even considering our production departments.
I don't know where you guys are looking - both Farnell and RS Components, which are UK based and among the suppliers I use the most at work, stock leaded solder. There are other suppliers more local to me that stock it as well.
It's not like it's banned or anything, it's just not allowed to be used in (most) consumer electronics.
