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I don't trust my car on some streets of San Francisco. Recently a friend came to visit me, and we went to a place in SF, and on our way back, we decided to roam around a bit and show him the city. On one particular street, while going uphill, my friend and my car both were very close to what...

Not very common. I think there is one from soncoz. and the fiio k9? Anyway, I have the SU-9, with which I am very happy. It will be interesting to see if Su-10 brings anything new in terms of feature as SU-9 already measures very well. Although, other than built in streamer and DSP, I can't...

How is the channel balance? Or is it digital hence, no need to test?

Other than creating an opening in the headphone cable, is there any way to measure the voltage in a loaded condition (meaning, with headphones connected)? Maybe a splitter like this? https://www.amazon.com/Gold-Plated-Copper-Female-Y-Splitter-Adapter/dp/B07CZX3N6K/

To the lazy/impatient crowd maybe? I really don't understand this SINAD criticism to be honest. Amir's reviews have so many other measurements - nobody is forced to read SINAD only. Look at other numbers, look at features, size, power etc. and then make your decision. This forum is open too...

what is a low jitter battery?

While I am not in the "never topping" camp yet, I am firmly in the "purchase topping from local dealers, pay taxes and extra if needed" camp. And not just any local sellers, sellers that won't make me ship devices back to China in case of a failure during warranty period. I asked headphones.com...

I have a feeling that having that machine near your dac can improve slam quite a bit.

i have a su-9, don't think you can do that.

the said company in China. Definitely not JDS, whoever it is.

I wish these came with laptop style power supply - the plug that goes into the power strip is small and doesn't take multiple slots like this one. Something like this would be nice too.

Your brain needs many hours of burn in to get all the technical babble spoken here.

You have an excellent knack for explaining things :). Those diagrams are all one need to know about why upsampling is done in audio. It has been 12+ years since I last played with DSP, but it was neat reading your comments. Just to confirm, with relatively sharp filters available (especially...

At this point, I am fairly confident about saying that our friend @PassionforSound doesn't really understand the relationship between Frequency (amplitude and phase) and Time domain signals, and thinks there is something about timing accuracy that isn't shown in frequency response. While many...

That won't do anything for him as in his own words "My understanding is that you cannot measure it in the analog domain". If the reconstructed signal, which is an analog signal in this case, can't be measured in someone's opinion, then in this case we can never disprove anything.

Thank you for saying that, I really appreciate it. There is just nowhere to go from there, at least for me.

Why though? That is a very flawed line of thinking. Even if your subjective experience was better with M-Scaler (and lets say it was), why do you have to assume it is because of the improvement of the timing information? Why not start with the assumption that 'we do not know the reason' and then...

This is the part I don't understand - RW claims this on head-fi and maybe other places, then goes on to do an interview (or maybe before), and nobody questions him "what is your source for this claim". Not even the interviewer who is supposed to play the role of a journalist here. A general...

I am having a similar experience with an iBasso product and Shenzhen audio right now. To say that I am very disappointed is an understatement. In my case, it was a bent usb connector and I was baffled when they asked me for a video (even after showing multiple pics). Maybe I am being cynical...

i see filter shape and attentuation results in this post https://www.audiosciencereview.com/forum/index.php?threads/chord-m-scaler-review-upsampler.35498/page-33#post-1244685