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Product Description
The Yulong DA9 combines a DAC, a powerful class A headphone amplifier, and a high-current preamp in one high-end, fully balanced unit. The DAC supports DoP64 and DoP128, and up to 384kHz/24bit PCM and native DSD256 Read More
I've built my own dht stuff for 20 years and bought a lot of dac boards for myself and friends. I'm no fan of aks or esses I stick with pcm 1702 and the other classic chips. They sound good and don't fail but more importantly don't ever expect an opamp to make music. discrete class A is entry level. If it hasn't got it. its gold plated audiophool
For this kind of money 'just' 24 bit and 384 HZ. Not even 32 bit? Does it have MQA decoding inside? DSD 1024? Roon ready? And what's with the back to the 70 look
I wish these devices weren't called 'Dac/Amp'. With no analog input, it doesn't qualify as an 'amp', in my mind - I want to be able to amplify an analog signal of my choice, and not be limited to whatever dac chip the maker has used in the box. Without that kind of flexibility, this is way overpriced IMO, $300 more than the Schiit Jotunheim or Audio-GD dac/amps that actually function as amplifiers, by providing analog inputs that bypass the internal dac chips.
MartijnvanderStarThat would require a whole different amp technology that is typically not for 99% of the headphones out there. If that's what you're looking for, look for ones directly from Stax or KGHSSV/Mjolnir.
All of this is moot. I have one of their earlier DAC/Amp models (the D100) which I like very much. However, recently it began to have problems, which I think are simple software problems involving the drivers for my amp and I have been unable to find anyone who can trouble shoot this problem. I've sent them a couple emails but never got an reply. So I called them and no one spoke English, so of course couldn't get help. They don't seem to have any support at all in the US. You're on your own. Good luck! I have to throw this unit away for what appears to be a very minor problem, but ultimately that's probably have to do. Bottom line: Yolong is a good manufacturer of hi-fi equipment, make sure you can get support for it before you buy. (And if you do find a source of support, please let met know. ( DorianLS@aol,.com ). Thanks.
DorianLSDid you try using a translator when you contacted Yulong via email? I've had success contacting Chinese dealers for support using Google Translate. They were using the same to reply. Syntax and grammar were a bit challenging but the outcomes turned out well overall.
Edit: TBH, I haven't needed to contact Yulong about my D8 (thankfully). So I have no idea how they are with support.
SNR can be expressed as the difference between power of signal in dB and the power of noise in dB. So -130 dB of SNR actually means that the signal is deeply buried in the noise. Who would knowingly advertise their product like that?
E.WoodMr. Wood, !it seems you are knowledgeable and using your good common sense.
I believe you misunderstood the industry standards.
is is exactly backwards from what you are asking.
It’s meant that the noise is at a level 130 dB under the signal. That is actually a very good specifications that most manufacturers are entitled to feel very proud of disclosing.
hope this helps clarify a little bit.