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I'm using a Marantz NA7004 streamer as my DAC for this experiment.
When I use the Marantz on my favorite station it has a nice sound. But when I connect my laptop via a 10 foot USB cable to stream the same station it seems to loose something.
Am I imagining this or is this a real thing?
Does the digital USB have ANYTNING to do with the sound card of the laptop?
Could it be that inputting the digital signal to one of the USB inputs vs the internal connection is the cause?
I'm also starting to look into connection my laptop via wifi to my DAC. Which does not have a wifi connection. Any economical and simple suggestions for that?
At some point in the future I will be buying a wifi ready unit. But until now it's stickily an add on.
Thanks
Charles
Follow Ups:
The difference between the two is likely jitter related - there are two USB modes of transferring data; asynchronous and synchronous. In the former, the client (i.e the DAC) controls the data transfer rate using its own internal clock and will confirm packet receipt with the source. This greatly reduces jitter. In the synchronous mode, the source controls the data transfer and noisy power supplies for the PC as well as internal noise from the PC can make the sound much more prone to jitter.
The long cable is also not helping since RF noise can be coupled into the cable and into the DAC.
I don't know which mode your DAC is working in, but I would suspect jitter to be the culprit.
One solution is a USB to SPDIF converter and then feed the optical output into the DAC. Optical cables used to be an inferior method of digital transfer, but well designed modern DACs are largely immune to input jitter and optical cables have the advantage of avoiding ground loops. Or you could use a 75 ohm digital SPDIF cable if you prefer. If you hear no improvement with any of these suggestions, then probably the Marantz doesn't have as robust a digital interface receiver interface as audiophile DACs. You don't need to spend mega $$ to solve the problem, but you may need to be prepared to spend a little on cables and a USB/SPDIF interface like the Topping D10S which will be a good upgrade for about USD99.
Regards Anthony
"Beauty is Truth, Truth Beauty.." Keats
Off Amazon, and use it with the Marantz. Either digital in to the Marantz, or analog in.
Cheap easy setup, good app, excellent sound.
"Does the digital USB have ANYTNING to do with the sound card of the laptop?"
Of course not. The soundcard convert digital to analog, just like your DAC. You can only feed a DAC digital data, not something analog.
The Well Tempered Computer
Ok, and a 10 foot run won't loose data either?
I know this isn't an analog signal where you start getting impedance problems. But I was wondering if some of those 1's and 0's get lost on the way over??
won't *lose* anything but can pick up noise.
Still unsure of exactly what your sources are!
Sorry for the confusion. My source is a laptop and I want to get the audio to my non wifi DAC.
but ideally used in closer proximity. In my world, there are two separate pipelines: 50' ethernet from office router up to listening room - but to ultraRendu endpoint. Attached to USB input on DAC with half meter cable.But if I understand previous posts, your DAC is actually contained within the Marantz streamer. Why isn't it the source (as intended)?
BTW, I'm not aware of any "WiFi DACs" unless you include multi function devices. What it usually supported by WiFi is the endpoint which takes the music server data packets and converts them to a standard digital format that DACs understand: AES, S/PDIF coax, Toslink optical, USB, HDMI, etc.
For example, I use LMS (Logitech Media Server). It is hosted on a NAS (where the file based music is stored on mirrored SSDs) connected to the GB router via ethernet. The AT&T Fiber modem is likewise connected to the router to provide radio and subscription services. What makes the music is the endpoints that are fed by the media server. Here's what is arguably the most cost effective endpoint on the planet - Raspberry Pi in earlier 3B form running piCorePlayer connected via WiFi. With a 600 MB buffer, it is essentially memory playback. With the older model, I use an Allo DigiOne S/PDIF HAT that feeds the DAC enabled integrated amp via coax. It streams consistently with 192/24 content.
Control via watch/phone/pad/PC.
Edits: 07/28/24
"But if I understand previous posts, your DAC is actually contained within the Marantz streamer. Why isn't it the source (as intended)?"
Yes, the steamer and DAC are one unit. I can get vtuner stations on the streamer but the process of finding stations is painfully difficult. What I would like to do is use the laptop to find new stations. Which is FAR easier then pecking through the menu on the Marantz.
If I was just doing this then cabling is no problem But in the future I would like to have a quick and easy selection process. Besides, my streamer is 13 years old and I'm just waiting for something, like an update, to kill it.
is for your endpoint(s) to have access to content from all sources.
Have no idea of your physical layout, but in that case the laptop needs to be close to the DAC.
Sorry I can't answer your question but I am so glad to see your text. I was worried you took that jeep and got lost in the hot Arizona desert. Glad you are well. Welcome home.
Oh yeah. We were out two days ago off roading to Camp Stuart and the temps hit 117°. We don't use the AC when we're off road because don't want to over stress the engine out there.
found on both your laptop and Marantz streamer for network connectivity. Presumably, you have a home network with router to which each attaches.
USB is primarily intended for short streamer to DAC runs when those are separate units as is the case in my system (ultraRendu to DAC8).
WiFi is useful when running ethernet is not possible. I do so with garage system in semi-attached garage. Music server lives in office feeding multiple music and video endpoints around the house.
I'm trying to look research finding a device.
What I have to figure out is outputting the sound to a receiver putting out a digital signal to my DAC.
"outputting the sound to a receiver"
From what source?
"putting out a digital signal to my DAC"
From what source?
From my laptop to my non wifi capable DAC.
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