• WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required as is 20 years of participation in forums (not all true). Come here to have fun, be ready to be teased and not take online life too seriously. We now measure and review equipment for free! Click here for details.

Review and Measurements of New Topping D50s DAC

Timbo2

Senior Member
Joined
Feb 27, 2018
Messages
370
Likes
245
Location
USA
It's interesting that to isolate the Bluetooth they put in the corner away from everything else, but that required them run a long wire across the board to run the antenna. I'll leave it to others with more knowledge as to why you couldn't have used a trace on the board.
 

Gradius

Active Member
Joined
Aug 17, 2019
Messages
151
Likes
108
Location
Iquique, Chile
It's interesting that to isolate the Bluetooth they put in the corner away from everything else, but that required them run a long wire across the board to run the antenna. I'll leave it to others with more knowledge as to why you couldn't have used a trace on the board.
Well, its perfectly fine to me. They did put closer to the power stage.

The antenna cable goes directly to the connector. It's 10cm long.

If you are unhappy, you can always open it and put some duty tape on it.

You can see the cable goes a bit below on chassis, there is a line hole all across it.

It would fit the tape perfectly there if you want (if you are looking/want more bluetooth isolation).

Also, you can turn off BT completly (on menu), and only turn on when you will really use it.
 

Attachments

Last edited:

Timbo2

Senior Member
Joined
Feb 27, 2018
Messages
370
Likes
245
Location
USA
Well, its perfectly fine to me. They did put closer to the power stage.

The antenna cable goes directly to the connector. It's 10cm long.

If you are unhappy, you can always open it and put some duty tape on it.

You can see the cable goes a bit below on chassis, there is a line hole all across it.

It would fit the tape perfectly there if you want (if you are looking/want more bluetooth isolation).

Also, you can turn off BT completly (on menu), and only turn on when you will really use it.
I was talking more from a design and manufacturing cost standpoint. I'm not especially concerned from an audibility standpoint and since I don't use Bluetooth the radio is turned off.
 
Joined
Oct 8, 2019
Messages
8
Likes
0
If this is elsewhere here, my apologies for the duplicate.

I'm now solely using a D50s (was also using a Chord Qute EX that I prefer the sound of) as the convenience of Bluetooth is undeniable. I "upgraded" to Tidal Hifi, but then immediately saw that the DAC is stating 48kHz, as opposed to 192 or even 44.1. The content is one rate, but what the DAC outputs is downsampled/compromised. I also went ahead and tried Amazon HD just to see what it would render...same thing. Is there any way around this or is this the nature of Bluetooth? It doesn't sound bad by any means, but I don't need to be spending the money on any "HiFi" this or "HD" that if I'm not getting everything out of it.

Thanks for your time.
 
Last edited:

Veri

Major Contributor
Joined
Feb 6, 2018
Messages
4,448
Likes
4,742
If this is elsewhere here, my apologies for the duplicate.

I'm now solely using a D50s (was also using a Chord Qute EX that I prefer the sound of) as the convenience of Bluetooth is undeniable. I "upgraded" to Tidal Hifi, but then immediately saw that the DAC is stating 48KHz, as opposed to 192 or even 44.1. The content is one rate, but what the DAC outputs is downsampled/compromised. I also went ahead and tried Amazon HD just to see what it would render...same thing. Is there any way around this or is this the nature of Bluetooth? It doesn't sound bad by any means, but I don't need to be spending the money on any "HiFi" this or "HD" that if I'm not getting everything out of it.

Thanks for your time.
Android phone right? It's your OS resampling to 48kHz I believe.
 
Joined
Oct 8, 2019
Messages
8
Likes
0
Android phone right? It's your OS resampling to 48kHz I believe.
This is going from either an iPhone (SE;13.3.1) or a MacBook (2017;13.0.4). And let me clarify that I'm really more "concerned" with the 24/96 material, as the 16/44.1 should still be "intact" at 48kHz (which will then only really affect the MASTER and ULTRA HD offerings of either service).
 
Last edited:
Joined
Oct 8, 2019
Messages
8
Likes
0

Attachments

Last edited:

GeorgeWalk

Active Member
Joined
Sep 6, 2019
Messages
157
Likes
174
That's because you are using Bluetooth. I don;t think Bluetooth has the bandwidth to support higher data rates. I use either optical or USB and can set any rate I want.
 
Joined
Oct 8, 2019
Messages
8
Likes
0
That's because you are using Bluetooth. I don;t think Bluetooth has the bandwidth to support higher data rates. I use either optical or USB and can set any rate I want.
Hence my initial question. It appears that Bluetooth is, in fact, limited, regardless of what the literature states: "...Hi-Res Audio Wireless certificate and SONY LDAC certificate." Unless, of course, "Hi-Res" here means anything "lossless". I would still like to understand why it's not 16/44.1 when playing that content/data. If it just plain doesn't matter then I'm fine with it. And so, can anyone tell me "Yes" or "No" that I'm at least able to convert 16/44.1 correctly when using Bluetooth? The 96 and 192 content are not really of concern if the former is properly in place and functioning correctly.

Thanks for all your help!
 
Last edited:

Gradius

Active Member
Joined
Aug 17, 2019
Messages
151
Likes
108
Location
Iquique, Chile
That's because you are using Bluetooth. I don;t think Bluetooth has the bandwidth to support higher data rates. I use either optical or USB and can set any rate I want.
If you are using LDAC 990kbps you get pretty good results (for wireless). I tested here with my S8 (Android), works perfect.

That's because you are using Bluetooth. I don;t think Bluetooth has the bandwidth to support higher data rates. I use either optical or USB and can set any rate I want.
The max is by using LDAC.

More here:
https://www.soundguys.com/ldac-ultimate-bluetooth-guide-20026/

But of course, it will never compare to USB.
 
Last edited:
Joined
Oct 8, 2019
Messages
8
Likes
0
A complete test:

LDAC 990kbps (Bluetooth): 24-bit @ 96kHz

PCM: 32-bit @ 768kHz

DSD512
I'm apparently not allowed to get to the link to download the necessary tools. While I scour the Internet, anyone have a link to something I might have access to? Thanks again, folks!
 
Joined
Oct 8, 2019
Messages
8
Likes
0
Please kindly disregard. The direct link (bypassing the required authentication) didn't work, but the main one did. Here goes...
 
Joined
Oct 8, 2019
Messages
8
Likes
0
So, I enabled AptX, which changed nothing (still stuck at 48kHz, regardless of content). How does one go about enabling LDAC? Either way, it seems far from ideal for a hifi home system (or at least that's what I'm gathering).
 

ninetylol

Active Member
Joined
Dec 7, 2019
Messages
104
Likes
88
So, I enabled AptX, which changed nothing (still stuck at 48kHz, regardless of content). How does one go about enabling LDAC? Either way, it seems far from ideal for a hifi home system (or at least that's what I'm gathering).
LDAC is on android only. Sorry bro.
 
Joined
Oct 8, 2019
Messages
8
Likes
0
LDAC is on android only. Sorry bro.[/QUOT E]
Roger that. And thanks for the confirmation. Back to the Squeezebox and Chord I go. Thanks again everyone for your time on this.
 
Top Bottom