Bit Perfect Streaming with powered speakers plugged direct into line out

[Mountainpics]

My powered KRK monitors (speakers) are plugged directly into the RCA line outs on the back of the Wiim Pro Plus. I’m streaming music from my iPhone 15 Pro Max via wifi using the Wiim Home app and Qobuz within that app. I just want to confirm the when I play high res songs (24 bit / 192k) from Qobuz (directly out of the Wiim with no other DAC or preamp/amp etc) the sound I’m hearing is the bit perfect file that is shown in the Wiim/Qobuz interface. Does the fact that the output is RCA line out interfere with that or since the Wiim Pro Plus is acting as my DAC, is what I’m hearing is the high res file?

 

[darrenwatson]

It should send the full res audio into the internal DAC. What happens after that depends on how good the DAC is and how it's designed to operate I guess?

 

[Brantome]

Bit perfect is a term for a digital stream, so it doesn’t make any sense to use that to describe an analog output stream. The quality of that stream is related to the DAC and its output stages.

 

[Mountainpics]

Bit perfect is a term for a digital stream, so it doesn’t make any sense to use that to describe an analog output stream. The quality of that stream is related to the DAC and its output stages.

I get that…just trying to make sure that what is being output to the analog line outs is the highest resolution possible and the resolution that is showing in the Qobuz app within the Wiim app.

 

[Brantome]

I get that…just trying to make sure that what is being output to the analog line outs is the highest resolution possible and the resolution that is showing in the Qobuz app within the Wiim app.

Again, analog doesn’t have a resolution. Rest assured the DAC is processing what it shows on the WiiM app

 

[Mountainpics]

Again, analog doesn’t have a resolution. Rest assured the DAC is processing what it shows on the WiiM app

I am obviously not wording this correctly. But yes, that is all I wanted to know. The owners manual is a bit confusing because it mentions that the only way you’ll get high resolution output is if you use the coax or SPDIF outputs, but I assume that means if you’re using a secondary DAC or preamp with DAC, not if your final destination after it processes in the Wiim is the actual speakers

 

[CrystalGipsy]

Bad marketing. Resolution is only relevant to the digital file/stream and the DAC that handles them. The DAC converts digital to analogue. BIt perfect is just the transfer of data from a source e.g Qobuz to the internal DAC in the Wiim Pro or an external DAC via optical or coaxial output. Unless you apply the Wiims DSP features, by using its digital volume or its EQ features then its bit perfect.

 

[paoloinnocenzi]

It is not clear, I connected the amplifier to the wiim via RCA cables. At how many bits will I listen to the high resolution qobuz music.?

 

[harkpabst]

It is not clear, I connected the amplifier to the wiim via RCA cables. At how many bits will I listen to the high resolution qobuz music.?

As many bits as Qobuz delivers.

As soon as the digital data stream has been converted to an analogue signal there are no bits any more. An analogue signal converted from a higher bit depth digital signal has (potentially) lower (quantisation) noise.

 

[paoloinnocenzi]

The COAXIAL cable and the OPTICAL cable in the Wim menu have a bit and khz adjustment, instead the connection with the RCA cable has no adjustments.

Why?????

If I connect the amplifier to the Wim via RCA cable at how many bits and khz will I listen to high definition music?????

 

[harkpabst]

The COAXIAL cable and the OPTICAL cable in the Wim menu have a bit and khz adjustment, instead the connection with the RCA cable has no adjustments.

Why?????

If I connect the amplifier to the Wim via RCA cable at how many bits and khz will I listen to high definition music?????

That's for the input that goes into the WiiM's ADC, not for the output.

 

[jed1]

According to ASR, WiiM Pro Plus has RCA output with measured SINAD between 113.5dB and 114dB, which is equivalent to 18.6 bit. Current state of the art DAC's reach to ENOB (effective number of bits) of 20.3 bit or SINAD of 123.8dB such as SMSL SU-10 and Topping D90 III. 120dB or greater is considered beyond human hearing limit.

 

[paoloinnocenzi]

The COAXIAL cable and the OPTICAL cable in the Wim menu have a bit and khz adjustment, instead the connection with the RCA cable has no adjustments.

Why?????

If I connect the amplifier to the Wim via RCA cable at how many bits and khz will I listen to high definition music????

This applies to the input going to the WiiM's ADC, not the output.

What did you write? So he doesn't understand anything.

Can you give a sensible answer?

 

[paoloinnocenzi]

What did you write? So he doesn't understand anything.

Can you give a sensible answer?

Can you answer my question?

 

[QuarryHunslet]

@paoloinnocenzi Please post your comments in English.

 

[paoloinnocenzi]

the COAXIAL cable and the OPTICAL cable in the Wim menu have a bit and kHz adjustment, while the connection with the RCA cable has no adjustment.


Why??????

If I connect the amplifier to the Wim via RCA cable, at how many bits and kHz will I be able to listen to high definition music?????

 

[harkpabst]

the COAXIAL cable and the OPTICAL cable in the Wim menu have a bit and kHz adjustment, while the connection with the RCA cable has no adjustment.


Why??????

If I connect the amplifier to the Wim via RCA cable, at how many bits and kHz will I be able to listen to high definition music?????

Sorry, your question makes no sense. If you don't understand my answer, please use an online translation service.

Input and output are totally different things. This should be easy to understand.

 

[Sylvain]

Maybe, because optical and coaxial are digital and RCA analog.

Then RCA give PCM

the COAXIAL cable and the OPTICAL cable in the Wim menu have a bit and kHz adjustment, while the connection with the RCA cable has no adjustment.


Why??????

If I connect the amplifier to the Wim via RCA cable, at how many bits and kHz will I be able to listen to high definition music?????

Maybe because, optical and coaxial cable, transfer digital data, and RCA transfers analog data.

RCA transfers PCM data, That's what I understand.

sorry if I'm mistaken.

 

[Burnside]

the COAXIAL cable and the OPTICAL cable in the Wim menu have a bit and kHz adjustment, while the connection with the RCA cable has no adjustment.


Why??????

That’s because the coaxial and optical outputs are digital where terms like bit depth and sample rate mean something. The RCA/line-out output is analogue and terms like bit depth and sample rate mean nothing.

The WiiM’s DAC will accept a digital stream of up to 24/192 from Qobuz and then convert that to analogue for output over the line-out RCA connection.

If I connect the amplifier to the Wim via RCA cable, at how many bits and kHz will I be able to listen to high definition music?????

As above, that’s not a sensible question to ask of an analogue RCA output.

 

[harkpabst]

RCA transfers analog data

RCA stereo line out transfers analogue data.

RCA S/PDIF coaxial out transfers PCM data.