[AudioI] FW: Re: Audio Pro Soundcard for Tidal streaming
Iain Mott
mott at escuta.org
Wed Jan 17 14:39:28 UTC 2024
Jonathan,
I bought the XLR Pro board (i had already purchased the base Pro board).
I noticed something I hadn't before, that is that the analogue
"bandwidth" is rated at 96kHz - as is the bandwidth on the RCA Pro
board. The Pro Board is 192kHz/24bit. Does that mean a 192kHz/24bit FLAC
stream is first down-sampled to 96kHz in the process of converting the
signal to audio?
My other related question is: What is the advantage of using the Pro
RCA/Pro Injector cards over the old Audio Injector Stereo card? -
(ignoring the lack of volume controls and headphone jack)
Thanks,
Iain
Em 16/01/2024 19:45, jr52884 escreveu:
> Iain,
>
> I don’t know if it sends recompressed audio over the network, but if I
> was going to play audio, I would have the player running on the device
> that the soundcard is connected to.
>
> Only you can make the determination whether a 192 kHz soundcard is
> best for your application. In my application, I record radio signals
> up to 96 kHz and use single ended audio for a 60 kHz radio signal.
> What is important is reducing the noise in your system.
>
> Jonathan
>
>
> Sent from the all new AOL app for iOS
> <https://apps.apple.com/us/app/aol-news-email-weather-video/id646100661>
>
> On Tuesday, January 16, 2024, 3:36 PM, mott via People
> <people at lists.audioinjector.net> wrote:
>
> That's interesting, I hadn't realised that other players on the
> same local network would receive a recompressed signal. I may
> check this on the logitech forum. But no, both server and the
> player for my main stereo are on the same Pi and the sound will go
> direct to the card, not the network.
>
> Is there no advantage in using the card that handles 192kHz, even
> though it's connect to unbalanced inputs?
>
> Iain
>
>
> Enviado do meu Galaxy
>
>
> -------- Mensagem original --------
> De : jr52884 <jr52884 at aim.com>
> Data: 16/01/2024 17:16 (GMT-03:00)
> Para: mott <mott at escuta.org>, people at lists.audioinjector.net
> Assunto: Re: [AudioI] FW: Re: Audio Pro Soundcard for Tidal streaming
>
> Hi Iain,
>
> I thought you wanted differential audio output from the Pro. Do
> you just want single-ended (unbalanced) then? If so, you would buy
> the RCA preamp board for the Pro instead.
>
> You mentioned you are using a high fidelity streaming service.
> Will you be running it on the Pi itself or streaming the audio
> output of what you are running it on over the network to the Pi?
> If the latter is the case, you’ll be recompressing the streaming
> service’s audio to deliver it to the Pi over the network and
> losing quality. I don’t know if it will resample it, but if it
> does, you would be defeating your initial goal.
>
> Jonathan
>
>
> Sent from the all new AOL app for iOS
> <https://apps.apple.com/us/app/aol-news-email-weather-video/id646100661>
>
> On Tuesday, January 16, 2024, 1:27 PM, mott <mott at escuta.org> wrote:
>
> That's great Jonathan. The preamp is a Quad 34 with unbalanced
> inputs (rca). I'm guessing the output of XLR board will be
> better than the earlier Audio Injector Stereo (at least when
> playing 192kHz 24bit audio), but in any case, I need an
> additional quality output board for the Pi, and it'll be handy
> have a balanced interface for other things. I'll wire up or
> purchase a short XLR to RCA lead to connect to the Quad.
>
> Logitech Media Server is an excellent streaming audio server
> for Spotify, Tidal, web radio, etc. It can stream to any
> number of players (including squeezelite) on a network and
> these players can be controlled from mobile phone apps or a
> browser interface.
>
> All the best,
>
> Iain
>
>
>
>
>
>
>
> Enviado do meu Galaxy
>
>
> -------- Mensagem original --------
> De : jr52884 <jr52884 at aim.com>
> Data: 16/01/2024 13:58 (GMT-03:00)
> Para: mott at escuta.org, people at lists.audioinjector.net
> Assunto: Re: [AudioI] FW: Re: Audio Pro Soundcard for Tidal
> streaming
>
> Hi Iain,
>
> I don’t know what sort of input connections your preamp has (I
> don’t believe you mentioned it) and I’m not familiar with any
> of that software.
>
> The Pro simply presents itself as an ALSA device, like any
> other ALSA soundcard. If you require differential audio output
> for your preamp, you’ll get it with the XLR preamp board via
> the XLR connectors.
>
> Jonathan
>
> Sent from the all new AOL app for iOS
> <https://apps.apple.com/us/app/aol-news-email-weather-video/id646100661>
>
> On Tuesday, January 16, 2024, 5:25 AM, Iain Mott
> <mott at escuta.org> wrote:
>
> Thanks Jonathan,
>
> I think the description "Audio Injector XLR Preamp -
> Professional-Grade Audio Interface for Microphones and
> XLR-Based Audio Sources", confused me a little. I didn't
> initially assume that it had outputs.
>
> My Pi with have the Logitech Media Server running and
> additionally, squeezelite, to play from the server and
> send audio to the outputs of the "Audio Injector XLR Preamp".
>
> If that sounds correct I'll place my order for the Pre-amp.
>
> All the best,
>
> Iain
>
> Em 15/01/2024 17:13, jr52884 at aim.com
> <mailto:jr52884 at aim.com> escreveu:
> Iain,
>
> The XLR preamp board provides both stereo input and output
> and is how you interface the Pro with whatever you connect
> it to. If you want differential audio output, that's the
> preamp board you buy. If you want single-ended audio like
> the Stereo provides, you buy the RCA preamp board.
>
> The XLR/RCA preamp board provides the analog preamp stage
> that interfaces with the CODEC's inputs/outputs used on
> the Pro.
>
> Jonathan
>
>
> On Monday, January 15, 2024, 11:45:29 AM EST, mott via
> People <people at lists.audioinjector.net>
> <mailto:people at lists.audioinjector.net> wrote:
>
>
>
>
>
>
> Enviado do meu Galaxy
>
>
> -------- Mensagem original --------
> De : mott <mott at escuta.org> <mailto:mott at escuta.org>
> Data: 15/01/2024 12:25 (GMT-03:00)
> Para: jr52884 <jr52884 at aim.com> <mailto:jr52884 at aim.com>
> Assunto: Re: [AudioI] Audio Pro Soundcard for Tidal streaming
>
> Hi Jonathan,
>
> So the XLR preamp acts as a complete stereo interface,
> with stereo output independent of any input?
>
> Iain
>
>
>
> Enviado do meu Galaxy
>
>
> -------- Mensagem original --------
> De : jr52884 <jr52884 at aim.com> <mailto:jr52884 at aim.com>
> Data: 15/01/2024 11:47 (GMT-03:00)
> Para: mott <mott at escuta.org> <mailto:mott at escuta.org>,
> people at lists.audioinjector.net
> <mailto:people at lists.audioinjector.net>
> Assunto: Re: [AudioI] Audio Pro Soundcard for Tidal streaming
>
> Hi Iain,
>
> You simply buy the Audio Injector Pro and the XLR preamp
> board and use XLR to connect unbalanced audio to your
> preamp like you would anything else.
>
> The preamp board is needed unless you want to roll your
> own high quality op amp line drivers. The CODEC requires
> them.
>
> Jonathan
>
>
> Sent from the all new AOL app for iOS
> <https://apps.apple.com/us/app/aol-news-email-weather-video/id646100661>
>
> On Sunday, January 14, 2024, 12:20 PM, mott via People
> <people at lists.audioinjector.net>
> <mailto:people at lists.audioinjector.net> wrote:
>
> Thanks Jonathan. No, sorry, I should have explained
> better. I currently have a raspberry pi with a stereo
> audio injector card. It's connected to a Quad 43
> preamplifier and I use it for streaming Tidal. My
> turntable is also connected to the Quad and I want
> keep using the preamp. I'm interested in using the Pro
> audioinjector to make use of its processing of higher
> sampling rates, specifically, for Tidal's high
> resolution content, some of which streams at 192kHz.
> So I need to know how to wire its output to connect
> with the unbalanced inputs of the Quad 43.
>
> Iain
>
>
>
> Enviado do meu Galaxy
>
>
> -------- Mensagem original --------
> De : jr52884 at aim.com <mailto:jr52884 at aim.com>
> Data: 14/01/2024 13:27 (GMT-03:00)
> Para: mott <mott at escuta.org> <mailto:mott at escuta.org>
> Assunto: Re: [AudioI] Audio Pro Soundcard for Tidal
> streaming
>
> Ian,
>
> There are output boards available, both single-ended
> (rca preamp) and differential (XLR preamp) boards. It
> sounds like you have the RCA preamp board. You would
> simply buy the differential preamp board. Here
> <https://www.audioinjector.net/xlr-preamp> is the
> product page and it looks like you can purchase it
> here
> <https://www.aliexpress.us/item/3256806074336637.html>.
>
> Jonathan
>
> On Saturday, January 13, 2024, 11:24:28 AM EST, mott
> via People <people at lists.audioinjector.net>
> <mailto:people at lists.audioinjector.net> wrote:
>
>
> Actually, what I wrote is probably wrong, at least, if
> the diagram really does apply to the Pro.
>
>
> Output 4 is Left out +ve and Output 3 is Right +ve,
> for balanced, I assume.
>
>
>
>
>
> Enviado do meu Galaxy
>
>
> -------- Mensagem original --------
> De : Iain Mott via People
> <people at lists.audioinjector.net>
> <mailto:people at lists.audioinjector.net>
> Data: 13/01/2024 11:38 (GMT-03:00)
> Para: Holguin Daniel <cicloide at yahoo.com>
> <mailto:cicloide at yahoo.com>,
> people at lists.audioinjector.net
> <mailto:people at lists.audioinjector.net>
> Assunto: Re: [AudioI] Audio Pro Soundcard for Tidal
> streaming
>
> Thanks Fausto!
>
> I saw this diagram on github:
>
> So I'd wire the left channel RCA "tip" to Output 1 and
> the right channel tip to Output 2. Correct? Do the
> Output pins have a ground or should I wire the RCA
> sleeves to the GND on the Power pins?
>
> Iain
>
>
> Em 13/01/2024 09:21, Holguin Daniel escreveu:
>> Hi Iain.
>>
>> Yes. The first two channels are at the left. The left
>> channel on top. Usually.
>>
>> The card can output stereo.
>>
>> Fausto
>>
>> sent from a📱
>>
>> On Sat, Jan 13, 2024 at 5:01, Iain Mott via People
>> <people at lists.audioinjector.net>
>> <mailto:people at lists.audioinjector.net> wrote:
>> Hi,
>>
>> I'm interested in using the new Audio Pro
>> Soundcard for streaming Tidal
>> with a high resolution account (audio of up to
>> 192kHz, 24bit). For this
>> I'll be needing only unbalanced audio output from
>> the card to connect to
>> a stereo pre-amp and power amp.
>>
>> How should I go about making the audio
>> connections for this, please? Is
>> it just a matter of connecting a pair of RCA
>> sockets to certain pins on
>> the "OUT" section of the board?
>>
>> For my system, the Raspberry with the Pro
>> Soundcard will be running a
>> Logitech Media Server with a Squeezelite audio
>> player.
>>
>> Thanks a lot,
>>
>> Iain
>>
>>
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>
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