Any Amp with I2S inputs?

[cobby]

Simple question, my search didnt brought me that far so i ask by this post.
Any one aware of class d amps who offer a I2S input beside the regular analog inputs?
TAS6424 and TPA3255 should offer I2S, but i see no amps offering this feature.
Would be nice to avoid this uneeded conversion.
Thanks

 

[TSB]

Digital 'conversion' is losless, using I2S externally makes no sense, this is why optical outputs / HDMI exist..

 

[cobby]

Am looking for amps, premade or as pcb who bring out the i2s inputs.
There are some chipsets who can use digital signals natively, like TAS5825M and others.

Edit: i am wrong in regard of the TPA3255, this one dont have I2S, but other class d chipsets does, which product offers these?

 

[BDWoody]

Would be nice to avoid this uneeded conversion.

It seems the I2S is what is unneeded.

What benefit do you believe you will be getting over the connections that use common standards like spdif or HDMI as mentioned earlier?

If it's more than just an exercise to see what's possible, you may want to look into it a bit more.

There is a reason there is no standardized I2S connection: it wasn't meant to be used for this.

 

[cobby]

i do like the idea to keep the signal digital as long i can, leveling is also the easiest and always optimal this way.
am just looking around atm, the lack of amp desgins offering i2s inputs is of course is keeping me back.
some fiddling with the i2s protocoll is maybe doable for me.
but benefits are probably small.

 

[BDWoody]

i do like the idea to keep the signal digital as long i can,

Spdif and HDMI are digital connections. You are only losing convenience and I'm yet to understand even any potential benefit.

...leveling is also the easiest and always optimal this way.

I don't know what that means.

 

[DVDdoug]

There is a reason there is no standardized I2S connection: it wasn't meant to be used for this.

Right! It was intended for internal connections. A manufacturer can use it between chips or between boards inside and electronic device. They know the requirements/protocol between the chips/boards or they may be able to program the transmitters & receivers to work together.

 

[MCH]

Well, if such amps exist, it would be an easy cool way to have multichannel (out of the gpio pins of a rpi5 for instance) without the need for a multichannel DAC.

 

[cobby]

Spdif and HDMI are digital connections. You are only losing convenience and I'm yet to understand even any potential benefit.



I don't know what that means.

am not refering to spdif or hdmi.
to what my little search on the web brought up was that there are class d chipsets who offers a I2S input.
their only benefit seems to be that the still needed DAC is inbuild in these chipsets and you can go directly digital to your speakers, f.e.over SPDIF (of course a further lossless conversion to I2S would be needed).
The "leveling" benfit i see would be that you dont need to take care for max input and output levels of your DAC/Preamp/Amp.
On a quick look the amps offering I2S inputs also offer I2C inputs/outputs for volume control and are offering nice extra data.

 

[Power Pop 23]

Simple question, my search didnt brought me that far so i ask by this post.
Any one aware of class d amps who offer a I2S input beside the regular analog inputs?
TAS6424 and TPA3255 should offer I2S, but i see no amps offering this feature.
Would be nice to avoid this uneeded conversion.
Thanks

The 'original' Peachtree Audio 'Carina' integrated amplifier has an I2S input. This variant has zero analog inputs. It is no longer in production. Peachtree Audio is selling 'recertified' samples from their website:

Carina (Original) (Recertified)

SAVE ON A FACTORY RECERTIFIED CARINA! Peachtree recertified products are inspected by our in-house technicians and perform and function as new. They may have minor cosmetic blemishes. The owner's manual and accessories are included. We back your recertified Carina with our same-as-new two year...

www.peachtreeaudio.com

https://cdn.shopify.com/s/files/1/0401/9490/0118/files/Carina_Manual.pdf?v=1668579159

 

[Berwhale]

Here's one... https://store.sure-electronics.com/product/AA-AB32256

 

[cobby]

The 'original' Peachtree Audio 'Carina' integrated amplifier has an I2S input. This variant has zero analog inputs. It is no longer in production. Peachtree Audio is selling 'recertified' samples from their website:

Carina (Original) (Recertified)

SAVE ON A FACTORY RECERTIFIED CARINA! Peachtree recertified products are inspected by our in-house technicians and perform and function as new. They may have minor cosmetic blemishes. The owner's manual and accessories are included. We back your recertified Carina with our same-as-new two year...

www.peachtreeaudio.com

https://cdn.shopify.com/s/files/1/0401/9490/0118/files/Carina_Manual.pdf?v=1668579159

bit pricey just to give it a try, but good find for sure.

 

[cobby]

Here's one... https://store.sure-electronics.com/product/AA-AB32256

oh, very nice, thats what i was looking for, thanks!

 

[antcollinet]

am not refering to spdif or hdmi.

Why not? What benefit to you expect I2S to bring compared to SPDIF, Toslink, or HDMI?

 

[cobby]

Why not? What benefit to you expect I2S to bring compared to SPDIF, Toslink, or HDMI?

i have no problems with spdif, hdmi or else, its just that some chipsets offering i2s inputs which can be used.

 

[Mikig]

in general, so I have always read:
i2S skips the receiver input and goes directly to the converter.
Furthermore, while the USB cable also carries the current, i2S does not.
Another problem that i2S should solve is when you have noise disturbances on the USB outputs that can be present in older or less cared for devices.
However, this implies having to add an external DDC that contains clocks, receiver, and USB isolator.

whether this leads to a dramatic upgrade in sound, I don’t know.
What is certain is that new and modern devices no longer suffer from such problems. They measure well from every point of view, a result that certifies that modern hardware has now surpassed the old problems…

 

[BDWoody]

whether this leads to a dramatic upgrade in sound, I don’t know.

To my knowledge, no one has ever provided evidence of any upgrade in sound, let alone a dramatic one.

 

[Mikig]

To my knowledge, no one has ever provided evidence of any upgrade in sound, let alone a dramatic one.

I have no idea either.

What I know is that I tried, putting a small DDC Smsl, between computer and Dac, via HDMI cable.

Used or not, to me frankly it seems the same in terms of sound.
My point was to have a more modern output to the DAC, since my computer is more than 10 years old and that in a certain way did not carry with it the electrical noises of the computer itself.
I still use it for that reason. But perhaps, a USB isolator would have done the same.

 

[Roland68]

Simple question, my search didnt brought me that far so i ask by this post.
Any one aware of class d amps who offer a I2S input beside the regular analog inputs?
TAS6424 and TPA3255 should offer I2S, but i see no amps offering this feature.
Would be nice to avoid this uneeded conversion.
Thanks

May I ask what your source for the I2S data stream is?

 

[antcollinet]

i have no problems with spdif, hdmi or else, its just that some chipsets offering i2s inputs which can be used.

It isn't, because it was never intended as an external interface. It is designed as a chip to chip interface. Other interfaces - as mentioned are specified and suitable for external component interfaces. Just choose a device which uses those.