[caprimulgus]

Yes, the codec library provided by LDAC for the Bluetooth chip(CSR8675) does not support USB in currently. So the LDAC Bluetooth codec is not supported when using the BTA30 as USB DAC and transmit Bluetooth signal. We are also trying to communicate with Sony for this problem now.

Best regards

OK, so LDAC over USB is something you are actively trying to pursue? OK cool!

But what about dual-link AptX-LL - can you please respond to my other question about dual-link AptX-LL, and why it has been left out? (Dual-link AptX-LL is possible to implement, and you previously said that it would be - is there a reason this has changed?)

 

[Kean FiiO]

OK, so LDAC over USB is something you are actively trying to pursue? OK cool!

But what about dual-link AptX-LL - can you please respond to my other question about dual-link AptX-LL, and why it has been left out? (Dual-link AptX-LL is possible to implement, and you previously said that it would be - is there a reason this has changed?)

Thank you for your attention and feedback for BTA30.
In order to make BTA30 more functional and cover more usage scenarios, we have tried our best to adjust hardware and software architecture . For this reason, it also led to serious delays in the project. Until it goes on the market, we are still optimizing the design to obtain more stable functions.
However, due to the limitation of chip resources, it is impossible to take care of every function. In the end, only most usage scenarios or requirement can be taken into account.
For example, LDAC LIB can support I2S format only, such as transmit from DSP through S/PDIF interface . It's a pity that BTA30's USB DAC decoded and transmit by CSR8675 itself！
We suggest customersl connect computer's optical interface to achieve LDAC transmission, which can achieve high-quality transmission and better compatibility than 48k/16bit.
Please refer to the following diagram about the signal path.

Regarding aptX LL cannot be dual-linked, there is not enough ROM space to support this function after implementing bidirectional LDAC, aptX, aptX HD and APP control.

Although the BTA30 is not the most perfect, it is still the most functional and powerful among similar products. The features can match the user's general requirements.
Of course, we will collect your feedback, and try to achieve more situation needs in the next generation or high level products.
Thank you.

 

[Strifeff7]

Thank you for your attention and feedback for BTA30.
In order to make BTA30 more functional and cover more usage scenarios, we have tried our best to adjust hardware and software architecture . For this reason, it also led to serious delays in the project. Until it goes on the market, we are still optimizing the design to obtain more stable functions.
However, due to the limitation of chip resources, it is impossible to take care of every function. In the end, only most usage scenarios or requirement can be taken into account.
For example, LDAC LIB can support I2S format only, such as transmit from DSP through S/PDIF interface . It's a pity that BTA30's USB DAC decoded and transmit by CSR8675 itself！
We suggest customersl connect computer's optical interface to achieve LDAC transmission, which can achieve high-quality transmission and better compatibility than 48k/16bit.
Please refer to the following diagram about the signal path.


Regarding aptX LL cannot be dual-linked, there is not enough ROM space to support this function after implementing bidirectional LDAC, aptX, aptX HD and APP control.

Although the BTA30 is not the most perfect, it is still the most functional and powerful among similar products. The features can match the user's general requirements.
Of course, we will collect your feedback, and try to achieve more situation needs in the next generation or high level products.
Thank you.

how to transmit LDAC from pc to bluetooth headphone?

PC optical - BTA30 - LDAC Bluetooth - Headphone

is this correct ?

 

[Kean FiiO]

how to transmit LDAC from pc to bluetooth headphone?

PC optical - BTA30 - LDAC Bluetooth - Headphone

is this correct ?

Yes, you are correct. Great！

 

[caprimulgus]

Although the BTA30 is not the most perfect, it is still the most functional and powerful among similar products. The features can match the user's general requirements.
Of course, we will collect your feedback, and try to achieve more situation needs in the next generation or high level products.

OK, thanks for your response.

It's a pity, because I think those two things are specific use cases that people would be hoping for this product. Namely, using as LDAC transmitter with computer over USB for those without optical output, and dual-link AptX-LL for watching movies with partner while baby sleeps, for example.

For me, especially the latter is the main use I would have for this device! I hope you consider for a future version!

 

[Strifeff7]

OK, thanks for your response.

It's a pity, because I think those two things are specific use cases that people would be hoping for this product. Namely, using as LDAC transmitter with computer over USB for those without optical output, and dual-link AptX-LL for watching movies with partner while baby sleeps, for example.

For me, especially the latter is the main use I would have for this device! I hope you consider for a future version!

this
I would instantly buy it without second thought.

 

[FiiO]

so the LDAC is only on receiver mode?

or can I do this ?
PC, usb to BTA30, bluetooth LDAC, fiio btr5, iem,

Dear friend,

In TX mode, LDAC is available when using coaxial and optical input.

PC, usb to BTA30, bluetooth LDAC, fiio btr5, iem,--No, but you could use other Bluetooth codec instead. Or use coaxial and optical input.

Best regards

 

[Lockheed7]

this
I would instantly buy it without second thought.

Same. I am concerned about USB LDAC transmission only.
I am glad that FiiO is trying to solve this, and actively responds to our feedbacks.
Right now the only solution I see is to buy a K5 Pro to connect them together with provided RCA (like it is shown on one picture of BTA30) and connect the PC to the amp with a jack cable.
However, this is pretty much overkill for my usecase, because I can't use larger speakers in a small flat (although I have one 2.1 with huge subwoofer), maybe in the future.
Right now, I have a Sony bluetooth headphone and portable speaker kboth have LDAC) and my PC doesn't have any bluetooth and connecting them via jack is not comfortable.
If I find a more affordable temporary solution I will order the BTA30.

 

[ennsbq]

Same. I am concerned about USB LDAC transmission only.
I am glad that FiiO is trying to solve this, and actively responds to our feedbacks.
Right now the only solution I see is to buy a K5 Pro to connect them together with provided RCA (like it is shown on one picture of BTA30) and connect the PC to the amp with a jack cable.
However, this is pretty much overkill for my usecase, because I can't use larger speakers in a small flat (although I have one 2.1 with huge subwoofer), maybe in the future.
Right now, I have a Sony bluetooth headphone and portable speaker kboth have LDAC) and my PC doesn't have any bluetooth and connecting them via jack is not comfortable.
If I find a more affordable temporary solution I will order the BTA30.

How do you connect BTA30 to K5Pro? There is only RCA out on BTA30 or am I missing something?

 

[Kean FiiO]

How do you connect BTA30 to K5Pro? There is only RCA out on BTA30 or am I missing something?

BTA30 has RCA output for analog audio signal， and coaxial+optical output for digital audio signal. K5pro has same one，so you can connect them through RCA or coaxial， or optical.

 

[ennsbq]

BTA30 has RCA output for analog audio signal， and coaxial+optical output for digital audio signal. K5pro has same one，so you can connect them through RCA or coaxial， or optical.

I mean whats the point connecting K5Pro through BTA30? You'd still need to connect BTA30 to your PC first then, right?

EDIT: To be clear I'm talking about TX mode. I still don't get how combining K5Pro, BTA30 (and an AMP?) will solve USB LDAC transmission mentioned before. Or I completely misunderstood what Lockheed7 was talking about

 

[Lockheed7]

I mean whats the point connecting K5Pro through BTA30? You'd still need to connect BTA30 to your PC first then, right?

EDIT: To be clear I'm talking about TX mode. I still don't get how combining K5Pro, BTA30 (and an AMP?) will solve USB LDAC transmission mentioned before. Or I completely misunderstood what Lockheed7 was talking about

It is a desktop DAC and amp.
https://www.fiio.com/k5pro

Edit:
This Image:

 

[Lockheed7]

Thank you for your attention and feedback for BTA30.
In order to make BTA30 more functional and cover more usage scenarios, we have tried our best to adjust hardware and software architecture . For this reason, it also led to serious delays in the project. Until it goes on the market, we are still optimizing the design to obtain more stable functions.
However, due to the limitation of chip resources, it is impossible to take care of every function. In the end, only most usage scenarios or requirement can be taken into account.
For example, LDAC LIB can support I2S format only, such as transmit from DSP through S/PDIF interface . It's a pity that BTA30's USB DAC decoded and transmit by CSR8675 itself！
We suggest customersl connect computer's optical interface to achieve LDAC transmission, which can achieve high-quality transmission and better compatibility than 48k/16bit.
Please refer to the following diagram about the signal path.


Regarding aptX LL cannot be dual-linked, there is not enough ROM space to support this function after implementing bidirectional LDAC, aptX, aptX HD and APP control.

Although the BTA30 is not the most perfect, it is still the most functional and powerful among similar products. The features can match the user's general requirements.
Of course, we will collect your feedback, and try to achieve more situation needs in the next generation or high level products.
Thank you.

What is the schematic diagram of M5 player if it can transmit LDAC in USB DAC mode, or it can't either?

 

[ennsbq]

It is a desktop DAC and amp.
https://www.fiio.com/k5pro

I can only see RCA out on BTA30. So the only way to connect them both from a PC would be through BTA30 first? What is the point of using K5Pro here if I want to use it for USB LDAC transmission?

What is the schematic diagram of M5 player if it can transmit LDAC in USB DAC mode, or it can't either?

As far as I know M5 can't do it, but M6 can.

 

[Lockheed7]

I can only see RCA out on BTA30. So the only way to connect them both from a PC would be through BTA30 first? What is the point of using K5Pro here if I want to use it for USB LDAC transmission?



As far as I know M5 can't do it, but M6 can.

Yes, you got me. I see it now.
No RCA Input, just Output.
It is only good if you use this as a receiver.
Then it looks like this is really designed to be standalone.
Yes I think I was wrong about M5 too as well, I wanted to say M6.
I really wonder how can the M6 player transmit LDAC in USB DAC mode, as it is clearly stated on the site.