I can basically only repeat myself, I'm looking for a dac that has the additional feature of a built in Bluetooth transmitter. If a standalone device for less than 100€/$ can receive a signal via toslink or usb and transmit a BT signal, why should it suddenly be expensive to add something like this to a dac?
1. Because it's made by companies that aren't practically randos on AliExpress. And also
2. Also by "expensive" it's not just the device itself, it's that it
doubles on some equipment depending on what exactly it is you're trying to do, in other words the reason why it's important for me to know what you already have and what exactly you're trying to do ie how you want the signal to flow is important so you
don't spend on devices that could otherwise do the same job ie streamline your overall expenditure.
3 .If you already know such a device that can do that then just get that one.
4. If you mean the $100 device is just a DDC and you're thinking you just cram that into a DAC, here's the problem: your use case (which I still don't completely understand, since you can't lay it out clearly other than repeating yourself) is presumably so esoteric while DAC manufacturers make their chassis as small as possible so now you have to go with a larger DAC that instead of having features that a larger chunk of the market needs needs a niche feature that you're looking for that might actually already be built into other devices and can be done without a "DAC with a BT transmitter."
Because, again, the core problem with asking for a "DAC with a BT transmitter" is that the DAC will DAC the D to C it into an A, but BT transmits in D signals. Therefore why would you DAC ie C the D signal into an A signal when what you want is to send it out as a D signal which then requires you to, overall, run a highly circuitous chain where you DAC the signal ie C the D to an A signal only to need to ADC the A signal ie C the A back into D so you can wirelessly transmit the D signal.
Confused? Yeah that's exactly why I'm asking for details here. Because I'm hella confused why you want to DAC a signal when you want to transmit it as a D so why bother DAC-ing the D into A only to have to ADC the A back to D so it can flow wirelessly because BT isn't pre-Sirius FM radio.
And as I have already pointed out, there are quite a few dacs using a bluetooth chip for receiving that, according to qualcomm, is able to receive and transmit BT audio signals.
Obviously i also need a device with a built in dac at the receiving end, every bluetooth headphone has a dac built in...
Because just because one chip and antennae hooked up to it can work both ways it doesn't mean the rest of the circuit it's on can also work both ways.
You send a signal to DAC it will DAC the signal by going C on the D to make it an A, but BT only works in D. So that DAC unit only uses a BT
receiver to wirelessly receive the D that it can DAC, ie, C the incoming wireless D to become an A.
If you hook up a cable to a DAC unit you send a D through a wire that then DACs the D ie C the D into an A, so now that A has to go into an amplifier circuit, and therefore it being an A can not be transmitted as wireless D unless you ADC it again ie C the A to become a D again.
And because BT transmits in D, then not only can you not transmit an A from a DAC if you put a transmitter on it, the D is received wirelessly which then has to get DAC-ed by the BT headphone's DAC circuit because it received a D that needs to get C'd into an A signal that its amp chip can amplify to move the transducers so you can hear something. At least until Elon Musk's new "wired into brain" headphone system comes, at which point you don't need a DAC, you just get a D wirelessly then it goes straight into your brain, eliminating hte need to DAC the signal ie C the D into an A than can be amplified to move a transducer that moves air that produces sound that vibrates your eardrums.
If you're comparing it to a headset that can go both ways, that's not simply a matter of Ali Express vs NAD prices. It's because it doesn't just have a DAC, it has an ADC for the mic in the same way that a hi-fi DAC+HPamp unit only hasa DAC and headphone amplifier circuit while a pro audio interface has a DAC+HPamp+Mic Preamp+ADC so you can hear what the rest of your band already recorded then you sing or play along to it that the recording engineer working at home can put into the final mix.
