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I suppose it's due to the used Bluetooth codec. A brick wall like this is typical for AAC (at 17kHz to be precise).

Audible transparency may be an argument for a device used only for recording and listening, but the analog output of this must also be seen as a signal generator and reference if the device is used for measuring. And in a loopback measurement the very good ADC is limited by the output of the...

Such a pity Topping did not build this with a DAC SINAD like we're used to from them. With a DAC like D10s and the given headphone amp and ADC this would be a noBrainer. Even if more expensive.

I maybe found a pretty interesting device comparable to the BC3 (or even Xduoo XQ50 Pro 2) - the BerryBak BEA1. https://store.sure-electronics.com/product/796 Newer top-of-the-line Bluetooth chipset (also capable of AptX Adaptive and AptX Lossless), USB input, coaxial SPDIF output. Only thing...

I really hope there are no issues as with it's predecessor. But I think Topping has learnt from it...

I got my Noire with the Standard unbalanced cable for home use and am using it with a D10b DAC and a SMSL SH-9. Power is absolutely sufficient. For mobile use I added a balanced cable from https://koalaaudiocables.com/ which is pretty decent at a reasonable price. This is used with a Hidizs S9...

What a mess. Take all the time you need. Hope the swarm intelligence of internet forums proves itself once more to be helpful - there's always someone with knowhow or experience.

Had several transactions with Shenzhenaudio. No complains at all.

It's just a little more challengeing. At many modern cars it's possible to grab the audio signal in digital domain from the MOST bus. This is a proper solution at least for DAB radio, CD or playing files from a hard disk. A less optimal solution is grabbing the high level signal, feeding it...

Glad to see one of the best recent car audio amplifiers tested, proving that there is car audio beyond power levels and boomy subwoofers. If a PDX F6 cannot be found, an Eton Mini 150.4 is a proper alternative still available. I don't know how common Eton is in north America, but this would...

I owned the dusks and was deeply in love with its sound quality, but had to sell them for comfort reasons - the nozzle is way too big (6,5mm) for my ear canal. So if you have rather small ear canals better don't buy any of them. Because of identical drivers the technicalities of them should be...

There MUST be someone in north America owning an Alpine PDX F6 to send it to Amir?! Let alone an Eton Core A2...

No, sorry. I just had a look in the manual and found out that the DSP uses a SRC4382. The TI datasheet lists jitter attenuation under the features. For judging the DSP/DAC part only it would be necessary to grab the signal between DSP and amp - no idea if someone has done this yet.

As far as I found out (at least in my case with a hypex fusion FA123) there seems to be some jitter attenuation in the digital receiver/ sample rate converter used for coax/toslink inputs.

Would this lead to audible degradations?

These results are pretty calming at least for jitter reduction in DACs. Are they also relevant for a case where the coax out is used to feed a DSP? Is DSP processing influenced by these jitter values? Or does a DSP do a jitter reduction before processing even if staying in digital domain? Or is...

Strong recommendation for Dekoni Bulletz. I had the Moondrop Dusk but sold them because of the much too big nozzle for my ears, no matter what tips (Spinfit, Comply 500). Changed to some IEMs with smaller nozzle and Dekoni Bulletz Mercury. Much better comfort.

I think Mercedes Benz has a Burmester branding of its Sound System. I once saw a picture of the speaker hiding behind the speaker cover... I think the cover was a lot more expensive than the speaker itself. :facepalm: The only OEM sound system I heard of to be of good quality is that of Volvo...

Before getting (back) into home hifi I spent about the last ten years with car hifi (sound quality only). Of course there are the "x000 watts" (peak power) amps with fancy blingbling cooling fins and some electronics inside which seem misplaced somehow ... Good example...

Any news concerning a review of the Noire? I'm pretty happy with mine, but a measurement how the new Driver of Aeon2/Noire does compared to its predecessor in the RT would be nice.