https://www.audiosciencereview.com/forum/index.php?goto/post&id=818513
For the record let me say this again, I firmly believe the likes of Denon AVR-X3700H, Marantz SR60156 and their higher models will
not use the PCM5102a (that is a stereo/2 channel DAC IC that has only 10 pins) to replace the AK4458. If the PCM5102 is used at all, it would be for Z2/3 and it would be a good thing because it has slightly better specs than the PCM5100 found in current D+M models including the AVR-X8500H, for the secondary zones.
Even if pevely got his info from a Denon product manager, it can still be false information. A much more reliable source would be Denon/Marantz's engineering, official website etc... The official website shows the new DAC board (posted again below, with link). That product manage who emailed
@pevely is not doing D+M fans as well as D+M itself any favor for sure. Imagine the low SINAD (lucky to get near 90 would be my guess) we can expect if it really is the PCM5102A!!
If in the very unlikely event that they actually use the PCM5102 for the main zones, I would then stay away from D+M, not that I think I can hear a difference but it would be a matter of principle, why go backward?
I posted the following before but I guess it got loss by now so here it is again. It is from the Denon Japan website. One can magnify the photo of the new DAC board and can see two DAC ICs that have the same pin configuration as the 40 pin AK4458. From the photo, there is no evidence of the 10 pin 2 channel PCM5102 being use, if it is, there will be at least 8 of them in order to cover the 13.2 channel plus the secondary zones.
So I am still hopeful the replacement chip will be something much better (in terms of specs) than the PCM5102A that has THD of only -93 dB.
AVC-X6700H | 11.2chプレミアムAVサラウンドアンプ | Denon公式
32-bit compatible high-quality sound D / A converter
The 32-bit compatible high-quality sound D / A converter selected by the careful listening test by the sound manager is adopted. The D / A conversion circuit has eliminated mutual interference by mounting it on a dedicated board independent of a video circuit and a network circuit. In addition, the post filter is operated in class A, and the performance of the D / A converter is maximized by using sound quality countermeasure parts such as thin film polymer multilayer capacitors and thin film resistors.
The D / A converter IC has been changed since the spring of 2021. Since the DAC is a component that has a particularly large effect on the sound quality of the product, when changing it, the circuit is redesigned and the sound tuning is performed in the same process as when developing the new product.
We continue to deliver products of the same quality as before, while maintaining the same sound quality, performance, and functions as before.
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