Denon X3300w (and others) quality ADC and DAC:
Hi, I took a look at which ADC and DAC chips my x3300w is equipped with. They should be pcm1690 for the DAC and pcm9211 for the ADC.
PCM1690:
24-Bit Delta-Sigma
8-Channel DAC
High Performance: Differential, fS = 48 kHz
THD+N: –94 dB
SNR: 113 dB
Dynamic Range: 113 dB
Sampling Rate: 8 kHz to 192 kHz
.........after all it's not that bad, there's certainly better.
The problem is instead the ADC, which, in my opinion, is painful! It seems really poor to me. It's a chip that does other things too!
PCM9211:
The PCM9211 is a complete analog and digital frontend for today's multimedia players, sound bars, and recorders. The PCM9211 integrates a stereo ADC, S/PDIF transceiver with up to 12 multiplexed inputs, and 3x PCM inputs to allow other audio receivers to be multiplexed, along with the analog and S/PDIF signals to a digital signal processor (DSP)
24-bit, 96-kHz capable
Dynamic range: 101 dB (fS = 96 kHz)
...I'm not very expert but I understand that the ADC is really poor and I also think that the analog signals that enter the Denon (turntable, etc.) are much penalized compared to the digital ones, so they have to pass through that shit of ADC.
What do you think?
I therefore thought of digitizing my analogue sources through an extremely high quality converter, a studio AD/DA converter, Apogee Rosetta 200 with these specifications relating to ADC:
- 2 channels of very high quality 24-bit AD/DA conversion;
Sample rates available up to 192k.
- "Intelliclock" dual-stage jitter reduction technology
- "Soft Limit" to operate with the maximum digital input level without distortion
- Available sample rates: 44.1/48/88.2/96k/176.4/192k (+/-10%)
- Frequency response at 44.1k: 10 - 20,000 Hz (+/- 0.2 dB)
- Range dinamico: 114 dB pesato A (AD + DA)
- THD+N: -105 dB (AD), -103 dB (DA)
https://www.ti.com/lit/ds/symlink/pcm9211.pdf...
Of course I always use Audyssey.
In your opinion, when I listen to analogue sources, I will have a noticeable improvement, right? Or am I thinking wrong?
Thanks for any opinion.
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