What is the connection between the absence of a recovery (reconstruction) filter and the NOS?
NOS/OS - reffer to the Difital Filter, reconstruction filter - is alwayas analogue.
With NOS with this filter, everything becomes more complicated than with OS, especially in its absence.
NOS/OS - reffer to the Difital Filter, reconstruction filter - is alwayas analogue.
With NOS with this filter, everything becomes more complicated than with OS, especially in its absence.
I also have 2 older TDA1541 NOS dacs. AYA and my own design with a tube buffer. Both are nowadays used only rarely. Some prefer NOS, some don't. No need for the typical audiophile commentary ("your system/PSU/parts is not good enough").
As for me, AKM and Rohn are much better. (But ESS wins in measurements).
P.S. I'm also have AD1862 and TDA1541A. With NOS it possible to use with tube SE amplifier only, and not with all music.
I also prefer AKM (AK449x). ESS wins in measurements provided the measurement is strictly at one frequency/level where the THD compensation has been tuned. ESS does not like sweeps 😉
Over generalisation, I heard very serious dac constructor thinking the opposit saying akmwas not natural sounding so much when with embeded filtering. Rogic for instance.
As for the tube there is no point imo, that's myth.
Many delta-sigma DACs are behind me. I listened to them by plugging it in and letting it play for a month or so and then switched. The music played in the background and I "forgot" while working on the PC. After a few hours of listening I experienced discomford, disturbance and I had to turn off the music. Somehow I came across the Pavouk website and it was first time I tried his AD1865. I honestly did not believe that the old DAC with worse parameters could play better than the new technology, curiosity made me give it a try. The AD1865 played quite nicely and I really liked the sound. I noticed that it doesn't disturb me while working. I didn't need to turn off the music and this was something new to me. I thought that was specific to AD1865. Then I tried PCM1704, AD1862, ... with the same experience. I switched back to different delta-sigma many times and I forgot about this switch, but this disturbance remains. I tried the R-2R with digital filters and this disturbance was back. The only explanation for me is the digital filter. Maybe it's something else, but I haven't found another explanation yet 🤔 Many people who switched to the R-2R without a digital filter felt a kind of relief. I'm glad I'm not alone, otherwise I would think I have a mental disorder 🤣
But it could, that's a reality I often seen, so rigth worth to be said here ! But I can agree tastes can be involved, and very few nowadays still go to not not amped live venues in town.
No, not a myth. Tube amplifiers, especially those without the NFB, are much more tolerant of HF noise than solid-state amplifiers with NFB, where high-frequency noise produces intermodes in the audible range. In addition, interstage and output transformers are good LPF.
It is just as possible that all your tweaks with PSU, parts or whatever just adds colourations. Many prefer distortions even though they vehemently deny it.
when the bass is get rigth I am not sure for illustration that is just coloration. Again my ref is not amped acoustic live music, so expectations are high ! Although I like also more easy Rock n'roll too and here I am more easy and forgiven ! 😉
I know many people who prefer high jitter oscillators in DACs, higher distortion amps, etc.
I tried AK4495 with all filters and the sound was like from a sewer. Did you try the AK449x without digital filter? I did not tried it 🙂
btw are there modern dacs device with a NOS button than switch off the internal filter or not, is it romed on writed in hard inside the dac chip from ESS and AKM (but the last you mention) ?
One and only warning. If you do not stick to the topic at hand, you will be riding the pine for a long time. diyAudio is no place to discuss these issues. Offending posts removed.
A friend of mine listens to vinyl and CD player (PCM63) all the time through a 2.2W 6V6 SE amplifier with the output transformer size like 3-4 matchbox, through wideband speakers in the open baffle.
And the music he listens to sounds great!
And the music he listens to sounds great!
Thank you.
One and only warning. If you do not stick to the topic at hand, you will be riding the pine for a long time. diyAudio is no place to discuss these issues. Offending posts removed.
In AK449x filter is selected by setting registers so for diyers this is easy. IIRC RME ADI-2 dacs have NOS mode.
I don't know about all industrial products, but in my own DACs I can do everything for experiments. AKM and ESS can work with an external filter bypassing the internal one, as far as I remember, Romm cannot.
Maybe your AK4495 came from a sewer. As with AD1862 or any other dac chip it is all about the implementation. Just mentioning the dac chip does not tell anything.
I have tried AK4490/3 without digital filter. Sounds quite ok.