SMSL SU-1 design idea

That is I'm asking about, 300mA from TPS are enough for any audio stream for core ?

Many PCBs have been manufactured using this TPS.
Up to PCM384 and DSD256 in stereo, also 8-10Ch PCM192 and 6Ch DSD128.

What about no interface?
It is possible even no electricity:
VictorVPhonograph.jpg


Or better:

polyphone.jpg



Alex.
 
Radical but maybe a tad too radical. Needing external stuff while it can be internal is also a bit too radical. As usual there is a solution in the middle.

Return to simplicity. Stereo (definitely no multichannel garbage), no fuss, no display, no USB, no features, no DSP, just good sound without needing to think/configure, no worrying about intersample overshoot, reclocking, XMOS quirks or whatnot. I will manage, for sure.

The main thing to be busy with should be which content to play. Actually using stuff where it was designed for.
 
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Without any external interface or external box/PCB with external power adapter/SMPS.

At a point in time we got used to connecting stuff externally to sources and computers but why still do so when stand alone audio players exist that also function as digital audio hubs?

If I had told you in the past (after the turntable period) that your cassetteplayer needed to be connected to an external magnetic head preamp and that one to the power amplifier you would laugh. Same for your FM tuner with an external demodulator. Together with their external wall warts that would make 8 devices 😉 That is why line level outputs and internal PSUs became standard for sources. My audio player has analog line outputs, why do I have to have a second set of those?
 
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I see this is all too revolutionary 😉

Although it at first might feel like walking naked just get used to having no superfluous external stuff.

Now back to working on my washing machine. It is being upgraded with a better external motor with its own external PSU.
 
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does it mean that it can't play 44.1 signal natively

Try to play 44.1 file and ckeck what MCLK frequency is going to DAC.

XMOS can make any mclk from its own crystal of 24Mhz ?
Sometimes yes (using PLL), it can, but it is even worse.
But check that it is real single 24.576 and not dual frequency or programmed oscillator.

Usually XMOS have it's own 13 or 24 or 48MHz clock for CPU and USB operation and audio MCLK from 2 oscillators - 22.579/24.576MHz, switched by the special signal from CPU.
I use or two separate NDK oscillators, or one dual Si572.

Alex.
 
Try to play 44.1 file and ckeck what MCLK frequency is going to DAC.
MCLK changes well to 22.579, interesting how... There are three crystals on board. 24Mhz near XMOS, and also 2 another with marking at one - 24.576 without any additional letters or numbers (so I think it is not dual) and another - 27.00 (may be for CPLD or I don't know what is it with erased marking)
 
Those are good but by other often unbranded ones it can be hit or miss. Same with Toslink transmitters and Toslink cables.

In case of doubt just replace for Everlight or similar ones that do handle 192 kHz.
 
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Radical but maybe a tad too radical. Needing external stuff while it can be internal is also a bit too radical. As usual there is a solution in the middle.

Return to simplicity. Stereo (definitely no multichannel garbage), no fuss, no display, no USB, no features, no DSP, just good sound without needing to think/configure, no worrying about intersample overshoot, reclocking, XMOS quirks or whatnot. I will manage, for sure.

The main thing to be busy with should be which content to play. Actually using stuff where it was designed for.
Very interesting thread , I try to learn a lot .

Some questions : does the sound change in a good way with the output transformers ?
I ask because I have had a Linn klimax for testing against a Wiim pro with linear power supply . The klimax has the output transformers coupled also at the single end rca output , and the sound from this streamer was very good .