SilverEars
Headphoneus Supremus
- Joined
- Sep 18, 2013
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ZX1 uses a class D digital amp chip, which takes a digital signal and using PWM amplifies it, the PLL is the clock, the Charge Pump converts the signal into frequency output via voltage oscillator.
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Does anyone have the specs for the ZX-1? What DAC chip(s) is uses and its power output? I couldn't seem to find it.
Sony like Apple doesn't have to use off the shelf parts. They use these:
And yes like Apple most of the space is screen and battery.
It doesn't use a dac chip like most daps. Here is a post about its class D type setup: http://www.head-fi.org/t/680853/sony-nwz-zx1-35th-walkman-anniversary-model/285#post_9842562
Just looked up Class D amp. It takes in analog, modulates it, and stretches the modulated signal and outputs the analog after filtering. I guess it's called Digital amp because the analog gets modulated to PW. It has higher power efficiency that's all. The problem is if there happens to be a timing glitch..
The top left of the picture is the ZX1's custom digital amplifier chip presumably made and designed by Sony, while other daps use an off the shelf dac chip. The significance is that Sony's chip works like no other dac, being a digital amplifier rather than a digital to analogue converter. Those 4 capacitors in the picture work with the digital amplifier in a phase locked loop charge pump configuration, another design unique to the ZX1, not found on other daps. Not saying its a better design, but it certainly is a very modern and interesting design. The design is only in its infancy being the first time something like this has ever been implemented in a dap, I really look forward to Sony innovating further on this design in future daps and lessening its short comings.
So, do any of these have a noticably easier to read in sunlight screen? I use my DAP outside during breaks at work, and some are almost impossible to read in sunlight....
thanks for any suggestions
To me, for SQ purely, Hugo>901>AK240. As a whole portable package, AK240 will be the best, but I find it much too expensive for the SQ. Whereas Hugo is not. All IMO.Looking to buy a new portable source for CIEM,s only. Is it with the trouble of the Hugo as needing a transport . I Have a iPhone 5 64 gig to,use. Now if I buy a ak240 I am done . Is the Hugo that much better with CIEMS. I could see if it would be used with cans as they would be more reviling .
Any ideas ?
Al
Hugo is top of the heap technically but on the surgical side, so if you are hoping for sweetness move along...I myself might give the RWAK240 a try.Thanks for the view it helps. As I would like the ak240 for its simplicity but as SQ is tops I have to do the Hugo .
I have a Hugo to listen to tomorrow in NYC. I am taking my HDP r10 as transport and a comparison for sound I have low and hirez and dsd as well . I will bring the jh13 fp and the Roxanne's so I have both ultra details and ultra dynamics to listen for . So I am ready
Al
To me, for SQ purely, Hugo>901>AK240
Not yet, but still might, depending on the RWAK...to be fully honest I am a bit pissed that I followed people's opinion and tried the 240. It is a very good player, and I am not as disapointed as I was with the 120, but I do not find it to be the DAP that walks on water some people make it to be...people cannot help to judge based on price. Trust your ears people, they are the only ones who must be truthful as they have to live with you afterwards.So I guess your not selling the 901 then? :basshead: