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Posts by alphaman

F2K (v1.19) wasn't CPU overloading any more than 2-3 days max before I upgraded to v1.29. That's not that long and I trust my "audio memory" for what CPU-normal v1.19 and v.1.29 sound like/different. And as I noted ... it was quite a big improvement, so my appraisal confidence is high. I never use Foobar for any DSP -- but I still made sure none was active as I was troubleshooting. Nada.I don't know what caused my 9-year-old Win XP PC to suddenly misbehave with F2K v1.19....
Now that I think about it, most modern DAPs and smartphones and iPads, etc. do not have output protection. A few years ago, home components (CD/DVD players, etc) had output protection transistors (and a lot of DIYers removed them for improved sound). I think output protection is old-school thinking ... back when something blowing was more likely and would cause DC on the output (e.g., tube stuff) Today, QC and component reliability has gotten good enough that we can bypass...
If the output is direct coupled and the headphone or LO output on the T51 is not servo'd or carefully tweaked, you could be passing hazardous DC to your delicate IEMs!! This may damage them. IIRC, the original T51 used no output (DC blocking) caps, but was carefully tweaked so output voltage never went too high. Of course, in the event of a RARE accident, the original (non-modded) T51 could also pass DC. To get both decent sound and protection you really need to go this...
About the comment ... "Such changes should not have audible effects - let alone obvious large ones "... Yes, I thought so too, along these lines ... but that was years ago ... freshly minted from BSEE ... when I was an objectivist spear carrier ... in fact, I used to be much harder-core HA camper than even most narrow-spectrum HAphiles currently are ... but as I got older, the universe gets larger and clearcut mindsets and beliefs get swamped in complexity ;) I have an...
Thx for your reply. No, I don't think it's any of that -- but it may be some coding change "accidentally"/serendipitously leading to better "timing", buffering/caching, etc. And that developer change may have been incorporated into the latest version for some non-SQ issue. I think the HA-card-carrying developers of F2K do not believe one audio player importantly (delectably) sounds better than another. IAC ... I ruled out loudness with SPL meter. CPU use were non-issues...
I realize that H-F is not the "official" Foobar2000 member's forum. The official forum exists at HydrogenAudio.org (HA). Unfortunately, HA warned me that if I posted this topic on their forum, it would in violation of their TOS#8 and would be subject to deletion unless, eg., I could offer some credible "scientific" basis -- eg., ABX -- for my query. I concur that I don't have credible "scientific" data to back up my query. And I do feel scientific data are important. But,...
  On 1/25/12 w357 posted three head-fi.org messages (#1249, #1250 and #1251)... http://www.head-fi.org/t/447479/teclast-t51/1245#post_8090817 with the following images:   1. well-known "Storb modes" based on the AD8397. it will not consider   2. Storb analogue-mode PCB authorship Symmcat     3. [...] previous version of the amplifier, but this time based on opa LT1886-compensated   And then w357 posted this important image...     MONTHS LATER...   On 12/18/12...
I have modded my old T51 a few times and can relate some experience ... Some of Burnwaygta's incorporated mods are good -- like the new dedicated micro headphone amp PCB (but much of that was work was done by other on the player.ru forum long before Burnwaygta incorporated it into "his" mod). I personally use a dedicated (external) headphone amp, which allows MUCH higher audio quality. As far as Burnwaygta's TOTAL mod ... how can one really tell which part of it makes...
The electrical engineers at Teclast (the designers of this device) are aware of the topological (in)abilities of passive components. And they correctly selected decent-quality Chinese-made plastic caps (the stock caps). NP0 ceramics --even by best manuf. -- are not superior. But the bottom line is economics: high-quality NP0 -- as the Murata you've selected -- are as cost-effective as  stock Chinese plastics. Yet the original designers correctly selected plastics. One can...
I'm too lazy to Google these lazy questions about T51 and CK-4   Teclast T51 or Nationite SFlo2: 1. What's the native operating system for T51 (e.g., if Linux, which version)?  [enter answer] 2. What's the native disk file system for T51 (e.g., FAT32, etc.)?  [enter answer]   Colorfly CK4: Same two questions as above. 1. [enter answer] 2. [enter answer]     Thx in advance!!
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