Jump to content

Extreme_Boky

  • Content Count

    31
  • Joined

  • Last visited

  • Country

    Australia

About Extreme_Boky

  • Rank
    Freshman Member

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

  1. Yes, the front panel switch will place the May DAC in standby mode - the back panel mains switch is not really needed. The mains cable can be unplugged, if required.... Auricap XO is my favourite capacitor, at the given cost. It is neutral, not bloomy, not warm, not wobbly... has a firm rendering of bass frequencies and an extended top range. It will provide firmer sound at either end of audio spectrum, compared to those Vishay MKP's. I expect that separation and fine details 'rendering will also improve a fair bit. (This is what Kitsune does...for a pretty penny + the additional s
  2. @Quadman I have been playing with electronics all my life... here's my experience and few suggestions Bypass the 3 switches in the power supply unit: 1. The mains switch, as part of the IEC socket at the back of the unit. 2. The 110/120 <-> 230/240 switches (2 switches) for the transformers (located on the PCB) The wire you use will determine the sound colouring, but in general, the solid core copper / silver (especially ribbons, and especially silver ribbons, annealed) will sound best. The biggest improvement comes from o
  3. The time-out for edit's.... anyway, just to complete my response. However, I do know that I prefer electron transfer in its original form, used either for the benefit of voltage, current gain (or for R-2R conversion using only a resistor), to any form of signal manipulation / processing done by a peace of silicon, no matter the reduction in length of the traces that a conversion chip brings. The main problem is that people think we have a computer at our hands - where we in fact have an unfortunate evil that was imposed onto humanity in form of a digital reproduction -
  4. The AKM4499 is a brilliant conversion chip. I monitored very closely Asahi Kasei development, their energy, dedication and the lengths they were willing to go to to design AND build a power supply, adequate rails' decoupling and PCB layout, to be able to give that chip what it really deserves, to be able to actually measure its great performance capabilities. Impressive converter. You see, I do give Kudos where Kudos are deserved and warranted. Maybe if it's implemented in the same way May implemented their R-2R network boards/modules, all else being statues quo within a DAC, it wo
  5. Agree, it sucks & hurts; a highly undesirable combination.
  6. Well, R-2R DAC converts digital electrical current (current flow through a resistor) into potential difference (across that resistor). This potential differences is also capable of creating a current flow further down the line towards analogue amplification, due to that very same potential difference. Electron flow is redirected, if you wish, from one road into another. No damage done (well, apparat from inaccuracies involved with resistor tolerances...) So, there is no silicon involved during this fundamental conversion process, from current level -> into analogue representatio
  7. Oooh, I forgot another important factor: the volume pot should be preceded by a gain (gain of 1) stage of some sort (valve/transistor) to ensure high input impedance for the source ....and.... be followed by a buffer stage (another gain stage), that will ensure a very low output impedance for the amp. Of course, the above is a good practice; however, it can be omitted... but then you'll have a varying output impedance, as seen by the amplifier (both, undesirable scenario and very high output impedance -> at most of the volume settings) ...and... a
  8. Maybe the interconnects/RCA/XLR sockets & plugs and the inherent contact resistance introduced by all of them/those + the internal hook-up wiring to that volume pot and back from that volume pot... => has something to do with the overall impressions you experienced?
  9. Well, to start: - you would not have a detrimental effect of contact resistance X 2 (RCA's / XLR's) on sound quality - same applies to one interconnect cable (which you would not have to use).... each cable will have specific capacitance, inductance, resistance and the cable material (copper, silver) would also provide their own coloration - one less HiFi unit to pollute the power outlet Now, here comes the pre-amp in itself: - switches / potentiometers.... still only contacts / wipers / relays, all causing sound degradation - resistors, capacitors, PCB tr
  10. ...just remembered that HQ Player caters for an on-the-fly phase inversion.... try that as well.
  11. At those transmission frequencies, between the PC USB port and the DAC USB port, the amount of braid AND the way that braid is terminated to either (to both) USB shell metal cases, is of paramount importance. Next important thing is the impedance of the USB transmission line; not many manufacturers get it right - some (very boutique ones) do not get it at all - period. It should be 90 ohms. But, many expensive cables get this one completely wrong, and then we have reflections and dips that are clearly visible - reflections are particularly nasty. Then, there is a +5 V
  12. I did notice your previous post where you stated that the sound changed for worse.... This is what I experienced: Brand new May, right out of the box - very nice even with a “raw” (non-upsampled) 44.1KHz material. The whole spectrum was there (highs as well !!). Nice and spacious sound, very pleasant. There was no "dullness" that is sometimes associated with NOS DAC's. The rising edge attack was also there. I was impressed. It was also very natural; especially the string instruments. Piano sounded better in DSD…. the piano with PCM in NOS had that “clingy” harmonics tha
  13. The benefit of LNS15 dither at 1.536MHz, using poly-sinc-lp filter and 20 bits of bit-depth are undeniable. This is my favourite combination. Nothing comes close to it... and I can no longer listen to anything else... It is like hearing all the details crystal clear, with great definition at all frequencies, firmly defined bass, shimmering highs, great width and height layered right in front of you. Truly enjoyable. But the best thing is in fact how the whole presentation blends together in the "right" way, as one would expect by drawing a comparison with the best analo
  14. Thank you. Even though I was aware of the above, you worded it so nicely that it truly helps understand what an a-sync data transfer between PC and USB interface card means.
  15. Asynchronous USB looks to be the perfect solution; you configure your PC for bit-perfect output and the DAC takes care of the timing totally independent of the timing of the PC. But there are posts on the Internet claiming that even in the case of an async USB DAC what is happening upstream is still affecting sound quality. Sending a signal to a DAC is done using a 100% analogue waveform/carier. The digital packets are superimposed on this, still analogue, waveform. But can software affect this wave? Is it done in bursts or is it throttled? The burst might induce periodic jitter, t
×
×
  • Create New...