Showing 9 responses by georgehifi
This could be nice, all starting to get back on the R2R Ladder Multibit wagon. Maybe it does Hi-Rez as well. http://www.thraxaudio.com/Maximinus.php Cheers George |
I believe the Multibit dac upgrade $250 for the Bitfrost is a cheaper version of the Yaggdrasil's Multibit dac $2990, both made by Analogue Devices. And the AKM4490 is a Delta Sigma dac the cheapest $100 upgrade. From what it had when first released 2013 which had the AKM4399 Delta Sigma. Cheers George |
"cymbal sound like crinkling paper" Yes his description of the highs is a bit out there, but I think know were he's coming from. I too on Redbook find DS has a lack of "jump factor" and midrange body to the sound and the bass of Multibit always impresses me over DS, and cymbals on DS either on rock or orchestral don't hit hard and clean, they are either too laid back and sweet or in your face and harsh depending on the filtering used. Delta Sigma has massive noise that need to be got rid of a bit like Class D amps with it's switching noise. (Teac gives may different filter combos for the user to play with their DS dacs) It all comes down to the filter/s that have to get rid of it. I read a while back one of the digital gurus on DIYHI.org where all the big boys play like Thorsten Loesch (AMR), Charles Hansen (Ayre), Pedja Rojic (Audial) and a bunch of others used this analogy. (hope I got it right from memory) In Class D the switching noise can be filtered two ways either very high and out of the audio band, which leaves some noise in the audio band, or low which has phase effects and HF roll-off's with in the audio band, or half way a bit of both. One sound hard "like crinkled paper" the other sound soft (opaque) or a combo of both. Cheers George |
Looks like Bruno Putzey of Hypex Class D amp fame has gone to designing a discrete Multibit dac (called the Mola Mola) that uses 32 x 1 Bit dacs per channel, that is capable of doing dsd as well as Redbook. Production board http://i.ytimg.com/vi/LNvVXCqEtEU/hqdefault.jpg I think this was the prototype http://puremusicgroup.com/cart/images/uploads/Moladac_proto-web.jpg Cheers George |
Delta Sigma type dacs (redbook dsd, hirez, sacd ect) vs R2R Ladder Multibit dacs (mostly redbook only, there are a couple of very expensive exceptions). This guy hits the nail on the head for me, there are many others also that delve into it far to complex for these pages. If you can't understand it don't worry go down to the look and it may start to make some sense. http://www.mother-of-tone.com/conversion.htm Cheers George |
No, no back to the future for me I briefly stepped my toes into Delta Sigma type convertors (eg: 1bit,bitstream,single bit, Sabre ect) they're all Delta Sigma based. But they couldn't come close to properly implemented R2R Multibit for Redbook replay sound quality. And I have no interest in DSD, Hi-rez or SACD it does nothing for me, maybe because it has to go through a Delta Sigma type dac, I don't know, it just has no jump factor or midrange warmth, it sweet enough but just a bit of a yawn. They "the real hiend guys" not just the ones that jumped on the DSD Hi Rez bandwagon that need to use Delta Sigma type dacs. Will all be going back to R2R Ladder Multibit one day as it is "the bit perfect process", and sounds better on Redbook than Delta Sigma. These are just some of the very best around at the moment that have shunned Delta Sigma and gone back and used R2R Multibit, either discrete or chip. And the list grows all the time. Trinity Dac Ypsilon Cdt-100 Phasure MSB Platinum Total Dac Audial (Peja Rodgic) AMR top dac and cdp (Thorsten Loschec) Emm labs Exasound Reimyo CH precision Cheers George |