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In Reply to: RE: You know, posted by knewton on July 20, 2014 at 07:13:47
Are you sure the Lite 83 is not using a BB DF1704?? If it is, then it is an 8x OVERsampling digital filter and not an upsampling ASRC.
My Monarchy M24 dac is derived from a Lite DAC and it uses the DF1704 fed into a pair of PCM63K DAC chips.
Follow Ups:
would make sense, given the shared provenance. Looking at photos of the 1704 filter on the net, there appear to be a similar number of pins on the chip pictured in the Thresholdlovers review (14 per side?) but aside from that, I can't really tell - and I'm not sure that confirms anything significant.
big j.
"... only a very few individuals understand as yet that personal salvation is a contradiction in terms."
Edits: 07/21/14
No, I'm not sure. I'm only surmising, based upon the scant details provided in the linked product review. The review mentions upsampling to 192kHz, which likely means ASRC is employed. The output of an ASRC chip could still be sent to an digital filter chip for an additional x4 rate increase, however, I saw nothing which indicated such an operation is implemented, but it certainly may be.
_
Ken Newton
But again, it does not offer that much design analysis . It's no longer near the top of the index mentioned, but for myself, I'm not particularly drawn to the other designs that rank above it, save another using a similar chipset. And another press release , but with only a bare mention of the inner digital pathway.
I've written to Lite Audio and they gave only the briefest of responses to my questions - except those about the design. On that the did not reply at all. Disconcerting, but it sounds bl$$dy good, especially with I2S from the matching transport.
Morricab, got any images of the DF1704K filter chip to compare?
big j.
"... only a very few individuals understand as yet that personal salvation is a contradiction in terms."
http://www.mother-of-tone.com/pdf/DF1704.pdf
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