Hi, neither DAC does DSD or double DSD at this point. An upgrade for the Elyse DAC will be available in the future. To be honest, the technology 'lapped' me as the design for the Elyse DAC has taken so long. I am still waiting to see if the technology will stay or not...
The ELYSE DAC does use the same DAC chip, but that is where the similarity ends.
The DAC upgrade for the LS 100 IS very good!
The Elyse DAC is our Reference Digital offering. It is fully transformer coupled in and out with Lundahl transformers. It is 6922 tube based and has no coupling capacitors in the signal path. It utilizes a more sophisticated power supply, Digital/USB input design and analog stage than the LS 100 DAC upgrade. It offers RCA, BNC, XLR (AES/EBU) and USB (24/192) inputs. It is also a different price.
The LS 100 DAC upgrade = $1650.
The ELYSE DAC is $6900.
Thanks,
Dan