Hi audiobb,
You are right - if you have a Purcell and a 1394-equipped Delius or Elgar Plus, you can feed in native CD sample rate and choose which upsampled rate you want to listen to, all the way up to the DSD rate. So if you want to make the effort, you can decide "I like CD A best upsampled at 96kHZ, but prefer CD B at 192 and CD C, D, E and F at DSD".
The Purcell can also take a range of different rates as input (see the website for the exact values).
There's a good review in the on-line Stereophile archives (about 2003 I think) that goes through the possibilities.
You haven't said what you are considering as transport, so I should mention that dCS Verdi is a transport only and requires a Purcell for upsampling, whereas Verdi LaScala and its replacement Verdi Encore have DSD upsampling built-in.
That means you don't need a Purcell, but then your choices are limited to CD upsampled to DSD through the Firewire or CD at its native rate through another digital input.
You can still use a Purcell with the LaScala and Encore, to get the wider range of upsampling choices.
It gets a bit complicated...
You are right - if you have a Purcell and a 1394-equipped Delius or Elgar Plus, you can feed in native CD sample rate and choose which upsampled rate you want to listen to, all the way up to the DSD rate. So if you want to make the effort, you can decide "I like CD A best upsampled at 96kHZ, but prefer CD B at 192 and CD C, D, E and F at DSD".
The Purcell can also take a range of different rates as input (see the website for the exact values).
There's a good review in the on-line Stereophile archives (about 2003 I think) that goes through the possibilities.
You haven't said what you are considering as transport, so I should mention that dCS Verdi is a transport only and requires a Purcell for upsampling, whereas Verdi LaScala and its replacement Verdi Encore have DSD upsampling built-in.
That means you don't need a Purcell, but then your choices are limited to CD upsampled to DSD through the Firewire or CD at its native rate through another digital input.
You can still use a Purcell with the LaScala and Encore, to get the wider range of upsampling choices.
It gets a bit complicated...