Thanks Oz , I have begun reading through the Twisted pair manuals and yes it is all a bit mind boggling. I am hoping that if I decide to go down that route I can ellecit some help from the designer of my pre ie Statman
Haha - TP manual - try reading the Sabre data sheet!
This chip requires micro controller to 'boot it up' and set all the values.
TP have been frigging around with Sabre for years, selling I don't know how many kits. The first were average - I've got one.
The best way to describe the chip is it's like a F1 race car. Just about every thing will head it to 'analytical' and 'accurate' territory.
I have alot of respect for Mick as a builder of tube based electronics. But some of the comments he has posted on SNA in regards to digital leave me wondering if this is an area he is still coming to grips with?
Mick works with an American based EE, and has built / listened to many DACs, so I would give him some benefit of doubt.
Ask him how he goes about programming the chip. If you wanted to make a simple change, such as altering the delta sigma bit depth (which i read is configurable), how do you actually do it? ie: how do you hook it up, what programming language do you need to learn, etc.
Bit depth is one thing, DPLL settings, configurable dig filters etc are another. All doable.
The other issue is that these modern DACs are balanced OP. I believe a balanced tube stage is best way to go.