Dgarretson, JRDG twin chassis Criterion is based on BB OPA1632 modules. Jeff Rowland designed its battery PS around NiMH D cells. I will finally listen to it in room 505 on Friday at RMAF. . . still have no idea if it sounds good, bad, or indifferent. I am also curious to find out how it compares to the minimalistic SS PS Capri, which is also based on BB OPA-1632. I will definitely also visit RedWine and Dod suites.
Battery Powered Preamps
I notice that the more expensive preamps get within a line, or in general, the more complexity and expense seems ot be applied to the power supply and regualtion; sometimes with the addition of a second box for the power supply.
I conclude power supply is important. If this is so, why not go the simpler route of battery power for pure DC? My Dodd Battery Pre works very well indeed (for context -I've owned CAT, Lamm, ARC, Joule, Placette Active, Atma-sphere (still own), Bent TAP). Am I missing something, or doesn't battery power just make the most sense for a preamp - off the grid and all that? Seem much simpler than most highend approaches, and much less expensive to implement.
I conclude power supply is important. If this is so, why not go the simpler route of battery power for pure DC? My Dodd Battery Pre works very well indeed (for context -I've owned CAT, Lamm, ARC, Joule, Placette Active, Atma-sphere (still own), Bent TAP). Am I missing something, or doesn't battery power just make the most sense for a preamp - off the grid and all that? Seem much simpler than most highend approaches, and much less expensive to implement.