I found just now this old but very interesting post of yours, Rob. Could you please explain why Davina can output an MScaled redbook and MScaler cannot. I didn't even imagine Davina contains a MScaler (but I am sure the MScaler contains a MScaler). Is that because Davina has USB out and MScaler does not? If Davina contains a Mscaler, does that mean that it samples at a smaller frequency (eg redbook) and then mscales it before putting it out? Thanks.