Hi, What are your thoughts on a DAV BG-1u + WARM WA12 (or upcoming TB12) as a preamp combo vs the Focusrite Liquid Channel and ISA One? These will be used mainly to record vocals and acoustic/elec guitar and bass. The advantage of the Focusrite pres is they have built in A/D conversion which may be an advantage. My interface is a Focusrite Saffire Pro 24 DSP. Which preamp combo would you prefer?