Let's start a thread on Non-OS dacs, your impressions vis-a-vis DACs that do upsampling for example, 24bit/192khz DACs. I'm already using a Non-OS dac before monica2 came, however, as previously mentioned elsewhere, Monica2 only outputs .7v as compared to the regular 2v. I've listened to units assembled for vince and louie. For the 1st hour of listening, immediately you'll notice that the DAC is dead quiet, very very quiet as compared to my other DAC. Another thing I noticed, applicable to Non-OS Dacs in general, there is less digital glare, notes are more full bodied, di kasing lipis tumunog. However, with respect to Monica2, maybe because of the low voltage output, voices, intruments are a bit mahiyain and not as upfront as my other non-OS dac. Problem is, its not a fair comparision since may gainstage yung naunang DAC ko. I need to find a way to remove the gainstage to compare the 2 DACs. Monica uses tda1545a while my other dac used tda1543. Let me try and assemble my charlize and monica as one set since they are both optimized to work together, let it burn-in, then do a better review or give my impression on the kits. Thanks