Yes, the SPS DAC3 is undoubtedly coloured; whether that is down to the single TDA1543 or the DAC implementation or, more likely, both, I am unclear on as this is my only experience with this chip. There was some good fun way back in this thread discussing objectivity vs. subjectivity, or science vs. magic as I put it. I don't expect this DAC will measure well, far from it... and yet, it has its appeal and brings something special IMO. Richard agrees, certainly. Malefoda (who is from France), over on diyAudio, had this to say when comparing it to his own (now mine) heavily-modified 8x (now 4x) TDA1387 DAC. Bear in mind this is based only on his assessment of the specs as published on the SPS website; he hasn't heard the DAC: "About the DAC3, I must say I've looked for more and found the eBay auctions, I guess one can get one cheap if auctions are very low! BTW, his desriptions shows mistakes and "sell myst", maybe to sell more but here are some facts: - the TDA1543 is not the last Philips Multibit, the TDA1387 is the last, up to 24bit/384kHz, even if useless that tells about internals manufacturing level, when the older TDA1543 is 16/192, - these are multibit but not R2R! Few ICs are true R2R, like the BB PCM1704 which cost and arm. These Philips are segmented current sources, including patents and such, no R2R at all. But multibit yes, they share a lot sound-wise. -the jitter-killer is sales pitch for me, the SPDIF DIR9001 does correct the jitter in some amount and is one of the best in this area even if not being an ASRC (which draw current and won't be great for batteries), your DAC is with CS8416 which does nothing in this area, so I guess that's what he calls some "reclocking jitter killer", and the USB card may be a classic daughter one which uses at least one oscillator to reclock, maybe 2 (your DAC does reclock USB like the Allo DigiOne with 44.1 and 48 base freq). So yes, it does lower some heavy jitter. And keeps some, hence soft sound and loss of some HF details. - he does not correct the NOS, which is a problem always sold as a "feature": it's not accurate and roll off the highs, non-compensated raw NOS does that, and instead of correcting it sellers pretend it's the greatness of the NOS where it damage the original record... I understand some like it, it's a equalizer with less highs, not a good DAC... yours correct the problem, and show the real raw highs. Yes, that's not as fine that good DS, no wonder why the go one keep that "bug"... - his output caps are too low, people use the smaller cap possible for the right frequency cut, to much low freq = unhappy amp ! And his caps are electrolytic... his output caps are cheap lytics, not the best, worst, passive I/V is not right, cheap yes but not right! Some low impedance next stage won't cope with that (the DAC won't cope, the preamp does not mind). I've had a passive I/V on another TDA1387 (https://www.ebay.fr/itm/L1387DAC-4X-Quad-TDA1387-fever-USB-decoder-beyond-the-TDA1543/272418310441) and no way to get it work on my 5k preamp (I admit this is very low). And no need for power supply design, he solved the problem with batteries. Clean power! Mine relies on mains quality, which nowadays is very polluted! Once I had a loud 12kHz pitch coming each time someone took the elevator, no way to filter it out... luckily they fixed the elevator (faulty power card)! With shunt supply no way for batteries, but I wanted life and slam and current is needed! But again, maybe his very simple design (and risky/poor choices (passive I/V), output caps, my opinion no offence to him) does music well in most case (again, low Z preamp no way!), my choices are opposites, technically done first and it were done for my personal use, not for sell and profit. I never wanted to "smooth" the music but to hear it in its truth, even if then bad records sound terrible =) You can oversample on the RPi, that may change the SQ in some ways... on highs I guess. You'll tell, maybe you'll hate it and then me... but I guaranty it's more properly engineered that the simple TDA1543, even if he managed to get less jitter on jittery sources and noise-free supply =) Voilà !"