I very much enjoyed listening to the Blues Traveler set recordings last Sunday, and have been meaning to get back here to post some thoughts since. Was listening with my preferred HD650 headphones, but on someone else's computer so my comparisons were made by way of streaming though the archive WinAmp player to gain EQ capability. Haven't listed to the Big Head Todd set yet.
I mostly focused on comparing the Nak and KM140 sources, both streaming simultaneously in separate browser windows. Note for anyone comparing these, those two sources are inverted Left/Right. Not sure which reflects the actual "sidedness" as experienced at the concert, and it doesn't really matter, but my initial "wha?" upon shifting from one to the other was quickly shifted to an "oh, okay" by flipping the headphones around on my head to keep the left side left each time I switched between sources. Funny that every once in a while I'd switch between the two and forget to flip the 'phones, and the "wha?" disorientation would immediately return prior to realizing a second later what had happened.
With that established, I EQ'd each to best effect - a good portion of which is baseline correction for the transfer function of HD650's > my ears. In other words, I start with a similar baseline curve for most any recording. Beyond that, it was interesting get a feel for what further adjustments I felt benefited each and how they differed.. then to play around with how close I could get the two to each other, at least in terms of perceived frequency response. Struggling to recall detailed specifics, but other than what might be expected, I remember EQing in a somewhat different midrange presence bump. Ended up with both very enjoyable and involving. Good general metric of success when it gets me to relax into it and want to keep listening. Nice job!
Interesting that there was a significant difference in the Nak>A10 encore. I recall it taking more EQing to get that somewhat similar the the other two sources, but it not sounding as good. I don't use an A10 so am not intimately familiar with its "sound", but would expect it to be neutral with makes me wonder about the analog-out signal path through the Nak500.
Looking forward to doing some similar listening with the Big Head Todd set at some point.
Overall, my impression of the Blues Traveler set is similar to Chanher's comments on the Todd set. The Nak source is more compressed, "warm", "rounded" and "cassette-like" and had me recalling good cassette recordings from 30+ years ago. The KM140 source cleaner and more detailed, more top and a deeper extended bottom. In addition to the length differences due to the tape flip, the Nak source runs considerably faster. I found myself doing the "quick double pause jab" frequently to keep them in loose alignment.
Those particular sonic differences got me thinking about how both sources feature different positive aspects that are potentially complementary, and how the less dynamic Nak source might serve the same roll as a parallel compressed channel. That sent me down the a just-for-fun path of working a very rough mix of the two by playing both browser windows simultaneously. Sync'd using a quick double-jab to the pause button of the Nak source every, dunno ~10-15 seconds or so. Close enough that after each brief double-jab pause, the Nak source would be a few milliseconds ahead for a few seconds of play before slowly sliding into full sync (interesting to hear the slight delay perceptually morph to a flanger-like phase shift, then that phase shift disappear as the two sources slides into full alignment for a few seconds, and then slides back out of phase again until achieving just enough perceptual delay that another double-jab would repeat the cycle. By adjusting the relative level of each source I got a good feel for the positive combination of the two - bottom extension, clarity, dynamics, transients and a more 3d audience/ambience from the KM140s flushed out with a nice compressed fatness and flavor from the Nak tape source. Obviously this was a quite fast and loose thing, complicated by the fact L/R is swapped between the two sources (which was actually less of an issue than I imagined it might be), yet sufficient to get a good feel for how well the two fit together nicely in a quite complementary way.
Fun stuff. I'd not want to try to actually sync them though!