Regarding Dave and transparency, if one adds a good amp to the Dave how much transparency does it lose. Does a Dave with external amp still sound more transparent than a TT2 connected directly?
I tired this for a while, before my DAVE went in PX.....short answer is not much, not really, and yes, it sounded better for me. I used both an HPA4 and a Nimbus US5 with it, connected with chord Signature XLR. The HPA was a 'pass through' experience (unsurprising, given the HPA's design) - if there was any loss of micro-detail, I couldnt hear it. What it did do, however, was light up the headphones (LCD3, Utopia, Empyrean) for my preferences - more dynamics, wider staging - nicer to listen to - perhaps not 'better' than the DAVE HP output, but more engaging to listen to. The US 5 was a massive step up in SQ - better timbre, more dynamics, better imaging/staging, especially with the Focals. then again, you'd expect that from a £5000 amp.
The Headphone output on the DAVE is very good - clean, clear, detailed and well-imaged. But, if it doesnt suit your headphones, or you prefer balanced, it;s worth trying other amps - for me, if there was anything being lost, it was more than made up for with the the other gains.
I did find that the setup scaled well with good interconnects - I tried many different cables from TQ, AQ, Nordost and Chord co before settling on the Signatures. I tried the Chord Music XLR, and it was astonishing, but as it cost more than the HPA, that was never going to happen
In both cases, (HPA and NImbus) the Chord wires sounded better (to me) than the others. TQ was dissapointing. with AQ and Nordost, I was looking at 2x the ££ to get the same effect as cheaper Chord. Eventually settled on the Signature as a good balance between SQ and ££.
I've demoed the TT2 in the past - it;s a fine unit. But for me, DAVE + Amp delivered much broader muscial enjoyment, albeit at some cost......