The S-man has had two parcels arrive in the mail today, a Brown Dog adapter and the NOS pot from Lawrence. Now I can use the LT1028s that I bought from DIY kits; so I popped them in the BD and immediately put them in place of the OPA2134 in KHA. I brought them as 'used', though I have no idea how used they actually are. Anyhoo, after 10 mins or so I had to just make sure they worked ok and popped the Senn 555s and the Denon D1000s (KHA has two sockets and the diff cans are nearly the same impedance). Crikey these op-amps sound really reeaally good in this position, Eva Cassidy is simply captivating - you know ... where you lean into the music because it's got your attention, no sibilance, no edge, just smooth, clean and open, tight and warm bass.
Something I've noticed whenever I've used two single op-amps (627s and 1028s) either in the DAC or KHA is the superior focus and imaging and soundstaging compared to using a dual op-amp. VERY nice!
The other package contained the NOS volume pot and I must have been expecting something more, because I was a little disappointed with the pot. I had been imagining something more like an ALPS Blue and this looks like a standard old pot with detents that may actually be no better at all than the pot already in the Zero. Is this what you got, Penchum and PP? It used to be an 8 leg pot that has had the two RHS legs cut off (facing the front of the pot) leaving 6 remaining. Hmmm.