Thanks for the concise impressions.
I have an SR-007 Mk 2 and i'm afraid the Octave 2 may not be sufficient. In any case, i have Birgir's "cheap" version of the KGSSHv and it drives the headphones marvellously. I'm just curious about his other amps and what they bring to the table sonically. As is the case with your set-up, mine is nowhere TOTL too but gives hours of listening pleasure. Happy to stop here but as in any hobby....that's not gonna happen
I was contemplating the L300 LE but having once owned the regular L300, i find it wanting in terms of bass response and the thin ear pads was not too comfy. Still it is a nice headphone for the price.