Hmm, I aim the below to Skeptic mainly if he reads this. I look back to myself twenty or thirty years ago and see so much 'subjective audiophile' in me from those times. It was only fairly recently after repeated goading from pro colleagues and friends that I tried blind comparisons and opened my mind up a bit more as my eyes were shut out of it...
I took the trouble to read Jason's blog posts some months back and thoroughly enjoyed the tales of the start-up, premises extensions, moving and taking new trusted people on - I've seen some of the trials and tribulations of small audio companies for myself, most notably a sadly deceased loudspeaker firm with some genuine ideas. It ain't easy I can tell you - and this from someone who would have failed himself had I used inheritance money to start something as was proposed twenty odd years back...
I got from Jason that he likes a challenge and he indicated in his writings that a simple 'op-amp solution' was too damned easy for him. This I gathered was why he went out for a discrete circuit output for example and, rather like Quad's original owner (the often revered Peter Walker), his designs were deemed 'good enough for purpose' and indeed they were as I don't think any/many performed seriously below par. (I have tales of the much maligned Quad 33 preamp, which band limits the way it does quite deliberately so it won't stress the partnering poweramp into going ape into their electrostatic '57' speakers)
It would appear that competition from the likes of Topping and reviews done here may well have touched a nerve and it may also have been the case that purchasing the best test gear they could a very few years back, opened many doors for them, or possibly 'cleaned the window' on previous ideas (no idea myself, but I like to think that). Equipment began to be introduced that measured well/properly with absolutely no sonic tradeoff. Jason may well have thought he was selling out by going all 'Me Too' with conventional output circuits, but hopefully they've sold more as a result and made more people sit up and take notice. For those who want a skilfully 'coloured serving plate' (I can't say 'dirty' in this context, but maybe a coloured or patterned plate sets the sonic 'food' on offer better for some), they have well established models that must still sell well enough to remain on the product lists. As repeated in earlier posts, they let the market decide what to make and for a smaller company, I'd suggest that's a good business decision - if the market turned, the alternative designs are always there to swap to - Saga S and Freya S for example over the valved ones - if needs be.
The only thing that I don't think any of us can get past with some subjectivist types is the total reliance on their hearing and the oft repeated statement that we hear things we can't measure - assuming what they feel they hear is absolute and nothing to do with sighted multi-sensory comparisons aiding the mental process. The fact that these perceived differences disappear when the blindfolds go on probably causes total confusion, hence the stress-excuse referred to in earlier posts. Various audible? intermodulation distortion aspects in amps (severe enough in the 60's and 70's models by and large) were readily measured then but totally ignored in favour of THD at one frequency I recall, th eless benign aspects totally ignored or at least heavily played down...