The 22 and 2 are quite different in their approach which I think several have eluded at already. When propely set up the 22 has immense potential. The capability to roll / try new flavours is huge which is why I love it. The 2 however is much more limited here. The output tubes are sorted with GECs. The rectifiers are fine and you can swap these but as much as everyone loves the 'ecc88 / e88cc / 6dj8 / 6922 etc etc' this is the limiting factor. The tube is very fashionable atm with everyone seemingly using it but when you get to try some of the older and bigger tubes you see the limitations. I love the ecc88 tube and have hundreds to roll but this is what is holding the 2 back. On the 22, stick in 6F8G, BL63 you will see a decent jump in quality over a huge range of already excellent 6SN7s. These are probably a better sounding tube to the 88 if all else was equal to start with. There are lot's of fine sounding tubes out there we are not using that Woo or others can exploit (2C51 / 5670, 6BL7GT / 6BX7GT, DHT (Direct Heated Triodes). Some tubes are seriously underpriced for what they are but we are using them for headphone amps like EF91, EF92, EF94, EFS95. Then there are the 'fashion' tubes where people spend telephone numbers for tubes. Huge drive to get the ultimate version of an average tube. Unfortunately this is where we are with the ECC88 (and alternatives) but this one is widely available unlike the 'quality' DHTs. We are probably here because of current manufacture. No interest in a quality tube like Mullard ECC88 or Amperex 6DJ8 but obsession for a gold pin CCa. No interest in some amazing Russian variants also.The 596 is now going this route, but a lovely tube that not so long ago was $10. I think of it as an inside out 5U4GB, another lovely tube which is now much cheaper than the 596! Way too much fashion here and too little engineering and people trying stuff for themselves. The 596 DOES have a very different look in an amp that some will go for, not my scene (though I have them). Rant over (sorry
) but basically with what Woo has given us on the 2 and 22 then there is much more room to grow on the 22 and do this much less money.