Hi AK, First up the speakers used with the Scott amp were Spendors and no one of my knowledge has ever accused them of being bright. The amp I described that you mention, the 211 tube SE amp from the guy in New Zealand is a homebuilt. You would have to work off the photos of his amp and the schematic. The OPT's are difficult due to very high B+ voltage. They are expensive. He built his version for 1100$. If you are interested I have a long and very detailed build guide with photos and schematic, it is a very conservative design that puts out 20 watts SE.