@mozartfan please dont get your feelings hurt, its not about your feelings. We are all here to learn…you just seem so anxious to progress to expert level that you skip right over the lessons we all need to learn. We are all on the journey but you simply jump the gun at every opportunity, over anxious to exclaim your knowledge.
Regarding your price comparo above, please do be sure to account for full insurance and shipping as well as the duties and costs to import, which primaluna includes in its prices. Factor that many direct from China personally imported items dont have authentic parts and tolerance of those parts can be difficult to validate. Also please also place a value on after the purchase service and warranty. When your yaquin amp requires service, what is it worth to you to know that in advance? Lastly factor longevity in business and resale value, which the stellar track record of service, support and warranty contributes to greatly. You think your amp is less expensive but the cost of ownership will exceed the primaluna.