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Do you could post both specs and photos to comparison?
Unfortunately they are Ultralinear not Triode and use PCBs, the buyer have to aware that are buying not a purist amp.
I would do some research on it if I were you. I bought a new JD302B in 2004 for $800, 60W vs. the 202 @ 40W. I could have got a JD202 for $630 + $40 shipping. And I believe the SG models were before the JD models, so it's possible the SG you mention could be pretty old. Did you ask your friend when it was manufactured?But I did like the amp, as well as a couple other Jolida products (100W tube amp, CD player)
I don't quite understand what's so unfortunate about an "Ultralinear" tube amp, whether they use PCBs, SET, etc doesn't matter its all about personal taste, budget. There's also no discernable difference in sound between a point to point wiring and PCB's besides marking snake oil. Many "want" to believe they truly hear a difference because they want to justify the amount of money they spent on audio equipment, especially tube audio. Unless you have an engineering degree in electronics and special tools to truly discern the difference I enjoy Jolida brand, Cayin, and other Japanese, Chinese made tube audio for the money they perform just as well as their counterparts costing 3X or 10X more...
I would take care if purchasing older tube amps: ascertain if the model is generally reliable/safe and how easily they can be repaired and get a use and service history of actual amplifier. Still, you could just purchase: only you can know if you are willing to drop the $$$ and take the risk on something than might not be reliable/safe.You almost hit the nail on the head with your comment about people wanting to believe, but missed that confirmation bias cuts both ways: some people don't want to believe a difference exists because that is more aligned with their belief system and desire to be worthy. It’s what humans do.Sure a well implemented PCB can sound better than a crappy point-to-point. And vice versa. For a tube amp, I believe well done point-to-point is potentially superior in presenting music and reliability and ease of repair/maintenance. However, point-to-point will not be practical for some builds.I’d expect amps that costs x3 or x10 as much to offer something better, but sometimes they don’t... but now we are into people’s beliefs and expectations and they will be different for each of us.If I were running a system that needed the power and damping factor of PP and feedback I might find it difficult to justify a PP IDH pentode/UL amplifier these days.
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