Sun Valley vs Sun Audio 300b


Any thoughts on how they sound?

 

Sun Audio is extremely simple circuit with no NF and Tamura.

Sun Valley is more complicated circuit w/GNF and Hashimoto.

 

I don’t mind building either, but hard to find anything out there comparing how they sound. Each has sales reps in US that want to push their own.

Sometimes simpler is better, other times stability is better.

thanks in advance!

 

 

clustrocasual

@clustrocasual amazing thanks for the detailed reply. I will try and learn some from Skunkie’s work on the Sun Audio. 
There seems to be more awareness about the Sun Audio amp I guess maybe because it’s been around for longer in its current form. 
I get the feeling the Sun Valley may not have had the Hashimoto as standard for as long. 
 

Out of curiosity what is wrong with GNF?. Is it considered a less pure design as in if it was a better circuit it shouldn’t need it ? 
 

 

 

I've gone back and forth on the Sun Audio. It is true that simpler circuits are _not always_ better and I think it came from the hazy days of japanese jazz kissas. think NOS speaker cabling, WE , Beldon etc. Those are all fine, but not really what I've been building in my own systems. I prefer things a bit more modern. 

 

I looked at AN's 300B's going back a couple decades. I couldn't see all the schematics but they are not as simple as the Sun Audio and they moved away from 6Sn7. But AN and everyone else says, why bother running 300b in NF... I agree, makes no sense in single ended design. Rather, put higher quality components in. Before I buy I may as the question on Victor's DIYAudio thread.

Also, I have an idea to sandblast and paint the SV chassis, so I'm a bit up to the challenge. 

 

 

Also, I agree SV maybe new to Hashimoto - and it might mean this is a good opportunity! I did ask Devon on his OJAS instagram which transformers he preferred (Tamura versus Hashimoto) and he gave a waffling answer :). Hmmm he has to support SV, after all.

@clustrocasual I am also interested in your quest. Seems like one day I will have to build a 300B and have followed Skunkie and others on the topic. The thing about Vikto Kung is that it is not clear how you buy from him, at least from what I have read on DIYaudio. Please continue to relate your experiences on this thread.

just a FYI......i had two Don Garber Fi integrated 2a3 amps, one with Hashimoto and the other with Magnequest.....the difference in sound was substantial, Magnequest was much better, and more focused.

That was the second amp i had with Hashimoto, the other a Triode Labs integrated and again in that circuit they sounded lean and flat (maybe I mean more linear less passion) that the Fi.