Could also be a bunch of transistors in a package, there’s enough resistors there it could be discrete, hard to know without being able to read the top.
Looks pretty straight forwards, 2 stages capacitively coupled, 6C45 looks to be resistively loaded, looks like it uses fixed bias, but it’s hard to tell without seeing the other side of the boards.
Heaters all look to be DC and I think regulated, based on what look like 3 Pin TO220 packages I can see through the holes in the boards, I can’t see very much of what’s going on with the high voltage supply.
You really can’t tell very much of the interesting stuff from the shot, no idea for example what load it’s optimized for.
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Hello, would you be so kind to tell me if the ac purifiers are worth trying in some sort of configuration or another? If you dont know any of this information dont worry, im just gonna throw it out in case you know
I have a grounded dual outlet which my furman plus c 8 is connected on, the other outlet has my dacs PSU pangea c14s cable, connected to the conditioner are 3 wattage brand audiophile grade ac plugs, 1 regular pc plug.
Ive seen overwhelmingmy good opinions about stacking ac ipuriefiers.
But maybe getting a better conditioner would be better first?
This is all for future reference as I dont currently plan to upgrade any of this.
Honestly I see no noise problems currently on any of my amps (including tube) so I dont even know if this type of “upgrade” would do something positive for my sound, but Ive read it does smooth things out.
Like it’s true power output,
Or why mine hummed a fair bit…
(I should note i am being a little cynical here on the bad experience i had, which is probably unique to me)
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I’d expect it to be pretty quiet given what’s in there.
They ground everything centrally, ground is run from the pot directly to the pre tube input, DC heaters, if I had to guess, it’s probably some residual ripple on the DHT supply. Unless it’s just cross talk from the power supply transformers interfering with the output transformers.
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They work, it’s not a night and day difference, but they’ll take a good conditioner and make it better. The thing to work they need conditioners that have continuity between each of the receptacles as they inject an oposite signal to the noise they register. So in a conditioner like a Puritan that touts each AC outlet being isolated, filtered and powered individually from each other they wouldn’t have an impact.
When I removed them to hear differences, I couldn’t get them back in fast enough. They add to the overall black background but they also reveal more detail while removing harshness. Overall they removed a veil. I had one on each item I plugged in on the accompanying receptacle and one at the wall. The biggest impact though were in the amp and preamp as well as the power supply for my digital streaming components.
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Thank you very much, thats the info I wasnt being able to find
I own 8 of those little buggers and run them on my Streamers, DACs and pre-amps where possible, always one in the wall outlet that feeds my conditioner and then the opposite outlet that feeds each individual piece of kit. It was a bit expensive to do because needed so many BUT, yes I feel they do a good job in helping max out background blackness.
I too have often thought about an expensive sole dedicated conditioner costing thousands more than even my most costly unit BUT my power has always been noise free and clean so I have limited myself to adding reasonable layers in between that are a bit more cost conscious and to my ear and best of my equipment limitations they seem to do the job great.
Your Exogal is fairly sensitive to what it’s fed and is a good measure of the quality of your power and source components. It does a really great job with separation, space, bass impact and is neutral in the midrange and top end, with HP’s especially you should be able to see a nice little bump in presentation background with the ifi unit 
Good luck whichever direction you go.
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Thank you very much
I think my electricity is rather silent, I got very lucky with my houses light.
Im inquiring more in this “how to upgrade” in power conditioning, can you answer to this post when you have the time?
So yeah the Ac ipurifiers seem very good
A lot of expensive Iron in there.
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of note is the massive clocking upgrade to that JLsounds USB input board. Is this a Horizon?
yeah, there’s plenty of images in a wacky modding thread on WBF. The guy is upgrading and switching multiple components. There’s clearly a lot going on inside around the boards.
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The insides of the Zero Surge. All duplexes are supposed to be isolated. But I am not sure how that is if it is all connected.
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Maybe those black ferrules around the AC hot wire are diodes and that’s how they’re isolating it?
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I thought maybe that is it. But i would also think the grounds all being linked is not the best either. I did buy this as much more of a beefy surge protector for the non-audio stuff, but i am not sure where the isolation claims come from.
Tbh i only took it apart as the plastic plug around the mains was a little loose and i was looking to see if it can be tightened.
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The description says “Magnetically” isolated, so I assume it’s just a ferite core on the live which will do almost nothing.
It would be better if all the grounds were pulled to a single point but it’s probably less common than you might expect.
It’s a surge protector though rather than a conditioner, and the key point in the descriptions is none sacrificial, which means they aren’t using MOV’s which all the cheaper ones do.
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Would it be worth it to rewire all the grounds to be separate or just dont fuck with it?