Woah! Talk about a company's design DNA, it is there no matter what
Isn't this the same unit from the teardown but Amir just swapped opamps?Any tear down pictures of this particular sample to see if the workmanship, wire routing, etc., is consistent between both VTV units?
I thought it was a different unit sent to Amir by a different member.Isn't this the same unit from the teardown but Amir just swapped opamps?
Steel is a cheap solution, just like Apollon did with the Purifi Mini.
https://www.apollonaudio.com/apollon-1et400a-mini-stereo-amplifier/
No, both are owned by the same owner and hence back to back review. I need to get them back to him.I thought it was a different unit sent to Amir by a different member.
No, both are owned by the same owner and hence back to back review. I need to get them back to him.
They are indeed identical units sans the op-amp choice. I will do a teardown later tonight.
Stock buffers as in Hypex evaluation buffers. (I don't think they make any others.) I’ve read in other places these weren't intended for use in production use/builds.I'm curious to know just what you mean by "stock" buffer: are you referring to the Hypex buffer? I first order my VTV Purifi stereo amp, (i.e. single PSU version), with the Hypex buffers. Much to my surprise the high frequencies seemed bright and harsh, especially at higher volumes which I found intolerable. I replaced the Hypex cards with a pair of VTV buffers with Sparko SS3602 op amps which solved the problem.
This is not mine to mod. That is assuming I had the time for such a project which I don't.Maybe try add some ad-hoc shielding cans and tinfoil to isolate the input section if there is some EMI interference with improperly designed/laid out electronics?
I’ve read in other places these weren't intended for use in production use/builds.
You would think the same if you had read Amir's explanation after the conclusion. I agree. As much as he wants to recommend it he can't given the broken implementation.I've read both reviews and the teardown.
Performance: "superb", "top of the class".
Price: unbeatable (lower than sellf-sourcing the components)
Recommendation: nope.
Compared to some other reviews I find this very harsh.
I would understand if it was out of security concerns, but are we even talking about audible sound degradation here?
I know, to me that pic is eye-fi, but that one looks superbly put together. What amp is it from please?So you reckon that L-shaped piece of metal is steel for shielding purposes? It looks about 3-4mm thick.
View attachment 140603
The rest of the chassis is supposedly Aluminium.
View attachment 140602
I've read both reviews and the teardown.
Performance: "superb", "top of the class".
Price: unbeatable (lower than sellf-sourcing the components)
Recommendation: nope.
Compared to some other reviews I find this very harsh.
I would understand if it was out of security concerns, but are we even talking about audible sound degradation here?
I know, to me that pic is eye-fi, but that one looks superbly put together. What amp is it from please?
That's the Apollon Purifi mini someone mentioned. It's about the only one of these Purifi jobs that is mildly appealing IMO. Not cheap, but very well executed. If I wanted a Purifi power amp, I'd buy that one. And, thank goodness, properly earthed. Nice set of adjustable gains, SE and Balanced, dimmable logo and proper rear panel markings.
https://www.apollonaudio.com/apollon-1et400a-mini-stereo-amplifier/
If it is, and if it worked, it would be by pure luck. As I wrote earlier, you can't shield magnetic fields like this. So much so that there is just as good a chance that a random lump of steel placed like this could concentrate the field somewhere you really don't want it. Magnetic and electrical fields work in fundamentally different ways and you can't use an intuition from one for the other.So you reckon that L-shaped piece of metal is steel for shielding purposes? It looks about 3-4mm thick.
If it is, and if it worked, it would be by pure luck. As I wrote earlier, you can't shield magnetic fields like this. So much so that there is just as good a chance that a random lump of steel placed like this could concentrate the field somewhere you really don't want it. Magnetic and electrical fields work in fundamentally different ways and you can't use an intuition from one for the other.
∇.B = 0
∇.E = ρ/ε0
Unfortunately, they don't provide measurements to prove their buffer does no harm.That's the Apollon Purifi mini someone mentioned. It's about the only one of these Purifi jobs that is mildly appealing IMO. Not cheap, but very well executed. If I wanted a Purifi power amp, I'd buy that one. And, thank goodness, properly earthed. Nice set of adjustable gains, SE and Balanced, dimmable logo and proper rear panel markings.
https://www.apollonaudio.com/apollon-1et400a-mini-stereo-amplifier/
This is not mine to mod. That is assuming I had the time for such a project which I don't.