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Buckeye Amps: Purifi 1ET6525SA (the successor to the 1ET400A)

jamesdyson said:
I thought it was established that you AP was well within spec? If I remember correctly you said AP confirmed it was? Sp how are you going to resolve this shortcoming?
So is the performance you are quoting on the website the module spec or that of the final amp with buffer?
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Still working with AP.
 
jamesdyson said:
So the performance you are quoting on the website is that of the module, not an amp with buffer.
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Correct. But it is the same exact buffer board we have been using with the 1ET400A, which has been reviewed before. So no worries there.
 
jamesdyson said:
Sorry if I'm being OCD about this but I want to establish facts before I part with cash, so I do worry.
This is the same buffer you are using in the new 9040 amp? According to the Purifi data sheet the module sinad is about 117dB at 5 watts. Your data indicated a sinad of only 105dB at the gain level I require to use a standard 4 volt dac as a source.
So it seems reasonable to conclude that this new 6525 amp will also be limited to that level regardless of how much better this new module performs.
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That is the penalty for using higher gain.
And the 9040 board is a different design.

So not the most reasonable conclusion.
 
Not to be direct but you clearly question our buffer board implementations. If that is the case, there are other options out there. Don't really feel like rehashing the same talk from the 9040 thread here.
 
jamesdyson said:
Yes I do. I think its clear there is a bit of obfuscation going on here. It's the APs fault, can't show you the data from the improved e1da dac, can't show you the data for this new 6525 amp. You publish module performance not the amp performance on your website.Thanks, I will look at other options.
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No worries!
 
Buckeye Amps said:
$50 more
And no, still using the 1612 (which, again, is what Purifi uses for their reference board designs outside the 9040). And gain stage staying the same.

It is essentially form fit/function of the 1ET400A so no need to refresh input board, etc.
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It appears the 1ET6525SA's Gain settings have been slightly revised according to your website, they're now 26dB (High), 21dB (Med), 16dB (Low) compared to the previous 1ET400A & 1ET9040BA, 1ET7040SA which are 25.5dB (High), 20.5dB (Med), 15.5dB (Low).
 
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Yes, you're quite right, just like the terribly dull Denzel Washington film it's "The Little Things" that matter ;)
 
Hi Dylan,
I would ask you.
Will you bring a 1ET6525SA Monoblock.

Thanks in advance.
Edmund from Germany
 
Stereoed said:
Hi Dylan,
I would ask you.
Will you bring a 1ET6525SA Monoblock.

Thanks in advance.
Edmund from Germany
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Most likely not. With the 9040BA monoblock, there isn't much motivation to offer the 6525SA as a monoblock, especially since the outgoing 400A monoblock configuration was not very popular.

The 2ch configuration is the perfect sweet spot instead of a pair of monoblocks.
 
The power rating for the 6525SA is 230 W @ 8ohm and 480 W @ 4 ohm. Is it correct that it's 109% higher @ 4 ohm? For the 7040SA and 9040BA they are exactly 100% higher and I think the 1ET400 was a bit below 100%.
 
franzhaenel said:
The power rating for the 6525SA is 230 W @ 8ohm and 480 W @ 4 ohm. Is it correct that it's 109% higher @ 4 ohm? For the 7040SA and 9040BA they are exactly 100% higher and I think the 1ET400 was a bit below 100%.
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Yes, that is correct
 
Buckeye Amps said:
Yes, that is correct
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More voltage output into 4 Ohms than 8 Ohms. So the voltage output clip level increases as the load impedance decreases, That is certainly a new type of amplifier design :)
Or just different distortion levels for the 2 specifications?
 
Buckeye Amps said:
Heads up that we will finally be sending a Purifi 7040SA v2 to Amir for an official review.
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@Buckeye Amps I know this was quite some time ago but I was just wondering if you actually sent your 1ET7040SA v2 amp with Micro Audio's SMPS1K-PFCR2 to Amir for review?

Also I know it's very much a moot point now that you've discontinued your 1ET7040SA amp but did you ever end up offering a 2 Ch variant of the 1ET7040SA, you had briefly mentioned that it would arrive at some point?

You had mentioned the following in your Buckeye Hypex NCx500 official thread,
Another added bonus is this new SMPS will also be used to eventually offer a 2ch Purifi 1ET7040SA model, capable of full power just like the monoblock version.
The 2kW Micro Audio we are using for the 3ch NCx (and eventual 2ch Purifi 7040SA) will be exclusive to Buckeye Amps for the next 3yrs.
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Oniiz86 said:
@Buckeye Amps I know this was quite some time ago but I was just wondering if you actually sent your 1ET7040SA v2 amp with Micro Audio's SMPS1K-PFCR2 to Amir for review?

Also I know it's very much a moot point now that you've discontinued your 1ET7040SA amp but did you ever end up offering a 2 Ch variant of the 1ET7040SA, you had briefly mentioned that it would arrive at some point?

You had mentioned the following in your Buckeye Hypex NCx500 official thread,
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Most likely not planning on a 2ch 7040 anymore, no.
 
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