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NEW BRZHifi PAD-30 : Dual TPA3255 +PFFB @ $99

xanalog said:
BrzHiFi PA-10 has/had an Easter-Egg on its main PCB, that most owners don't even know about... and is quite the trick (see green arrows below):
View attachment 505833
Clever though they may be, I was never able to determine what (part of the audio spectrum?) excites/triggers the pulsed/strobing of these two thin and buried LED strips.:facepalm:
Click to expand...

They are flux capacitors, which decrease SINAD to -200dB and extend the frequency response to 10GHz. :D:D:D
 
I don't know how to describe this brand. A small workshop? But now it should be a rather large company. Because it's cheap enough, its sales both at home and abroad should be quite good.

It's a pity that it's not a Japanese brand. With the spirit of craftsmanship and pure handmade production, I can't imagine how high the price could be!;)
 
The inductors shown on the photos don't exactly inspire confidence, but maybe they perform just fine for the price.
 
jayapple said:
I don't know how to describe this brand. A small workshop? But now it should be a rather large company. Because it's cheap enough, its sales both at home and abroad should be quite good.
Click to expand...

I've owned several Brzhifi amplifiers and DACs. I've never had any problems, but on the other hand, I've never had any measurements taken.)
 
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@daniboun This looks like a really interesting amp but I'm a bit cautious - if you put it next to the 3E A7 (which it directly competes with) the sizes of the capacitors and filter coils just don't look right on that one single internal photo we get. Don't you think it's a bit suspicious? I'd love to have it, run it with the 42v 8.5A adapter and never have a heating problem with my super efficient vintage 3-ways...
 
krisdeak said:
@daniboun This looks like a really interesting amp but I'm a bit cautious - if you put it next to the 3E A7 (which it directly competes with) the sizes of the capacitors and filter coils just don't look right on that one single internal photo we get. Don't you think it's a bit suspicious? I'd love to have it, run it with the 42v 8.5A adapter and never have a heating problem with my super efficient vintage 3-ways...
Click to expand...

We should have the component values rather than judging by size. In any case, with the plethora of TPA3255s available, we're spoiled for choice after all.))
All that remains is to hope for a test from Amir or a third party with an E1DA COSMOS or similar device.
 
Hi amigos,

Find another interesting Mono TPA3255 with good flat inductors (Measurements provided)

www.audiosciencereview.com

NEW Nvarcher TPA3255 Mono Module with Flat Inductors. Measurements inside. $35

Hi amigos, I'm sharing a little discovery at a very reasonable price. I found this module particularly interesting, even though it doesn't seem to have a PFFB circuit. The components seem to be of good quality, especially the flat coil inductors. This module reminds me a bit of the 3E AUDIO...
www.audiosciencereview.com www.audiosciencereview.com
 
daniboun said:
We should have the component values rather than judging by size. In any case, with the plethora of TPA3255s available, we're spoiled for choice after all.))
All that remains is to hope for a test from Amir or a third party with an E1DA COSMOS or similar device.
Click to expand...

We are spoiled for choice but with PFFB the choices are much less wide and much more expensive. To me, this one stands out as it's the first amp that has PFFB and is under 100 USD - the next PFFB option is the much weaker Topping 300 Mini right now.
 
daniboun said:
Find another interesting Mono TPA3255 with good flat inductors (Measurements provided)
Click to expand...
If your desire is to go full minimalist with Henries; this may lower the price:
PrePostPBTL.png

(Measurements provided)
PrePostPBTL02.png

PrePostPBTL03.png

by ti:
mhardy6647 said:
The negative value's OK for DANIS, though.
Click to expand...
I can handle DANIS but "Negative Frequency" has always thrown curve-balls at me, since college days!:mad:
 
daniboun said:
Main spec :
PFFB
Dual TPA3255 (seems to be a one chip per channel)
Trigger
Pre-out
Upgradable Op Amps
Click to expand...

It's a plastic case?
is that why the sorta odd speaker outputs with that daughter PCB the speaker binding posts are connected to?
I'm not a fan of they way they are running those long traces on the PCB after the output filter and that physical pin connector between the main PCB and the daughter PCB. It seems soldered wires from the PCB direct to the binding posts would be better.
maybe these, presumably cost cutting, features don't degrade the sound?

I wonder if this design was done for QA/testing purposes - easier/cheaper to automate testing of the boards with that easy to plug into pin interface.
 
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truth_soldier said:
It's a plastic case?
is that why the sorta odd speaker outputs with that daughter PCB the speaker binding posts are connected to?
I'm not a fan of they way they are running those long traces on the PCB after the output filter and that physical pin connector between the main PCB and the daughter PCB. It seems soldered wires from the PCB direct to the binding posts would be better.
maybe these, presumably cost cutting, features don't degrade the sound?

I wonder if this design was done for QA/testing purposes - easier/cheaper to automate testing of the boards with that easy to plug into pin interface.
Click to expand...

The design sounds good for me specially for that price. If you look at the Topping LA90 the speaker wires work on the same way via a PCB mini board.....
 

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daniboun said:
The design sounds good for me specially for that price. If you look at the Topping LA90 the speaker wires work on the same way via a PCB mini board.....
Click to expand...
for the price sure. But notice how close the caps and coils are to the binding posts in that LA90 pic.

I find it odd that the output filter caps+coils are so far away from the PCB edge and the binding posts in the PAD-30.
 
It'll be interesting to see how long a cohort of, say, 100 of these units functionally survives regular use "in the field".
 
mhardy6647 said:
It'll be interesting to see how long a cohort of, say, 100 of these units functionally survives regular use "in the field".
Click to expand...

I've owned several Brzhifi amplifiers and DACs and I've never had any problems... just like with my Hypex, Topping, and Wiim amplifiers.
 
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