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Old 1st April 2012, 05:23 PM   #1
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Default "Reference to A2" what is this product?

I was just looking on the internet for class A amplifier boards/amps (out of curiosity from the thread on the chinese clones) ad found this site and product

100W Mosfet Pure Class A SE amplifier PCB stereo pair ! | eBay

I am in no way stating ot implying this seller has slavish imitations of NP's designs but I was curious. In the product description wer have a "reference to A2" is this intended to be a reference to the Aleph series?

Can anyone elaborate on what this product is? Is it a fair application of NP's designs or is it totally unrelated?

Thanks
Alex
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Old 1st April 2012, 05:29 PM   #2
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Aleph
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Old 1st April 2012, 05:37 PM   #3
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yes it is based on aleph2.
and useless boards if you ask me
and no. i do not belive he has nelsons blessing.
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Old 1st April 2012, 05:40 PM   #4
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why are they useless?

There might a problem then if the quality is that bad but I guess they got away with the century old "reference to" formula to avoid liability.
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Old 1st April 2012, 05:46 PM   #5
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buy them or not

your choice

I would not , strictly from respect
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Old 1st April 2012, 05:47 PM   #6
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try to dissepate 300W from one heatsink, and look how big i gets
there is a reason for aleph2 being monoblocks
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Old 1st April 2012, 05:51 PM   #7
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@Zen mod I do not want to buy them. Trust me I have my hands full with one of the most challenging projects yet:

High voltage driver for AB2 operation GU81m tubes

2KW from tubes...kicks an aleph 1.2 in the behind in terms of construction requirements. 1000w only for filaments

I was just trying to understand what is happening on the web with pass products.

I understand this may have been a wrong (poor rather) choice of topic. Please cancel the thread.

Best
Alex

@AudioSan I understand...it is not an inherent flaw in the design but rather a poor choice of layout.
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Old 1st April 2012, 06:02 PM   #8
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no need for thread canceling ....

edit: did I told you that you're nutz ?



AB2 with GU81 .........
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Last edited by Zen Mod; 1st April 2012 at 06:05 PM.
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Old 1st April 2012, 06:05 PM   #9
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BTW I think you should have a sticky in this section about exactly what is the situation in regards to Aleph products, their clones (authorised manufacturers), advice and/or caveats you wish users to know about.

A guide to the world of Pass clones so to speak.

Just a suggestion..
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Old 1st April 2012, 06:17 PM   #10
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Quote:
Originally Posted by Alexontherocks View Post
@Zen mod I do not want to buy them. Trust me I have my hands full with one of the most challenging projects yet:

High voltage driver for AB2 operation GU81m tubes

2KW from tubes...kicks an aleph 1.2 in the behind in terms of construction requirements. 1000w only for filaments

I was just trying to understand what is happening on the web with pass products.

I understand this may have been a wrong (poor rather) choice of topic. Please cancel the thread.

Best
Alex

@AudioSan I understand...it is not an inherent flaw in the design but rather a poor choice of layout.
yes. i was thinking of the layout designflaws it don't know. and will not find out

regarding aleph PCB's. i only know of KK-PCB design. he have alot of aleph boards. and chipamp.com
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