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yes... I have a pair of AMP15.

DC does increase slowly... I have tuned the DC offset to be -20mV at start up.

After turned on, it will increase from -20mV up to around 0mV.
This process takes...

Do you have specs on the dimension ??

AMP9 has 4 channels, so it can bi-amp 2 speakers.

AMP4 has only 2 channels, so you need 2 to bi-amp 2 speakers.

I will go for AMP4...

Although AMP9 is cheaper than 2 x AMP4, AMP4 has output relay and audio quality is slightly better.

I think IPP should be the current that needed to charge the mosfet.

It is strange that happened to you.

I had built a 6 AMP11 so far and they are working perfectly until now.
Did you have a heat sink attached to the power chip ??
Did it over heat ??

I am interested in buying the new kit if its going to happen.
It sounds interesting.

But I am afraid I don't have much electronics knowledge to contribute :)

Interesting stuff.

Have you try 6ohm load and 4ohm load.

What would the curve look like ?

http://www.amb.org/audio/lcduino1/

Has anyone seen this..
It can uses as a preamp controller with volume control

AMP11 can handle low impedance, most difficult to built, no output relay.

AMP4 has output relay, easier than AMP11, has power supply/rectifier on board.

AMP15 has no output relay, easiest to...

AMP11 is paralleled compared with AMP4

Both AMP11 and AMP4 is bridged.

Interesting..

Any one heard of this Tripath chipsets (TK2070) ??

It uses TC2001 and another power stage chip.

My friend was searching for cheap china made Tripath boards and found this site.
...

Anyone notice there is a new step down power supply coming out ??

I have built several AMP11...
I always check the joints are properly soldered before I power on.
(BOTH driver chip and power chip)

When the HMUTE led lights up, it means there is a hardware fault.

There should be DC coming out from one of the AMP11.
Once I smoked one of my AMP11 because of bad solder connections.
It was...

I measured voltage output from transformer without load was
35.2V

After I connected those 2 AMP11, the voltage is 34.0V at the AMP11 power terminal. (With Load)

There is a rectifier diode on...

Those are from Taiwan..

http://www.diyplus.net/shop/product_info.php?products_id=63&language=en

The site is in Chinese..

http://diyplus.net/phpBB3/viewtopic.php?style=12&f=4&t=831

I am a...

Here are some pictures of the inside.

http://gallery.me.com/wongmichael/100003/Transformer/web.jpg?ver=12533555990001
...

http://gallery.me.com/wongmichael/100003/AMP11LV-DDX2160/web.jpg?ver%2012485057510001%20br%20/

Eventually I put 2 of these (AMP11-LV with APOGGEE DDX2160) into the case and connected everything...

I tried to download with different computers...

Still failing..[xx(]

I am using my AMP15 to drive a pair of B&W 805s.

There is a loud pop sound when I turn on the amp.
I am trying to download AMP15's schematics to see if I can do something to stop the pop sound.
...

As Tripath's chip requires a low noise 5V supply....

I came across this web site...
http://www.paulhynesdesign.com/page6.html

Please advise...
Are there any other low noise 5V regulator...

http://www.tpdz.net/produce.asp?id=11

The web site is in Chinese....

Basically its a 2024 integrated amp...
My friend bought 2 of them last week...
( $RMB438 + $20 shipping ) = $RMB456...

Yes, I think these are 2 types of windings methods...