[sdiy] The final cut power amp!

[Metzger, Michael A]

A company called 47 Labs was bragging that their hi-fi amp called the Gaincard
had only 9 parts 
http://www.sakurasystems.com/products/47amp.html
Its an IC based amp. This inspired a group of DIYers to clone it - they call it
the Gainclone. Here's a schematic  http://gainclone.com/invertedLM3875_r2_1.gif
and here's the forum where they kick around ideas. 
http://ampchipdiy.com/phpBB2/viewforum.php?f=2&sid=2a97c8a0aee1ab3684164c16cacf4
6ec
They play with LM3875's, LM4780's, etc. Amps don't get much simpler than these
babies. And they are supposed to sound real good. 

And since you were a little nervous about it.....
CAUTION: Hifi freaks do roam that forum and it does seem to be some kind of
cult!  =8o

Mike


-----Original Message-----
From: owner-synth-diy at dropmix.xs4all.nl
[mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of karl dalen
Sent: Saturday, January 15, 2005 10:42 PM
To: synth-diy at dropmix.xs4all.nl
Subject: [sdiy] The final cut power amp!


Hi!

In these days of  HD recording in wich im about to enter
i'm looking for a (master mix) monitor amp, not to buy
but to design/build my self, im interested in your ideas 
and suggestions into this venture of mine!

Im not looking for large output powers, but more of "high quality"
at decent levels, (10-50W) since the speakers is merly a metere
away, also it must be very simple because i might do the full 
5:1 surround sound so all power amps has to fit into one tiny
box on the desk.

So to start somewhere i asume at least MOSFET, class A, A-B?
Is there any single chip Mosfet amps worth concider?
Is there any decent public domain designs on the net
as design apethezzer?

Your ideas and toughts most wellcomed!

Reg
KD

PS:The last place in the universe i want to visit in this venture
of mine is the corner where the HIFI freaks are located, that would
only end into a big confused "nothing-and-hundreds-of-sugestions"!