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Sander deWaal a écrit :
Just a quick note:
(Bruce J. Richman) said:
Stephen wrote:
Is there a circuit-designing statistical advantage to ICs?
If you want to go the easy way, yes.
All one has to do is to create a power-opamp, meaning an unit with
high input impedance, low output impedance, and high gain.
The amp's parameters are then defined by only 2 resistors.
Throw in a good power supply, and voila, a new amp is born.
Of course, this is a very simplistic view of how it's done, but
essentially it's just that.
And it's just as exciting as watching paint dry, note.
Every EE could do this in his sleep, you will note.
This is NOT an evaluation or judgement about the Gaincard amp, I'm not
familiar with this particular unit.
I'm serously considering the purchase of a rather expensive integrated
amplifier, but have wondered if the compromises involved - compared to
separates - are all that serious. For the particular brand involved, the
separates would be at least twice as expensive, offer no power advantages, but
*do* feature Class A operation whereas the integrated runs in A/B. Both their
integrated amplifiers and their power ampliiers regularly get accolades from
many reviewers. The brand is Plinius. Comments are welcome.
When time permits, I'll do a search on this amp and be back to you.
In the meantime, I've spoken a fellow repairman who told me that ML
panels are prone to lose efficiency to up about 50 % after ca. 10
years. Yes Bruce, I'm still thinking swapping the CJ Premier 11 for
whatever other amp might not be such a good idea :-)
Concerning "Gainclone" and "easy to built" amp. I have bookmarked this
site few times ago. It seems to be interesting :
http://www.briangt.com/
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