So I searched for a while, followed your advices and stayed with one of Lazycat amplifier, as I think it's AB class. I would like to order parts today or tommorow, so can you tell me if it's good choice? How big pot should I put before the input? And can you answer my ;ast question about headphone output 
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.... so can you tell me if it's good choice?
How big pot should I put before the input?
And can you answer my ;ast question about headphone output
regarding Lazy Cat's amps...he has good support .....
but be aware there may be many schematics floating around in his threads
for modern low impedance source output, a usual att pot on input for solid state amp would be 10-20K
but depends
I don't know his amps's in detail
why not ask him ?
regarding your about headphone output, we have a dedicated forum section for that
I think 10K to ground on input sets the input impedance
if so, then it may not be suited for a passive pot on input, due to impedances
a very simple buffer between pot and amp input solves that
maybe you can mount bigger input resistor, but I don't know
and like I said, he may have 3 or 4 different threads, all with multiple different amp schematics
please talk to the man himself
btw, his latest and most simple amp may be just the thing for you...VSSA....or somthing like that
and there is even a cheaper BJT version of it too, somewhere...(not built yet, but I might be tempted)
if so, then it may not be suited for a passive pot on input, due to impedances
a very simple buffer between pot and amp input solves that
maybe you can mount bigger input resistor, but I don't know
and like I said, he may have 3 or 4 different threads, all with multiple different amp schematics
please talk to the man himself
btw, his latest and most simple amp may be just the thing for you...VSSA....or somthing like that
and there is even a cheaper BJT version of it too, somewhere...(not built yet, but I might be tempted
)
I talked with Lazy Cat, I will put 20k attenuator pot and replace the resistor to 20k. I'm ordering parts for VSSA.
ALF08NP16V5 - these are kind of odd transistors and I can't find them in Poland, except Farnell ( which is ordering them from UK...) and they are quite expensive, but I will live with it
ALF08NP16V5 - these are kind of odd transistors and I can't find them in Poland, except Farnell ( which is ordering them from UK...) and they are quite expensive, but I will live with it
The CG is probably the modern "green" (RHOS compliant) version. The other one probably is just an older part in stock and if available would be more expensive.I mistook farnell for some other site, which sold them for nearly 25$/1pc.. Farnell has "fair" price so there's no problem, i'm looking for other ones
Should I care if I order for example BC550CG or BC550C? Any difference?
Go for the CG, no problem.
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