Hi Tim
> It
> is caused by the transistor (Q5) which is used to 'switch' between the
> decay and sustain phases: basically it doesn't switch off completely,
> allowing a very small current to pass through, thus causing the
> sustain level to drift downwards over time (I measured about a 0.2V
> drop in about 35 secs).
Ok, now I remember; this is known from many similar circuits.
> If you want a stable sustain level over time,
> you cannot do it with an A-140!
Assumingly true.
Florian
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Florian Anwander |ConSol* HP-Support
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