Doepfer

The pcb has not changed. Just the serial resistor at the audio input(R15)
has been reduced from 22k to 10k to increase the input sensitivity. R15 is
located behind the audio input level control below C1/10u.

Version 2 of the A-120 with the transistor arrays has been equipped from the
first series with 10k instead of 22k.

Best wishes
Dieter Doepfer

> Am I right in thinking that at some point the A-120 was revised
> to allow a higher drive level? If so is there a revision/date on
> the PCB which could be used to identify this?
>
>
> Martin

Am 26.09.2016 um 10:31 schrieb yahoo@doepfer.de [Doepfer_a100]:
> The pcb has not changed. Just the serial resistor at the audio input(R15)
> has been reduced from 22k to 10k to increase the input sensitivity. R15 is
> located behind the audio input level control below C1/10u.
>
> Version 2 of the A-120 with the transistor arrays has been equipped from the
> first series with 10k instead of 22k.
And just for the "I-dont-develope-I-solder-only"-people: you don't have 
to desolder R15. Sou simply may solder another 22k parallel to the 
existing R15.