Hi!

I´ve asked Allen & Heath tech support what chips they used for the VF-!
analogue valve stereo-filter. I didn´t get much wiser from the answer
though.
Maybe some one here knows about the chip SSM2164

(As you will see this is cuts from 2 different e-mails)

>>>The active circuitry in the VF-1 is based on the SSM2163 Quad VCA IC in

an analogue filter configuration, supported by standard TL072 op-amps
and of course a pair of ECC82 valves.

>Thanks for your reply. Please note the typo in my last reply and the fact
>that it is the SSM2164, not 2163 IC that is the active VCA.>>>

I´m curious, cuz I really love the sound of this machine, and I wonder how
much of this amusement is due the valve/overdrive section...

>