Hello James

james.husted@... wrote:

> I have the first generation A-151 in my rig. It is the older one that
> is restricted to +/-8V and doesn't have the toggle switch to change
> the step range. Can anyone out there with the latest version tell me
> what chip they are using for the multiplexer/demultiplexer chip in
> the new one Thanks

The new chip is a DG409, where the old one is a CD4052.

Those ARE NOT COMPATIBLE!!! You cannot replace the old chip with the new
one!!!
The new A-151 uses a different pcb!

Florian