Hi Ninjafox,
There isn't that much difference between the GQ SS and the GQ SS V2 in terms of sensitivity. There were a few small changes made but nothing dramatic along those lines.
The difference between the two is the V2 coil is wired differently and will allow the use of DD coils (an adapter is required). Also, the V2 has a double filter that does help with ground signals. On the V2 model, you can use ML coils if you use an adapter. Now, you could change the connector on the unit to the ML type connector and eliminate the need for the adapter.
So, the V2 works better for use in the gold fields than the original GQ SS.
As for adding a probe, this can be done but would require some wiring, another connector and a switch. It may need a resistor also. One would have to try it to see.
Now, you could change the connector on the probe and switch from the coil to the probe by switching at the connector. So, there are different ways this can be done.
No, you can't connect and operate with both the probe and the coil at the same time. You have to switch between the two.
Reg
