Hello all. Rubens and myself have been comparing spurii levels between the SA44 and the SA44B. The subject of the pre-amp came up and purely by chance I discovered that I don’t see the expected noise level reduction when using the pre-amp. I’ve tried at various freq’s and spans, and at many settings of ref level etc, but switching the pre-amp on/off does not have the expected result.
I’m sure it worked with the old 2.xx software!
Andy.