Thanks Martyn, I'll probably take that route, buying everything from Farnell.

Primary concern is power supply output that is low voltage (max. 50 Vdc) that is isolated.

If we need to make any measurement on the HV side (up to 600 Vdc from rectified 1- and 3-phase AC mains) what you'd like to recommend for probing?

I'd like to use it to measure ripple and noise on power supply output. Should I use D9 to dual BNC adaptor and use two coax cables or single ended probes in that case?

Thanks Martyn, should I go with PicoScope® 4444 and four D9 to single BNC adaptor to have 4-ch differential scope that can be used with four single ended probes?

I'm looking at PicoScope® 4224 that is presented as scope with differential inputs. I'm wondering does it come with probes, and is it possible to use standard 1x/10x probe (e.g. from my existing Tek or Rigol) for performing differential measurements.

Thanks in advance.