Audio scope for AC measurements

[rayma]

Would it be safe to say that a person should get a set of differential probes to prevent an accidental short when testing powered equipment?

Example: John Doe spent his entire life using floating measurement devices, like digital multimeters. He could very easily (in a moment of forgetfulness) try to measure the voltage across a resistor in an amplifier without recalling that the ground clip is at mains earth ground. Instant short, destroying the DUT and maybe the scope.
I have heard some scopes have differential/isolated ground inputs to prevent this, but no idea what makes/models.

Never connect a non-isolated probe directly to the mains. That is very dangerous and foolish,
including floating the scope. This is why so many old Teks have bad power transformers.

Isolated differential probes will generally have considerable attenuation, from x1/50 to x1/1000.
As far as inside powered equipment, one must have constant awareness and diligence to safely
use an unbalanced, non-isolated voltage probe. Mistakes are easily made, and probe clips slip
and short to the wrong circuit nodes. For over equipment containing over 50V, the probe should be
attached while the circuit is unpowered, and also removed while unpowered.

Some think a battery powered scope can be floated at will for differential measurements. but do not
consider the voltage isolation from the scope to ground, which may be unspecified or unreliable.
An example of one scope that is specified:
https://www.fluke.com/en-us/products/electrical-testing/portable-oscilloscopes