UNI-T UT81B/C for on tour audio diagnostics?

[PeterKeuning]

Hi,

I'm a sound engineer/technician for a couple of bands here in The Netherlands.
Every now and then the occasion arises to go on tour with one of the bands, and I will join them with my PA setup and we'll do some gigs with some offtime in between. All fine and dandy.

Last august I went on a tour when after the 3rd (out of 12) gigs my speaker management unit stopped working on one channel. We did the remaning gigs using the set in mono on the remaining channel, so we managed, but it's not cool. Once I got home I immediately took out the unit and started poking around with a home made audio probe and found that one of the XLR connectors wasn't connected properly, the PCB traces were broken (underneath the connector, so very hard to spot visually).

I wish I had a portable scope with my that moment in order to probe about and see where the audio path stopped. Now i've found the UNI-T UT81B (or C) both afforable and highly usable, as it's not only a scope but a digital multimeter as well (continuity and voltage are both things which are regularly checked while building/breaking PA setups). I absolutely don't care if it's off by 5 or even 10 volts and that the milliamp range isn't as precise as a Fluke, i just want a cheap meter which can do multiple things and doesn't cost me an arm and leg when dropped/run over/forgotten/stolen.

Besides the story above; i've got 2 guitar amps (mosfet, non-tube/valve) which distort in a strange way on certain frequencies, that would be another thing to probe. Nothing terribly exciting, just a 1 KHz signal and probing around to see after which component it startes to distort.

Alright, to make a long story short: Are both the UNI-T UT81B and C suitable for (analog) audio diagnostics? And if yes, is the 8 MHz difference in bandwidth between the B and C models worth the extra 40 euros?

[Lightages]

If all you want is a sanity check for signals, then the UT81B should be enough. If you want to do qualitative measurements on the signals then you need to look at something a bit more like a scope and less like a multimeter. I have not used this, but t looks more useful as a low bandwidth handheld scope:
 https://www.eevblog.com/forum/testgear/has-this-been-discussed-before-a-'decent'-portable-oscope-for-$70/msg1302870/#msg1302870
and get a good multimeter to go with it like a BM257S.