Amp and extension lead

Don't see why it wouldn't be. My amp is plugged into an extension

what are the ohms of both cabs?

Impedance impedance impedance.... even a solid state amp may have issues producing its full output rating into a mismatched impedance...

I think hes on about an extension cable with like 4 plugs on it rather than a cab

what, like splitting your signal from 1 unbalanced jack to 2 without an ABY, junction splitter or stereo effects unit? Pete townshend style? Harmless to the amps, but it halves the output from your guitar to each amp and the amps may not be in phase so the sound could cancel and get very thin and quiet instead of louder... not to mention hum from ground loops. But you can try it with any 2 amps.

no, this http://www.diy.com/departments/masterplug-4-socket-10-a-internal-extension-lead-8m-white/176311_BQ.prd

In school i was always told there is no such thing as a stupid question.

As long as your amp and the other devices on tje line don't exceed the current limits of the power strip, wall outlet or breaker/fuse at the mains box? Fine. Even a 15 watt tube amp sharing a line with your microwave, stere and tv is unlikely to trip a breaker...

A solid state amp will be fine.

Teachers talka lot of smack to us when we're kids. Lies

I'm running my amp, two power supplies a tv and xbox one off the same extension lead with no problems. Only time I've had any problem with one was when my fiancee spilt vodka all over it.

As far as I know there is no harm running multiple things off a extenion unless you are plugging an extension into an extention

I hope she didn't spill that vodka BEFORE your son was born! j/k

I used to run a superlead, a showman, a Yamaha spx90, a radial ABY and a giant solid state stereo power amp off of 1 furman plugged into a single outlet at my band's rehearsal space, which was an old storefront in a sketchy neighborhood. And also did the same trick when our space was in the very old house me and the bassist rented.... bad electrical there, no worries though. And I was pulling some SERIOUS amperage.