Millenium SMM 21

This unit works perfectly. Its reliable solid construction and there's nothing left to say. If this is the job you need doing then buy this product!

Does ok on dynamic mics, not capacitor mics, tried swapping stuff round, wires mics, amps, but couldn't get 2 cap mics going together. dynamic mics are ok, no problems.
Mics lose a little brightness, but not too much to correct on the eq, lose a little volume too, but easily corrected on the amp gain knobs.
All told, it's certainly worth the few bucks of cost.
Works great for all line signals.

For the weight and price you can get some other options that will work. The price is good but the weight is not so much. Resistant though.