Good? No. Reliable? No. Power they need? They'll make sound out of milliwatts. I have a M103A, which is this tiny amp of the same make an model. I made the mistake of letting two of the speaker leads touch momentarily, it shorted both channels immediately. Not to mention at 13.5v it wouldn't make enough power to blow a pair of headphones.
Just my $0.02, I doubt just because it's larger and rated higher you'll get better out of that model.