I have an FT991/A and an Elecraft K3s -- and my QMXs, QMX+.
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The receive on the QMX is clean and clear, with more-than-adequate sensitivity (at least in my signal environment).? So it in some ways competitive with both of the commercial rigs.
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But the receiver on both of the commercial rigs is also much better by some measures: noise blankers, IF shift, built-in attenuator and pre-amp, automatic/manual notch filter, adjustable digital noise reduction, etc.? And the K3 has a fully independent sub-receiver for split operation or synchronous diversity receive from two antennas.
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And as good and clear as the QMX audio is, the K3 has a better audio amplifier with several adjustable features including multiband equalizer and digital audio effects.
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And they have a built-in 100W multiband linear amp, so I don't need to try and cobble together something with switchable lowpass filters.
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So as others have said, they are really not in the same class, and can only be compared on a very small subset of features.
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But if the 'fancy' features are not important to you, the QMX is way more than adequate, it is excellent.? And I love mine, not only for portable operation, but because it is fun to operate something SO TINY that is such an amazing multiband, multimode radio.
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Stan KC7XE
