Maybe you missed the specs for your Sony. I had similar, (smaller and portable) and was indeed quiet and sensitive.
There is more to it than just that. Signal to noise ratio is the first thing I look at and next up is selectivity.
Dynamic range. Get into 80 Dbm, and hard to beat.(-135Dbm signal detection)
No radio is any better than the antenna you connect to it. you gotta get that signal and pass it to the receiver.
My $3000 receiver was a piece of junk with a 10 foot piece of wire, but on a T3FD, "WOW"
I have been looking at the Belka DSP in place of the Malahit. they both sprout some impressive specs.
Modern radio, it is all about the DSP. That does all the filtering and decoding. Teamed with a well engineered front end,
Some audio processing, now you have a good radio. Toss in some quality with that.
Cheers