And I assure you, a Magnepan, either a .7 or a 1.7 or ANY Magnepan (and these models are far under $10k) don’t have an iota of distortion in the bass.
I’ve owned both the 1.7is and .7s.
I’ve also auditioned the 3 and 20 series Maggies. They have better bass than most pistonic-cone speakers, especially when driven with high power, massive current reserve amps. That said, I’ve encountered quite a few speakers that I feel have better controlled bass with more realistic definition—less distortion I would say. For example, Børresen X series and Philharmonic BMR Towers both have considerably better defined bass than did my recently departed .7s. Those speakers are 5X and 2.5X the price of the .7s respectively, so it’s not terribly surprising that they’d have better bass.
Some other aforementioned speakers also have subjectively faster bass than the Maggies, though nothing I’ve heard under $15K/pair begins to match the Børresens.