My apologies to those thrown off by the "warm and punchy" quip. It was, of course, a joke. The ur-text on warminess and punchiness is Steve Albini's epic 1993 rant The Problem With Music
Recommended reading, even if you are not a fan of the grunge sound that Albini helped create.II. What I Hate about Recording
1. Producers and engineers who use meaningless words to make their clients think they know what’s going on. Words like “Punchy,” “Warm,” “Groove,” “Vibe,” “Feel.” Especially “Punchy” and “Warm.” Every time I hear those words, I want to throttle somebody.