Combo, Head and Cabinet

Amps come in two formats, and the difference is mainly about transport, flexibility and volume class — not quality as such.

Combo — Amp and speaker in one enclosure. Compact, instantly playable, one unit to carry. The most practical form for practice, small gigs and the living room. Most beginner amps are combos. Limit: speaker complement and size are fixed.

Head + Cabinet ("Stack") — The amp (head) is separate from the speaker (cabinet). That lets you combine amp and cab freely — the same head through different cabs sounds audibly different. The classic "wall of sound" build (full stack = head on two cabs) is mostly show today; in the studio and on small stages a half stack or less is plenty.

Practical framing — The combo almost always wins on convenience; the stack wins on flexibility and maximum volume. For the vast majority of players — practice, recording, small gigs — a combo is the more sensible choice, and the look of a big stack says nothing about the sound. Anyone buying amp and cab separately should know the cab (see "Speakers") has a large share in the end result.

No format is superior — it is a question of transport, volume needs and how much combination freedom you actually use.