Hammond B-3 vs A-100
Introduced in 1959, the Hammond A-100 series is the B-3's self-contained twin: the same B-3/C-3 internal layout plus a built-in power amplifier and speakers.^[raw/articles/wikipedia-hammond-organ.md]
Dimensions of comparison
| Dimension | Hammond B-3 (1954–1975) | Hammond A-100 (1959–c.1968) |
|---|---|---|
| Sound generation | Identical tonewheel console: two 61-note manuals, 25-note pedalboard, 12 presets/manual | Identical generator — same organ engine |
| Percussion & vibrato/chorus | Yes | Yes — same features |
| Amplification | Line-level output only; needs an external amp or Leslie (122/147) | Internal tube amplifier + speakers in the cabinet; Leslie can still be added |
| Cabinet | Open console, sits on detachable legs | Home-furniture console ("spinet-style" full cabinet); last two digits of the model number denote style/finish (e.g. A-105 "Tudor styling in light oak or walnut")^[raw/articles/wikipedia-hammond-organ.md] |
| Use case | Stage, studio, church — the touring standard | Living room / chapel; no external rig needed |
| Market today | The most valuable and demanded Hammond | Often much cheaper; favored by home players and studios that want "a B-3 with speakers built in" |
Verdict / synthesis
Electronically the A-100 is a B-3 in a dressed-up cabinet with its own sound system — players get the identical drawbars, percussion, vibrato/chorus and tonewheel character. Practical differences decide the choice: the B-3 (with a Leslie) remains the stage standard because its open console is lighter and rackable for transport, while the A-100 is a one-box solution for the living room or a small studio. On the used market the A-100's lower price makes it the classic "poor man's B-3," and some players even run its internal speakers and a Leslie together for extra body.^[raw/articles/wikipedia-hammond-organ.md]
Related
- hammond-b3 — the reference console
- hammond-organ-company — maker of both
- leslie-speaker — external counterpart to the A-100's built-in sound