Sequential OB-6 vs Sequential Prophet X
| Sequential OB-6 | Sequential Prophet X | |
|---|---|---|
| Key action | Full-sized, semi-weighted, 4-octave (49-key) keyboard with velocity and channel aftertouch | Full-sized, semi-weighted, 5-octave (61-key) keyboard with velocity and channel (mono) aftertouch |
| Aftertouch | yes (channel aftertouch) | yes |
| Polyphony | 6 | 8 |
| Sounds / presets | 1000 | 1024 |
| Bluetooth | No | No |
| USB audio | No | No |
| Weight | 9.5 kg | 10.89 kg |
| Dimensions (W×D×H) | 807 × 323 × 117 mm | 976 × 343 × 109 mm |
| Released | 2016 | 2018 |
| USB to host | yes | yes |
| Discontinued | — | 1 |
| Status | legacy | legacy |
| Keys | 49 | 61 |
| Pedals | Sustain footswitch input, Sequencer start/stop footswitch input, Filter cutoff expression pedal input, Volume expression pedal input | Sustain pedal input, Pedal/CV input (0-5 VDC), Volume pedal/CV input, Sequencer footswitch input |
Which one should you buy?
- Choose the Sequential OB-6 if budget is the priority — it is about $1000 cheaper (approx.).
- Choose the Sequential OB-6 if lighter to carry to gigs and lessons (9.5 kg vs 10.89 kg).
- Choose the Sequential Prophet X if you layer sounds or use the sustain pedal heavily (6 vs 8).
- Choose the Sequential Prophet X if you want more variety of built-in voices (1000 vs 1024).
Full spec sheets: Sequential OB-6 · Sequential Prophet X. Rows with a highlighted background differ.