Hammond SK Pro 73vsHammond SK1-73
Summary
Hammond SK Pro 73 and Hammond SK1-73: 2 Hammond multi-function keyboards compared side by side. They differ on 11 of 15 compared specifications.
| 2 items | Hammond SK Pro 73CurrentView details → | Hammond SK1-73LegacyView details → |
|---|---|---|
| General | ||
| Manufacturer | Hammond | Hammond |
| Status | Current | Legacy |
| Released | 2021 | — |
| Keyboard | ||
| Keys | 73 | 73 |
| Key action | Waterfall | Waterfall |
| Keybed | Semi-weighted square-front waterfall, velocity-sensitive, virtual nine-contact (F1 to F7) | 73 waterfall keys, velocity-sensitive (F0 to F6) |
| Sounds | ||
| Sections | Organ, Piano, Electric piano, Synth, Sample playback | Organ, Piano, Electric piano, Sample playback |
| Drawbars | Physical | Physical |
| Sound engine | MTW1 organ, sampled piano/ensemble engine and analogue-modelling mono synth | VASE III organ plus VASE III Extra Voice section |
| Organ models | Hammond MTW1 modelled tonewheels from the XK-5 (A-100, B-3, C-3, Mellow), Vx, Farf and Ace transistor organs, classical and theatre pipe | Hammond VASE III digital tonewheels (B-Type1, B-Type2, Mellow), Vx and Farf transistor organs, pipe organ |
| Polyphony | Organ 61, piano/ensemble 128, mono synth monophonic | Organ 61 (manuals), 8 (pedal); Extra Voice up to 63 |
| Connections | ||
| Outputs | 1/4-inch unbalanced, Headphones, Leslie 11-pin | 1/4-inch unbalanced, Headphones, Leslie 8-pin |
| MIDI ports | DIN in, DIN out, USB | DIN in, DIN out |
| Pedal inputs | Sustain, Expression, Rotor speed, Footswitch | Sustain, Expression, Footswitch |
| Features | ||
| Features | Nine physical drawbars, Virtual multi-contact keying, Digital Leslie, Four sound engines, Pitch and mod wheels, Individual and organ pedal outputs, Seamless sound switching, Colour display, Internal AC power | Nine physical drawbars, Digital Leslie, Extra Voice section, Music player (WAV/MP3 from USB), External power adaptor |
| Size & weight | ||
| Colours | Black | Black |
| Dimensions (W × D × H) | 1170 × 322 × 109 mm | 1124 × 303 × 99 mm |
| Weight | 11 kg | 9.3 kg |
Key differences
- Keybed: SK Pro 73 – Semi-weighted square-front waterfall, velocity-sensitive, virtual nine-contact (F1 to F7) SK1-73 – 73 waterfall keys, velocity-sensitive (F0 to F6)
- Sound engine: SK Pro 73 – MTW1 organ, sampled piano/ensemble engine and analogue-modelling mono synth SK1-73 – VASE III organ plus VASE III Extra Voice section
- Organ models: SK Pro 73 – Hammond MTW1 modelled tonewheels from the XK-5 (A-100, B-3, C-3, Mellow), Vx, Farf and Ace transistor organs, classical and theatre pipe SK1-73 – Hammond VASE III digital tonewheels (B-Type1, B-Type2, Mellow), Vx and Farf transistor organs, pipe organ
- Polyphony: SK Pro 73 – Organ 61, piano/ensemble 128, mono synth monophonic SK1-73 – Organ 61 (manuals), 8 (pedal); Extra Voice up to 63
- Dimensions (W × D × H): SK Pro 73 – 1170 × 322 × 109 mm SK1-73 – 1124 × 303 × 99 mm
- Weight: SK Pro 73 – 11 kg SK1-73 – 9.3 kg
Both are the same on keys (73), key action (Waterfall) and drawbars (Physical).

