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Overview, Features, and Specs

An overview, features, and specs for the M-Audio Hammer 88 USB/MIDI controller keyboard, the basis of the Gracenote Hammer series keyboards, can be reviewed at this link:  

 

M-Audio Hammer 88 product site

Due to product customization, the following important differences should be noted:

  • Number of keys and octaves will vary depending on your product selection

  • The transpose buttons allow for +/- 2 octave shifts.  The full 88-note range of a traditional piano may not be available via the keyboard transpose buttons alone.  Further transposition may be available in your plug-in or DAW.

  • The music stand is no longer functional due to the back housing modifications.  If this is a must-have for you, please contact us.

 

  • Dimensions, weight, and default note ranges will vary depending on your product selection according to the following tables:

Keybed
Length (in)
Width (in)
Height (in)
Weight (lb)
25-key
21.5
11.9
5.0
18
37-key
28.0
11.9
5.0
24
49-key
34.5
11.9
5.0
29
61-key
41.0
11.9
5.0
34
  • Regarding note ranges:  the table below is based on C4, MIDI note #60, as Middle C.

Keybed
Default note range
Hardware transpose range
25-key
C3 to C5
C1 to C7
37-key
C3 to C6
C1 to C8
49-key
C2 to C6
C0 to C8
61-key
C2 to C7
C0 to C9

If you have questions about our keyboards or don't see exactly what you're looking for, please contact us.  We look forward to expanding our product offerings based on your feedback.

© 2026 Gracenote Keyboards. All rights reserved.

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