M-Audio
M-Audio 9900-40832-00 Keystation 88ES USB MIDI Controller
★★★★★
Experience the Authentic Feel of a Piano in a Portable DesignThe M-Audio Keystation 88es is an 88-key USB MIDI keyboard controller designed for musicians who demand the full range of a piano in a lightweight and portable package. With semi-weighted keys and class-compliant connectivity, it offers...
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.
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Overview
Experience the Authentic Feel of a Piano in a Portable Design
The M-Audio Keystation 88es is an 88-key USB MIDI keyboard controller designed for musicians who demand the full range of a piano in a lightweight and portable package. With semi-weighted keys and class-compliant connectivity, it offers seamless integration with your computer and music software.
- Brand: M-Audio
- Model: 9900-40832-00
- Type: USB MIDI Keyboard Controller
- Number of Keys: 88
- Key Action: Semi-Weighted, Velocity-Sensitive
- Connectivity: USB
- Compatibility: Windows XP, Vista (32 bit), Mac OS X (Class Compliant)
- Power: USB Bus-Powered
- Controllers: Pitch and Modulation Wheels, Slider, Buttons
Key Features
88 velocity-sensitive, semi-weighted keysPitch bend and modulation wheels
Advanced function button for programming
Sustain and expression pedal inputs
Assignable data up/down buttons
Built-in USB MIDI interfaceMIDI out jack routes MIDI signals from keyboard or computer to external devices
Powered via USB or 9V DC adapter (sold separately)Mac OS X and Windows XP class compliant
Specifications
Key Count
88
Key Type
Velocity-sensitive, Semi-weighted
Connectivity
USB MIDI Interface, MIDI Out Jack
Control Wheels
Pitch Bend, Modulation
Pedal Inputs
Sustain, Expression
Power Options
USB, 9V DC Adapter (sold separately)
Compatibility
Mac OS X, Windows XP
Special Features
Advanced Function Button for Programming, Assignable Data Up/Down Buttons
Pros & Cons
👍 Pros
- Features 88 velocity-sensitive, semi-weighted keys, providing a realistic piano feel for expressive playing.
- Includes pitch bend and modulation wheels, allowing for dynamic control over sounds.
- Equipped with an advanced function button for programming, enhancing customization options for musicians.
- Provides sustain and expression pedal inputs, offering additional control for nuanced performances.
- Built-in USB MIDI interface simplifies connection to computers and other MIDI devices without extra hardware.
👎 Cons
- The 9V DC adapter for power is sold separately, requiring an additional purchase for non-USB power.
- Lacks its own internal sounds, functioning solely as a MIDI controller and requiring external sound sources.
- Specific details about the feel of the semi-weighted keys are subjective and may not suit all players.
- The controller lacks integrated speakers, necessitating external amplification or headphones for audio output.
- The "advanced function button for programming" might require some learning for users unfamiliar with MIDI programming.
Frequently Asked Questions
Are the keys on the M-Audio Keystation 88ES weighted like a traditional piano?
The keys on the M-Audio Keystation 88ES are velocity-sensitive and semi-weighted, providing a balance between piano feel and portability.
Does this MIDI controller include built-in sounds or speakers?
No, the Keystation 88ES is a MIDI controller and does not have built-in sounds or speakers; it requires software or external sound modules.
How does the Keystation 88ES connect to a computer?
It features a built-in USB MIDI interface, allowing for direct connection to your computer.
Can I connect sustain and expression pedals to this controller?
Yes, the M-Audio Keystation 88ES includes dedicated inputs for both sustain and expression pedals.
Is a power adapter included with the M-Audio Keystation 88ES?
The 9V DC adapter for power is sold separately; however, the unit can also be powered via USB.
Is the Keystation 88ES compatible with both Mac and Windows operating systems?
Yes, it is class compliant with Mac OS X and Windows XP.
What are the pitch bend and modulation wheels used for on this controller?
The pitch bend and modulation wheels allow you to add expressive control to your sounds, such as bending notes or applying vibrato effects.
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