The Hammond XK-4 Portable Organ is a premium professional digital organ designed to recreate the legendary sound, response, and playing experience of the classic Hammond B-3.

Built for performing musicians, church organists, gospel players, jazz musicians, and recording artists, the XK-4 combines vintage Hammond character with modern digital technology in a lightweight, portable instrument.

Its primary purpose is to deliver authentic Hammond organ sounds without requiring the size, weight, maintenance, or transportation challenges of a traditional tonewheel organ.

1. Authentic Hammond B-3 sound engine

The centerpiece of the XK-4 is Hammond's Modelled Tone Wheel 2 (MTW2) sound engine.

It recreates the characteristics of the original Hammond tonewheel generator, including subtle imperfections that contribute to the distinctive vintage sound.

Features include:

• Detailed modeling of 91 virtual tonewheels.
• Authentic Hammond B-3-style organ tones.
• Adjustable tonewheel characteristics.
• Vintage tube amplifier modeling.
• Matching transformer simulation.
• Nine-level virtual multi-contact keyboard response.

This gives musicians the ability to create everything from warm jazz organ sounds to aggressive rock and gospel registrations.

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2. Nine real-time drawbars

The XK-4 includes nine drawbars that allow players to shape their organ sound while performing.

The drawbars control different harmonics, allowing you to create:

• Traditional Hammond jazz registrations.
• Full gospel organ sounds.
• Classic blues and soul tones.
• Bright rock organ sounds.
• Thick, powerful church organ textures.

You can adjust the drawbars while playing, just as you would on a traditional Hammond organ.

3. Multiple organ types

Beyond the traditional Hammond tonewheel sound, the XK-4 offers several additional organ models:

• Tonewheel organs.
• Vox-style transistor organs.
• Farfisa-style transistor organs.
• Ace-style combo organ.
• Classical pipe organs.
• Theater pipe organs.

This makes it useful for a wide variety of musical styles.

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4. Digital Leslie rotary speaker

One of the most important features is its built-in Digital Leslie system.

The Leslie effect recreates the sound of rotating speakers traditionally paired with Hammond organs.

It provides:

• Slow rotor (Chorale).
• Fast rotor (Tremolo).
• Adjustable rotary speaker characteristics.
• Three-dimensional swirling modulation.
• Vintage rotary speaker movement and depth.

The XK-4 also has an 11-pin Leslie connection for connecting a compatible external Leslie speaker.

5. Professional keyboard and playing experience

The keyboard features 61 semi-weighted, waterfall-style keys.

The waterfall design makes it easier to perform traditional organ techniques, including glissandos and fast repeated notes.

Other performance controls include:

• Pitch bend wheel.
• Modulation wheel.
• Leslie speed controls.
• Assignable buttons and knobs.
• Expression pedal support.
• Footswitch support.

6. Effects and sound customization

The XK-4 includes a substantial selection of effects:

• Vibrato and chorus.
• Overdrive.
• Reverb.
• Equalization.
• Multi-effects processing.
• Matching transformer simulation.
• Digital Leslie processing.

These effects allow musicians to customize their sound for different venues, recording environments, and musical styles.