Alesis Fusion is a music production workstation produced by Alesis introduced in early 2005. It uses four different types of synthesis: sample and synthesis, virtual analog, FM and physical modeling. It includes sampling capability through analog inputs and importing audio samples from a computer or memory card.^[1]

This article relies excessively on references to primary sources. (June 2011)

Quick Facts Manufacturer, Dates ...

Alesis Fusion 6HD/8HD
Alesis Fusion 6HD
Manufacturer	Alesis
Dates	2005 - 2008
Technical specifications
Polyphony	Dynamic processor allocation varies depending on the complexity of the program.
Timbrality	16 parts in Mix mode; 32 Parts in Song mode
LFO	8 per voice
Synthesis type	Sample Playback, Virtual Analog, FM and Physical Modeling
Filter	26 filter types in most synthesis types provided
Aftertouch expression	Yes
Velocity expression	Yes
Storage memory	64MB×2 - Expandable up to 192MB×2, for a total of 384MB via the E3 Memory Upgrade
Effects	80 + 3-band parametric EQ
Input/output
Keyboard	6HD - 61 note semi weighted; 8HD - 88 note fully weighted
External control	USB for file exchange only. MIDI in, out, thru

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The workstation is available in two models. The Fusion 6HD is a sixty-one note semi-weighted keyboard workstation.^[2][3] The Fusion 8HD is an eighty-eight note weighted keyboard workstation.^[2][4] The two models are identical aside from the keyboard type.^[5] It competes with the Korg Triton, the Yamaha Motif and the Roland Fantom-X.