88 note weighted action portable keyboard


Kurzweil K2500x 88 note weighted action keyboard/workstation. Includes stand, bench, sustain pedal, and power cord. Comes in hard case with wheels.

SKU: K2500x Category:


Overview of the K2500
The K2500 has been designed to be a versatile instrument both for performance, and for multitimbral
sequencing and recording. Its Variable Architecture Synthesis Technology lets you
build sounds from realistic instrumental samples and sampled synth waveforms—then modify
the nature of those sounds through a dazzling array of digital signal processing (DSP)
functions. The K2500 also generates its own synth waveforms, which can be combined with the
samples or used on their own. The K2500 packs 8 Megabytes of on-board sound ROM, and you
can load samples from disk into optional sample RAM.
Before we get into explaining Variable Architecture Synthesis, here are a few of the features that
by themselves make the K2500 an impressive stage and studio machine. It’s fully multitimbral—
different programs can be played on each MIDI channel. It’s 48-note polyphonic, for a
full sound no matter how many chords you play. There’s an on-board digital effects processor,
providing up to four simultaneous effects, including realtime effects control, internally or via
In addition to the standard stereo audio output pair, there are eight separate outputs that can be
configured as stereo pairs, or as individual mono outputs. You can also use the separate outputs
as insert points for outboard gear.
The K2500 offers eight SIMM sockets (single, in-line memory modules) so you can add optional
sample RAM, where you can store samples that you’ve loaded from disk. You can add up to
128 megabytes of sample RAM! (Sample RAM is not battery-backed, so RAM samples are
erased from memory when you power down.)
For offline storage, there’s also a floppy drive and two
ports, so you can store files on
floppies or on an external hard disk or load them from a CD-ROM drive. The two SCSI ports
make it easy to chain multiple SCSI devices together. There’s also provision for an internal SCSI
hard disk. You’ll find all this storage potential extremely useful for saving and loading samples,
which can be transferred to and from the K2500 using the standard MIDI sample transfer
format, or the new, faster, parallel SMDI sample transfer format (SCSI Musical Data
Interchange). See the
Reference Guide
for information about MIDI and SMDI sample transfers.
The K2500’s battery-backed RAM will store about 400 of your own programs, or 30,000 notes
recorded in the sequencer. This sequencer (Song mode) lets you play back MIDI type 0
sequences, record and play back your own songs, and record multi-timbral sequences received
via MIDI. For more onboard storage you can add the P/RAM option, which will increase your
battery-backed RAM to about 1250K, enough to store hundreds of additional programs, setups,
songs, and other
The Local Keyboard Channel feature enables you to use the K2500’s tri-zone setups even if
your MIDI controller can transmit on only one channel. The K2500 will also rechannelize
incoming MIDI information and send it to its MIDI Out port, enabling you to control additional
synths on three different channels.
An optional sampling feature is available, allowing you to make your own mono or stereo
samples using analog or digital inputs.
And, of course, there’s the incomparable Kurzweil sound. The K2500 comes to you with 200
preset factory programs (called patches, presets, voices, etc. on other synths), as well as 100
multi-zone performance setups. Play them straight from the box, tweak them in any number of
ways, or develop your own programs from scratch—which brings us back to the powerful
programming capabilities of the K2500

Additional information

Weight80 lbs
Dimensions54.3 × 17.8 × 4.8 in