Nathan Sheldon
Keys 76 keys, semi-weighted (synth action)
Key-on and key-off velocity sensitive
Channel aftertouch
Polyphony 64 voices (each patch can use up to 4 voices per note)
Multi-timbrality 16 parts (part 10 reserved for rhythm)
Effects 1 EFX processor (40 insert effects)
1 chorus processor
1 reverb/delay processor (8 types)
Expansion 4 slots for Roland SR-JV80 series wave expansion boards (19 were made)
Compatibility General MIDI, though with only 2 GM drum kits rather than the standard 8
Preset memory 512 patches (4 banks of 128)
64 performances (2 banks of 32)
8 rhythm kits (4 banks of 2)
User memory 128 patches
32 performances
2 rhythm kits
Floppy drive 3.5-inch, DOS-formatted 2DD (720 KB) and 2HD (1.44 MB)
Up to 99 songs per disk
Reads MRC Pro songs (.SVQ), Standard MIDI Files type 0 and 1 (.MID) and S-MRC songs from the MC sequencers
XP data (.SVD), Chain Play (.SVC), groove templates (.SVT) and the invisible song list (.SV)
Sequencer capacity 1 song
470 KB for music data (about 60,000 notes)
272 KB for System Exclusive data
9,998 measures maximum
Sequencer 16 phrase tracks, 1 pattern track (up to 100 patterns), tempo and beat tracks
16 channels, assignable to any tracks
96 PPQN resolution
Real-time and step recording; 64 simultaneous notes in and out
Tempo 10–250 BPM (5–500 BPM with playback tempo)
Grid, shuffle and groove quantize (71 preset and 16 user groove templates); grid and shuffle record quantize
Quick Play: stream songs straight from floppy
Chain Play: play a saved list of songs from floppy in sequence
Arpeggiator with 33 preset styles
RPS (Realtime Phrase Sequencing): trigger any pattern from a single key
Sound engine 4 tones per patch
2 LFOs per tone (pitch, filter cutoff, level and pan)
1 filter per tone: low-pass, high-pass, band-pass or peaking, with resonance
ADDSR envelopes per tone for filter cutoff, level and pitch
7 velocity curves per envelope
Controllers 2 assignable system sliders
Spring-loaded pitch/modulation joystick (can be calibrated manually)
4 Sound Palette sliders for patch timbre (or selected MIDI CCs in Performance mode)
4 control pedal inputs and 1 hold pedal input, all with reversible polarity
Jacks Headphones (stereo ¼-inch)
MIX outputs L/Mono and R (¼-inch)
DIRECT outputs L/Mono and R, without effects (¼-inch)
Click out (sequencer metronome) with its own level trim
MIDI In, Out and Thru
Hold pedal and 4 control pedal jacks
Display 320 × 80 pixel backlit LCD
Weight 12.9 kg (28 lb 8 oz)
Power consumption 20 W
Dimensions 1238 × 349 × 107 mm (W × D × H)
48¾ × 13¾ × 4¼ inches
Included Quick Start guide and Owner’s Manual
XP-80 demo disk
XP-50/80 Dance Kit disk

Demo disk data is on the XP-80 overview.