The Roland D-70 is a 76-key multi-timbral synthesizer developed and released by the Japanese musical instrument manufacturer Roland Corporation in 1990, featuring Advanced LA Synthesis technology that integrates sampled waveforms with linear arithmetic synthesis and time-variant filters (TVF) for sound generation.
This instrument builds on the linear arithmetic (LA) synthesis pioneered in Roland's earlier D-50 model, combining high-quality digital samples for basic waveforms with subtractive synthesis elements, including dynamic TVF filters modeled after analog circuits, to produce a wide range of expressive tones from orchestral instruments to electronic pads and percussion. The D-70 includes a sample playback engine supporting 5-part multitimbrality plus a dedicated rhythm part, onboard digital effects such as reverb and chorus, and a dedicated percussion sound set, enabling versatile performance and sequencing capabilities in both studio and live settings.

This keyboard was 100% serviced removing the deadly RED glue, added new keypads, upgraded keyboard firmware version to v1.19, CPU upgraded to version F chip. All keys are working as well as touching keys. A brand-new blue display was upgraded. Every function on this keyboard is OK and working properly.

Keyboard has some scratches here and there by the age and usage.

KEYBOARD:
76 note (with velocity and channel aftertouch)

SOUND SOURCE:
Advanced LA Synth
TVF (Time Variant Filters) (Low Pass, High Pass, Band Pass)
Maximum Simultaneous notes: 30 voices

INTERNAL MEMORY:
System Setup: 1
User set: 10
Performance: 64
Patch: 128
Tone: 128
Rhythm Setup (76 notes: E1-G7): 1
Original Tone: 119

RAM CARD (M-256E)
System Setup: 1
User Set: 10
Performance: 64
Patch: 128
Tone: 128
Rhythm Setup (76 notes: E1-G7): 1

FRONT PANEL:
Bender / Modulation Lever
Master Volume Slider
C1 Slider
Brightness Slider
Play Button
Edit Button
PCM Card Button
Solo Button
Portamento Button
Release Button
Cuttoff Button
Resonance Button
Attack Button
Level Button
Pan Button
Tuning Button
Tone Palette Sliders (1 - 4)
Tone / Zone Select Buttons (1 - 4)
Tone Display Button
MIDI OUT Button
EFFECT / CTRL Button
Part Button
User Button
Function Buttons (F1 - F5)
Exit Button
Cursor Buttons
DEC Button
INC Button
Performance Button
Patch Button
Tone Button
A / B Button
INT / CARD Button
Command Button
Write Button
Enter Button
Bank Buttons (1 - 8)
Number Buttons (1 - 8)
Value Dial

REAR PANEL:
Power Switch
RAM Card Slot
Protect Switch
Contrast Knob
MIDI Connectors (IN, OUT, THRU)
Control Input Jacks (Expression Pedal Jack, Pedal Switch Jack, Hold Pedal Jack)
PCM Card Slots (A, B)
Direct Output Jacks (L / R)
Mix Output Jacks (L / R)
Headphone Jack

EXTERNAL DIMENSIONS:
1196 (W) x 310 (D) x 85 (H) mm
47 - 1 / 16' x 12 - 3 / 16' x 3 - 3 / 8' inches

WEIGHT:
12 kg / 26 lb 7 oz

POWER CONSUMPTION:
14W