Trend price : 100-150€
Upgraded U-110 keyboard version with larger wavetable and improved DACs.
Overview
(weight: 10 Kg) 61 velocity keys with aftertouch. The main panel features a 24 X 2 display , 42 buttons, 3 sliders and a pitchbender & modulation joystick.
Back panel
connection terminals:
-
headphones
-
main out
- aux out (only dry)
- Midi interface
- Pedal expression input
- Pedal switch input for sound hold
function
- 2 slots for PCM and data cards
Voice
30 digital voices polyphonic based on subtractive synthesis RS PCM Resynthesized Pulse Code Modulation which rebuilds new harmonics using a custom sample interpolation, but it badly lacks a filter
Wavetable
ROM is organized in 2 sound groups:
-
acoustic samples: piano, bell, guitar, string, organ, brass and more
- precalculated digital basic waveforms: pulse, saw and generated harmonics
Edit
lowest level is a tone which is composed by either 1 or 2 samples out of 128 tones available (drum is apart) with no possible edit. The upper level is the timbre composed by a single tone, finally 6 timbres make a patch for performance.
Performance
synth manages up to 6 timbres (+ 1 drum part)
LFO
modulates only the amplitude with variable depth, delay time and 9 waveforms: triangle, singe, square, saw (2), trill (2) and random(2)
Envelope
a single 4-stages amplitude EG
Effects
- reverb: 9 presets including hall, delay, room and gate
- chorus:
5 presets including chorus, flanger and delay
Memory
-
64 patches
-
64 performances
-
4 rhythm sets
Maintenance
There are 2 common reported time issues worth to check out:
-
tact switch may need cleanig or direct replacement
- dead keys
Audio demo:
Video Clip:
Review
OK: affordabel / classic digital
NOT : no filter / limited edit / acoustic obsolete
"U20 sounds are now a bit old, but for some reasons, I still know many people really attached to U20. A classic early digital keyboard."
Text , review, special demos copyright polynominal.com / Eric Pochesci