Trend price : 200€
Dj-oriented machine with step value modulations inspired from analog sequencer.
Company: Roland
Model: EF-303
Class: effect module
Dates: 1999
Country: Japan
Weight: 1,9 Kg
Dimensions: 303 (w) x 235 (h) x 92,5 (d) mm
Technology: digital effect
Synthesis: Virtual Analog
Resolution: 20 bits
Sampling rate: 44 kHz
Algorithms: 16 models
Tempo: 40 to 240 BPM
Sync: Midi clock
Memory: 16 slots
Tuning scale: 21 models
Midi: IN / OUT
PSU: 9VDC
Demo: 1
Video: 1
Review: 1
DOWNLOAD: user manual -
Overview
DESKTOP effect
Main panel features a segments display, 16 sliders, 7 knobs and 30 buttons.
Rear panel terminal connectors:
-
Midi interface
-
RCA stereo out
-
headphones
- mic input
-
line RCA input
Sound
internal DSP resolution works at 20 bits and 44 khz sampling rate.
The EF303 groovebox manages 3 main functions:
- modulator effect processor
- Tb-303 bassline emulator
-
drum machine
Modulator
The 16-steps modulator is especially designed for real-time visual performance.
The principle is simple: the step modulator cyclically changes the effect settings to a specified values and creates moving textures.
Internal tempo 40 to 240 BPM or sync to external Midi clock.
Effects
the machine offers 16 algorithm effects:
- filter : classic cutoff filter
- isolator: boosts or cuts specific frequency ranges within 3 bands
- flanger: short delay metallic effect
- pan delay: echo with panning
- reverb : adds reverberation
- pitch/delay: shift the pitch and adds a time delay
- slicer/pan: tremolo effects with stereo panning variation
- comp: adds compression
- LO-FI: lowers the sampled BIT depth
- ring mod: adds ring modulation
- phaser: phase shifting effect
- voice: formant pitch shifter designed as voice changer, special ROBOT mode for synthetic voice effect
- vo Mod: tracks the incoming signal and triggers the internal synbass synthesizer.
Drum machine
Modelling virtual analog. DSP generates 4 different electro percussions: open/close hihat, snare and bassdrum
TB bassliner
virtual analog emulates the famous bassliner . Some sonic controls including filter cutoff, resonance and slide emulation but no accent "twang".
Memory
16 different effect RAM setups
Review
OK: idea / step sequencer
NOT : RCA / drum and TB / no sequencer out for Midi
"The idea is great, but why only limited to a bunch of standard effects? as an analog sequencer it would have been great! Drums and Tb emulations are average. EF303 is limited but really original and fun"
Text , review, special demos copyright polynominal.com / Eric Pochesci
