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1.SWEEPがVCF とVCOにかかっていたのをVCOだけにかかるようにしています。

2. TRIGGER IN は3.5mm ジャック

3. TRIGGER IN にプラグを差し込んでも内部トリガーがオフになりません。外部トリガーで操作しながら本体を叩いて反応させることができます。

4. FINEの調整範囲をより細かい音程を設定できるように変更




SWEEPはとても強くかかるように設定していますのでCOARSE と連動して調整してください。

SUSUTAIN 音の立ち上がりからの減衰時間の設定

SENSITIVITY  本体をたたくか外部トリガーの感度の調節です。

LFO.F はフィルターへ、LFO.OはオシレーターへのLFOのかかり具合を調節します。

COARSE 音程の調節








Changes from VDR-1.


1.SWEEP was applied to the VCF and VCO, but is now applied only to the VCO.


2.TRIGGER IN is now a 3.5 mm jack.


3. plugging in the TRIGGER IN does not switch off the internal trigger. You can tap on the unit to make it react while operating with the external trigger.


4. the FINE adjustment range has been changed to allow finer pitch settings

This is a synth drum with a self-oscillating VCF.

It is equipped with a wideband oscillator and has a strong SWEEP effect.


You can create various tones by tapping on the body or with an external trigger (sequencer or piezo).


The oscillator has a thicker sound from highs to lows, and the waveform can be selected as TRIANGLE or SAWTOOTH.


SWEEP is set to be applied very strongly, so adjust it in conjunction with COARSE.


SUSUTAIN Setting of the decay time from the onset of sound


SENSITIVITY TRIGGER  is to adjust the input sensitivity of the SENSITIVITY TRIGGER and internal trigger.


LFO.F controls the amount of LFO applied to the filter and LFO.

LFO.O controls the amount of LFO applied to the oscillator.


FINE is a finer pitch control for the oscillator than COARSE.


The RESONANCE oscillates at maximum and the pitch can be changed with the CUT OFF knob.

It can be powered by either a center minus 9V DC or 9V battery.



self-oscillate VCF with CUT OFF and RESONANCE

VCO  triangle - sawtooth waveform

LFO.F    LFO level for VCF

LFO.O    LFO level for VCO

CV IN.F  cvin for  VCF

CV IN.O  cvin for VCO

SENS.     sensitivity for trigger to synth-drum




FORM  waveform of LFO

RATE  rate of LFO

NOISE   level to VCO


runs on DC9V negative center or a 9V battery.

Demo video of VDR-1c will be up soon.


29000 JPY


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