A-155

Doepfer A-155

Features of the analog rows (knobs):

8 potentiometers (knobs)
lower row: Scale (knob), voltage output range 0 ... ~ +6,5V
upper row: 1V/2V/4V (octave range switch for exact VCO control), voltage output ranges 0 ...1.0V / 0 ...2.0V / 0 ...4.0V
Glide time (knob), same as portamento or slew limiter
Glide Control (control input for switching glide on/off)
S&H Control (control input for internal S&H, works like A-148)
Pre Glide/S&H-Out (analog output before S&H and glide unit, especially required when external audio signals are used as inputs of the lower row)
Post Glide/S&H-Out (analog output after S&H and glide unit)
lower row: external inputs for the 8 steps (switched jack sockets), control signals or audio signals may be used as inputs (allowed voltage range -5V...+12V), the knobs of the lower row are working in this case as attenuators

Features of the trigger rows (switches):

4 Trigger/Gate tracks with 2 rows of switches
toggle switches of 1-0-1 type (with middle position), which can be used to send a trigger/gate to the track above or below or to send no trigger/gate (middle position)
3 trigger rows (i.e. short pulse for each step set, pulse width corresponds to the pulse width of the clock/step input signal)
1 gate row (i.e. a high signal is applied during the length of the step set)

Control inputs and buttons:

Specifications

100 mA +12V

50hp

40 mm Depth