Doepfer A-110-1

Standard VCO for Modular System A-100Module A-110-1 (VCO) is a voltage controlled oscillator. The A-110-1 produces frequencies in a range of about 8 octaves, of which four waveforms are available simultaneously: pulse, sawtooth, triangle and sine wave.

The frequency of the VCO is determined by the position of the range switch and tune controller and the control voltages at the CV inputs. Thus, the VCO provides the possibility of frequency modulation. You can set the footage (octave of the fundamental) with the selector switch. The Tune control is used to fine tune the VCO frequency.

In the pulse wave the pulse width can be adjusted manually or by voltage control or modulated (PWM).

  • Width: 10 HP/ 50.5 mm
  • Depth: 55 mm (measured from the rear of the front panel)
  • Power requirements: +90 mA (+12V)/ -20 mA (-12V)
No JavaScript? No Audio Samples! :-(

Audio Examples

 
0:00
  • FM
  • PW
  • PW - Mod
  • PW - Mod - LFO
  • Saw
  • Sine
  • Tri

Further Information

Analog Yes
Digital No
Width 10 TE / HP
variants Doepfer

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25 written ratings Read all reviews
Total
Doepfer A-110 Standard VCO
Blair, 03.11.2013
When I first became interested in modular synthesis I bought one of these, and liked it so much I bought another! The A-110 is probably the cheapest vco available, but delivers a decent audio performance, and offers a wide sound palette. It is saw-wave based, and offers another three wave shapes: sine , pulse and triangle. CV baed modulation of frequency and pulse width is available. According to the manual, the sine and triangle waveforms are not true, but derived from the saw wave. In practice all the waveforms sounded good to me. A pair of A-110's track very well together, and deliver good hard sync and FM results.

Other things I liked about the A-110:
* it was well calibrated on delivery and it achieves stable tuning within 5 minutes.
* At 10HP it is perhaps wider than it needs to be, but the control knobs are easy to use.

Room for improvement:
* The fine tuning range is not enough to tune one A-110 a musical interval above another vco, for instance a 4th or a 5th. I understand that there is a modification that can be made to the circuit board, but I feel the module should come set up this way.
* The A-110 cycles down to 15hz, which is not quite low enough to act as an LFO.

However, for the price this VCO is an absolute bargain. I bought the A-110 as a 'starter' vco, thinking I would sell or trade it when I could afford a more expensive vco. Instead I kept it, and bought another.
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The old one's are the best
Wayne M., 01.09.2013
The A-110 is still the staple VCO of many modular synths. A tried and tested design that never ceases to impress. Ideal for first timers too!
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Show variations of this product
Doepfer A-110-1
(65)
Doepfer A-110-1
to the product
138 €

Standard VCO for Modular System A-100Module A-110-1 (VCO) is a voltage controlled oscillator. The A-110-1 produces frequencies in a range of about 8 octaves, of which four waveforms are available...

  • Analog: Yes
  • Digital: No
  • Module: Yes
  • Width: 10 TE / HP
  • Empty Rack, Or Housing: No
  • Basic System: No
  • variants: Doepfer
  • Accessories: No
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Doepfer A-124 Wasp Filter SE

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  • Width: 8 TE / HP
  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
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Doepfer A-119

External Input / Envelope FollowerModule A-119 is used to integrate external audio signals into the system A-100, and includes the components pre-amplifiers, envelope follower and a comparator. The...

  • Width: 8 TE / HP
  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
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Doepfer A-100 LC1 Low Cost Case
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Case for Eurorack Modules Integrated power supply A-100SSB: +12 V / 380 mA, -12 V / 380 mA, 48 HP version of the A-100LC3, Built-in bus board with 8 module slots, Casing made of raw wood -...

  • System: Eurorack
  • Width: 48 TE / HP
  • Module: No
  • Hight: 3 U
  • Empty Rack, Or Housing: Yes
  • Basic System: No
  • Power Supply: Yes
  • Accessories: No
  • Power Supply Specifications: +12V/380 mA, -12V/380mA, +5V/100mA, +12V und +5V dürfen max 380mA betragen
  • Formfactor: Case
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  • Modul Type: Stereo
  • Module: Yes
  • Empty Rack, Or Housing: No
  • Width: 8 TE / HP
  • Basic System: No
  • Accessories: No
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Passive Multi-Port Distributor 8x Interconnected jacks, Sockets are divided into 2x quadruple groups; but can also be modified to an eight-multiple (soldering bridge on the circuit board), Width:...

  • Width: 2 TE / HP
  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
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Euro Rack Module Dual Sample & Hold, Two separate sample/hold circuits, Euro rack format, Power requirements: +20 mA (+12V) / -20 mA (-12V), Width: 4 HP / 20.0 mm, Depth: 30 mm (measured from the...

  • Width: 4 TE / HP
  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
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Low Frequency Oscillator 5 Different waveforms, Adjustable frequency range, Eurorack format, Width: 8 HP, Depth: 55 mm, Power requirement: +30 mA (+ 12V) / -20 mA (-12V)

  • Width: 8 TE / HP
  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
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Doepfer A-138b

Mixer with Logarithmic Potentiometers Primarily suitable for audio signals, Width: 8 HP, Depth: 35 mm, Power requirements: +10 mA (+12 V) / -10 mA (-12 V)

  • Modul Type: Mono
  • Module: Yes
  • Empty Rack, Or Housing: No
  • Width: 8 TE / HP
  • Basic System: No
  • Accessories: No
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Filter 12 dB Multi-mode filter, in which the circuit of the SEM module is used, Width: 8HP 40.3 mm, Depth: 55 mm (measured from the rear of the front panel), Power requirements: +30 MA (+ 12V) /...

  • Width: 8 TE / HP
  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-160-2 Clock Divider II
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Doepfer A-160-2 Clock Divider II

Frequency divider For clock/trigger/gate signals, Width: 4 TE/ 4 HP / 20 mm

  • Width: 4 TE / HP
  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
138 €
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In stock within 2-3 weeks
In stock within 2-3 weeks

This item is expected back in stock soon and can then be shipped immediately.

Standard Delivery Times
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