Doepfer A-110-4

Quadrature ThruZero VCO

 152,55For European customers, please select your country to view the correct price including vat

Arriving shortly
Contact us to verify delivery times

- +
Add to Wishlist

Arriving shortly
Contact us to verify delivery times

This analog VCO is well versed in the art of deep and beautiful thru-zero frequency modulation, allowing the frequency to stop when CVs with 0V are applied and even to go backwards when modulated with negative CVs.
The term “quadrature” refers to simultaneously available sine and cosine waves at individual outputs. The VCO is sine based i.e. no waveshaping is used to derive the sine; for that reason the sound is really clear and shows a minimum of distortion and overtones.
The module has two control sections:
The exponential section consists of the XTune control, the 1V/Oct input and the XFM input with the corresponding attenuator XFM.
The exponential control voltage is the sum of these three voltages. The linear section consists of the LTune control and the LFM input with the corresponding attenuator LFM. The linear control voltage is the sum of these two voltages.
The main advantage of the A-110-4 compared to other Thru Zero VCOs is that the design uses a sine/cosine core. The sine/cosine waves are not derived from other waveforms (e.g. sawtooth or triangle) by means of waveshaping. Rather the sine and cosine waves are the core of the VCO which results in very pure waves with a minimum of distortion and overtones.
With it’s both control possibilities, linear and exponential, as well as it’s thru-zero ability, the VCO is perfectly suited for all types of FM applications.
inputs: 1V/oct, exponential FM (XFM), linear FM (LFM)
outputs: sine, cosine



60 mm


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Return and restocking option is available for private customers only.
We will issue a refund/credit if you are not satisfied with your purchase and notify us within 10 days of product receipt.
It must be returned in the original packaging and in saleable condition and must be returned freight prepaid.
Return and restocking rights are not applicable for Audio/Video software products.
Shipping and handling charges to and from are not refundable.

Find out more in our departments

Start typing and press Enter to search

Shopping Cart