Doepfer A-154 Sequencer Controller

From €164.74 *
Net price: €142.02

Prices incl. VAT plus shipping costs

Color:

  • 120145
  • 80
All parameters of the A-154 equipped with potentiometers also feature CV inputs with... more
Product information "Doepfer A-154 Sequencer Controller"

The A-154 is an additional module for Doepfer's Eurorack sequencer a-155 and it expands it by a number of very interesting functions like new modes of operation which can be selected by CV, including an one-shop option and even voltage controlled step addressing. A voltage controllable clock generator with variable pulse width is included as well. It's even possible to connect and control two A-155s either in parallel or in series for creating a 16-step sequencer.

All parameters of the A-154 equipped with potentiometers also feature CV inputs with attenuators.

MODE sets the operation mode of the sequencer: forward, backward, pendulum, rando or with step addressing (CV Ctr.). All this either as a repetitive sequence or as a one shot.
In the CV Ctr. mode it's possible to set the first and least step of the sequence with the FIRST and LAST potentiometers and thus to address the steps individually. Voltage control makes it possible, for instance to create a short 3-step sequence and move it within the eight possible steps. Or you shorten temporarily a long sequencer to add a variation.

A clock generator is integrated. Its frequency is determined with CLOCK and the pulse width with PW. The pulse width has an effect on the length of the triggers and gates which are produced by the A-155. The generated clock is available at two outputs for synchronising other modules.

The clock generator is normalized to the Ext.Clock input of the transport controller section. This offers buttons and switching inputs for start, stop and reset as well as the already mentioned clock input.
Per se it's identical to the A-155's transport section but in this case the A-154's section can control two A-155s at the same time! These can run either in parallel as two 8-step sequencers or in series as one 16-step sequencer (a A-150 switch module is required to be able to switch between the CV rows.) which is controlled by the toggle switch "Steps 8 16" or a switching signal at the "1-8 | 9-16" inupt.
If you desire to use the internal transport section(s) ot the A-155(s) again you can easily re-activate it/them by using the toggle switch or a signal in the section "A-154 Master".

External videos:

HE: 3
TE: 22
Depth: 80
Related links to "Doepfer A-154 Sequencer Controller"
"Doepfer A-154 Sequencer Controller"
A-154 auf Doepfers Webseite;http://www.doepfer.de/a154.htm; Bedienungsanleitung (pdf);http://www.doepfer.de/a100_man/A154_anl.pdf; Anleitung: Verbinden des A-154 an den A-155 (pdf);http://www.doepfer.de/pdf/A154_155_Verbindung.pdf
Here is the information available on the brand...... more
Doepfer Musikelektronik GmbH

WIth a long trajectory building synths, MIDI keyboards and designing bespoke devices for music pioneers Kraftwerk, Dieter Doepfer decided to design his own modular synthesizer in 1995 based on existing electrical and mechanical specifications of lab equipment he used during his years at university. The official presentation of the system at 1996 Frankfurt Musikmesse caught everyone by surprise and created lots of interest. After Doepfer published the specifications on his website, many instrument designers and engineers saw the potential of the new Eurorack format. Doepfer continues expanding their catalog of over 200 modules (and counting), operating from their modest offices in the outskirts of Munich.

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