Seller notes:
Listing is for a single NEW Frequency Central Arley Dynamics in brand new condition for the following piece(s) of equipment: Eurorack Modular. Madisynths is an official Frequency Central dealer. We stand behind these fantastic modules as long time users, with about half of our personal racks consisting of FC synth gear!

This is a GREAT compact ADSR/VCA combo based around the CEM3310 envelope chip to provide a Sequential Pro-One style envelope. Couple that with a VCA that can be patched separately from the ADSR, and you’ve got a really nice combo of tools in just 6 HP of space!

Stock Update:
In stock and ready for same day shipping!

About the Frequency Central Arley Dynamics:
Arley Dynamics takes our super snappy CEMvelope, marries it to a VCA from our More VCAs, and throws in a bunch of extras. the result is a super compact combo to control the dynamics of your system.

The ADSR side of Arley Dynamics is based around the famous AS3310 Curtis clone chip, a classic ADSR which pays homage to the SCI Pro One of the past. It has a couple of handy additions to it’s functionality:
  • As well as Normal output, there’s an Aux output, which can be selected via a jumper on the rear of the module to give out either normal or inverted envelopes
  • The Level CV input can be used to externally control the output level of the ADSR for full dynamic control. Uses include velocity sensitivity, or automated level controls.
The VCA side of Arley Dynamics is OTA based and pays homage to ARP VCAs of the past. Full of warm analogue goodness, it adds some extra functionality:
  • Selectable CV source, either ADSR or Gate
  • Drone feature – handy for when you need a constant output for tuning up, for example.
The Normal output of the ADSR section is normalised to the CV input of the VCA section, you can override this by patching an external signal into the VCA’s CV input. So the ASDR and VCA sections are both fully modular and can be used fully independently within your system.

Product specifications:
  • Depth      35 mm
  • Width    6 HP
  • +12V draw   18 mA
  • -12V draw  18 mA
  • +5V draw    0 mA

Shipping notes:
FAST SHIPPING IS OUR STANDARD SERVICE, WITH SAME DAY SHIPPING & DROP OFF, AND TWO-DAY SHIPPING IS AVAILABLE AS AN UPGRADE ON MOST SHIPPING PROFILES! Saturday afternoon & Sunday sales will be taken to the shipper early on Monday mornings. If you are in the Madison, WI area, a showing can be arranged, and free local pickup is available. In-person cash payment can be arranged to avoid the payment processing fees, but not the Reverb seller fees (those will be reported and the 5% paid to Reverb).


For all small and some medium items, the item will be bubble wrapped and well secured in a strong box. For some medium items (sizable drum machines, table top synths) and all large items (keyboards and rack mount devices), item will be double-wrapped and double boxed.

NOTE: We will combine shipping for parts and small items, and often have more in-stock than what is listed (especially replacement keys). Please message us your requirements for multiple parts needed (where multiple items are available, but only one can be purchased at a time), and we will adjust shipping and/or bulk discounts accordingly.

Madisynths stands by the items that we sell with Reverb's standard used/vintage gear return policy (within 7 days of delivery) as well as the standard new gear return policy (within 14 days of delivery, excluding parts that have been soldered or are otherwise no longer new). Shipping charges to (including actual charges for free shipping items) and from will be deducted from refund on all returns. Very few specific listings have been designated “as described with no returns, mostly items noted as “for parts” or “non-functioning.“

ConditionBrand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.Learn more
  • Arley Dynamics (CEM3310 based ADSR/VCA) for Eurorack Modular
  • Black
  • 2021
Made In
  • United Kingdom

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Waunakee, WI, United States
Joined Reverb:2017

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