Frequently Asked Questions
How long is the Cirklon waiting list?
The current waiting time to buy a Cirklon is around 2 years after joining the list, however availabilty of parts has improved in the past couple of years and we are managing to reduce the waiting time.
Updates on which date we’ve reached on the list can be found on the Wait List thread on our user forum.
To join our waiting list, please complete the form on the Cirklon product page.
There’s no obligation to buy when we reach your position on the waiting list if you decide not to go ahead at that time.
How do I pay for my Cirklon?
A deposit payment is not required when you join the waiting list.
We will email you when we’ve reached your position on the waiting list with a link to place a “pre-approved order”
We accept payment via card, PayPal or bank transfer.
We usually ship your order around a week after we receive cleared payment.
How do I change Cirklon’s internal battery?
Battery type CR2032/CR2450 (since 2024)
If you have an original Cirklon model # 01 - #109 this video shows how to change the battery:
https://www.youtube.com/watch?v=KR_wMGqhzww&t=0s
If you have an original Cirklon model #110 – #1353 this video shows how to change the battery:
https://www.youtube.com/watch?v=qcuUQbA2LRo
If you have a Cirklon2 model this video shows how to change the battery:
What's the difference between the basic model Cirklon and the CVIO model Cirklon?
The basic model Cirklon2 (1,750 Euros excluding VAT) can connect to any MIDI compatible instruments with standard DIN sockets. It also features a USB-MIDI slave port for connection to PC, Mac or USB-MIDI host devices, and a DIN Sync output port for control of suitable equipment.
The CVIO model Cirklon2 (2,000 Euros excluding VAT) extends these capabilities to include control of analogue synthesisers via multiple CV (control voltage) and gate outputs. There are 16 high-resolution CV outputs and 8 gate outputs via a 25 way connector on the rear panel.
The CV outputs support V/octave and Hz/V modes plus portamento/glide and micro-tuning options. The gate outputs can be configured in 5V v-gate or S-trig modes.
A break-out box (BOB) is required to connect analogue equipment to the CVIO model Cirklon. Our BOBs provide sockets for each of the 24 outputs carried by the analogue connector.
Can the basic model Cirklon be upgraded to the CVIO model?
A basic model Cirklon can be upgraded by fitting a CV board inside the Cirklon. The CV board can be purchased via our online shop.
Fitting the CV board yourself is quite straight-forward if you have basic technical skills - no soldering is required.
This tutorial video demonstrates the installation procedure.
What type of breakout boxes do you sell?
Our breakout boxes (BOBs) are available with either 3.5mm or quarter-inch (6.35mm) sockets, in desktop or rackmount form.
We also offer a 14HP Eurorack BOB module with 3.5mm sockets.
On rackmount BOBs the analogue bus socket can be fitted to either the front or back of the BOB, with a blanking plate in the opposite position.
A cable to connect the BOB to the Cirklon should be purchased separately from us.
2 metre, 3 metre or 5 metre round BOB cables are available .
We also sell a 50cm flat ribbon BOB cable which is ideal for when the Cirklon and BOB are rackmounted together.
If you want to make your own break-out cable here’s the pin-out diagram:
How do I change the Cirklon from desktop to rackmount set-up?
This video demonstrates the process.
Can you recommend any technicians who carry out work on Cirklon?
Audiocircus Ltd
6 Blackstone St
Blackstone
Henfield
BN5 9TH
UK
Contact: Rob Hukin
rob@audiocircus.co.uk
https://audiocircus.co.uk/
Synths When
74 Wade Ave
Toronto, ON
Canada
M6H 1P6
Contact: Jay Lemak
repairs@synthswhen.com
www.synthswhen.com
Tel: 647.300.5502
Low-Gain Electronics
Logan Erickson
United States
Contact: Logan Erickson
lowgainelectronics@gmail.com
www.low-gain.com
What shipping method do you use?
We use either Deutsche Post or UPS depending on shipment weight and value.
What power supply does Cirklon use?
Cirklon is supplied with a world-wide PSU, including interchangeable connector plates for UK, US, European and Australian outlets.
Input voltage is auto-switching, from 90V to 264V, 47Hz to 63Hz.
How do I install a firmware update onto my Cirklon?
You can download the latest Cirklon firmware update from our forum.
Once the file has been downloaded, the update can be installed via SD card or MIDI sysex transfer.
This tutorial made by Cirklon owner Charlie Norton shows the process of backing up and updating your Cirklon.