ARP 2600 FILTER ADAPTATION - 4012 MODULE

The Tonus VCF is a faithful Eurorack filter adaptation of the early ARP 2600 synthesizers that brandished the highly regarded 4012 filter module. The Tonus VCF is named so in honor of the Tonus ARP logos that adorned the first 2600s.

The ARP 2600 is a beast of an analog synthesizer. Among its filter versions, the 4012 module is regarded as the most desirable.
And for good reason. Borrowing from the Moog transistor ladder design, it was not a direct copy. ARP used different components, used a different buffer circuit, and modified the resonance feedback design. The most recognizable use of the 2600 is the voicing of R2-D2 by Skywalker Sound in the Star Wars movies.

Now the 4012 filter can find a home in your Eurorack. Otherwise you'll need to shell out the big bucks for a real 2600. Or cobble together the wonderful TTSH project kit from PCB boards that are no longer available.

Great care was taken to keep the Tonus VCF design as close to the original as possible including component selection and transistor pair matching. My modules are painstakingly hand-crafted.

FEATURES:
Illuminated Bourns Slider pots - Frequency, Fine Tuning, and Resonance.
Mix together two different input oscillators at the input jacks w/ signal attenuation sliders.
Modulate the filter cutoff with two different input CVs w/ signal attenuation sliders.
There are trim pots accessible from the front for adjusting frequency, offset, and gain.

Should be available Sunday 12/3, offered exclusively in my Reverb store http://www.reverb.com/shop/gstormelectro
https://soundcloud.com/gstormelectro/tonus-vcf-eurorack-module-arp-2600-filter-adaptation
http://youtu.be/3JGQm7r4ku4
http://youtu.be/saHuCNQCg9g

• 43 mA +12V
• 6 mA -12V
• 0 mA 5V
• 39 mm Depth

This Module is an early prototype, a concept in development, or an AI mockup