https://proaudioaccessories.com Sun, 24 May 2026 18:43:41 +0000 en-US hourly 1 https://wordpress.org/?v=4.1.1 https://proaudioaccessories.com/2023/05/dannysound-mml-multimode-ladder-filter-eurorack-new-perfect-circuit/ https://proaudioaccessories.com/2023/05/dannysound-mml-multimode-ladder-filter-eurorack-new-perfect-circuit/#comments Thu, 18 May 2023 17:49:38 +0000 https://proaudioaccessories.com/2023/05/dannysound-mml-multimode-ladder-filter-eurorack-new-perfect-circuit/





The updated’skiff friendly’ design of the MML Filter now features bipolar’attenu-verters’ for the CV controls as well as an all new RED MODE! This new mode activates a feedback distortion circuit capable of actually changing the pitch of the notes coming in to the filter in a musical way that adds instant variety to acid basslines, creates weird and strange alterations to drones or adds some nice overdriven distortion to whatever goes into it! The Multi-Mode Ladder (MML) Filter is based on the classic transistor ladder low pass filter by Dr. This filter updates the classic 4-pole ladder design to provide Band Pass and High Pass filter responses as well as the traditional Low Pass filter. There are 2 bipolar controls with attenu-verters for the cut-off frequency plus a CV input for the resonance. The core of the circuit features a fully discrete transistor design with an op-amp buffered output, this allows soft saturation of the input signal to get the classic overdriven tones of the ladder filter. A bass compensation circuit has been included to retain the bass response in Low Pass mode when the resonance is increased. The bass compensation also helps to improve the response of the High Pass filter. The RED MODE is activated/de-activated by holding the MODE BUTTON for 0.3s. In this mode the filter cut-off, input volume and resonance all interact and the effect is to produce alterations to the incoming frequencies. The pitches of the audio coming into the filter also affect the alterations as well selecting between Low Pass, Band Pass and High Pass filter modes whilst in red mode. We are authorized dealers for a number of great companies that back their products with standard warranties. We want to make sure that you don’t get stuck with a lemon and will either replace or have the unit repaired by an authorized service center on our dime. All gear is tested prior to listing for sale. Any known issues will be mentioned in the item description. You will have 14 days from receipt of the item to test and make sure that everything meets your expectations. We are happy to assist! We insure every package for the full amount. THERE ARE NO EXCEPTIONS! If you experience a problem with a unit. Attempt to open or repair the unit yourself. Please send us a detailed description of the problem you are experiencing and we will have a team member contact you as soon as possible. We are not responsible for unit damaged due to use of improper voltage. Please make sure to double check voltage compatibility and use a proper voltage converter when necessary. We are here to help, so if you don’t get ahold of us leave a message and we’ll be back with you as soon as possible. This item is in the category “Musical Instruments & Gear\Pro Audio Equipment\Synthesizers”. The seller is “perfect_circuit_audio” and is located in this country: US. This item can be shipped to United States, all countries in Europe, all countries in continental Asia, Canada, Australia.

• MPN: MMLMULTIMODELADDERFILTER
• Brand: Dannysound
• Type: Modular Synthesizer

]]> https://proaudioaccessories.com/2023/05/dannysound-mml-multimode-ladder-filter-eurorack-new-perfect-circuit/feed/ 0 https://proaudioaccessories.com/2022/02/erica-synths-black-multimode-vcf-3320-based-10hp-eurorack-module/ https://proaudioaccessories.com/2022/02/erica-synths-black-multimode-vcf-3320-based-10hp-eurorack-module/#comments Fri, 25 Feb 2022 05:12:28 +0000 https://proaudioaccessories.com/2022/02/erica-synths-black-multimode-vcf-3320-based-10hp-eurorack-module/








Erica Synths Multimode VCF Filter Eurorack module. 3320-based design with voltage controlled cutoff frequency and resonance. The module is brand new, freshly built using the highest quality components and has never been used in any eurorack enclosure before. Fully calibrated and tested. Assembled by an electronics engineer with ten years of experience. Only available as DIY. 1x Erica Synths Multimode VCF 10HP Eurorack module. Eurorack Flat Ribbon Power Cable Doepfer Style 10 pin to 16 pin. 2x Befaco M3 Knurlies. Multimode VCF has simultaneous HP, BP and LP outputs, CV control over cutoff and resonance for serious modular patches. The core of the VCF is highly stable, custom multimode VCF chip AS3320. Multimode VCF IC AS3320. Simultaneous HP, BP and LP outputs. CV control over cutoff and resonance. Cutoff CV level attenuverter. 36 mA + 12V, 36 mA -12V. Protection on reversed power supply Skiff friendly design. The parcel can be tracked all over the world. The anti-static bubble wrap for the module packing. Solid double box (box in a box). Any questions at all, please do not hesitate to get in touch. More Eurorack Modules for sale on my other listings. This item is in the category “Musical Instruments & Gear\Pro Audio Equipment\Synthesizers”. The seller is “lenteun” and is located in this country: LV. This item can be shipped worldwide.

• Model: Multimode VCF
• Country/Region of Manufacture: Unknown
• Input/Output Ports: CV In
• Analog/Digital: Analog
• Type: Modular Synthesizer
• Features: Filter, VCF, Multimode VCF, 3320-based, CEM FILTER, CEM 3320
• Type of Keys: Synth
• Brand: Erica Synths
• Pedal Inputs: 1

]]> https://proaudioaccessories.com/2022/02/erica-synths-black-multimode-vcf-3320-based-10hp-eurorack-module/feed/ 0 https://proaudioaccessories.com/2022/01/benjolin-eurorack-dual-oscillator-multimode-filter-aleatoric-chaos-module/ https://proaudioaccessories.com/2022/01/benjolin-eurorack-dual-oscillator-multimode-filter-aleatoric-chaos-module/#comments Sun, 30 Jan 2022 01:15:38 +0000 https://proaudioaccessories.com/2022/01/benjolin-eurorack-dual-oscillator-multimode-filter-aleatoric-chaos-module/


The Benjolin is a multifunction synthesizer designed by Rob Hordijk. The module consists of four separate function blocks: two VCOs, a state variable filter and an additional circuit, invented by Hordijk himself, called a rungler. This particular arrangement emerged from Hordijk’s efforts to design a synthesizer that was, as he puts it, “bent by design”. As such, the module functions according to principles of chaos theory, where short to long sputtering patterns spontaneously transform themselves, at times, gradually, at others, quite suddenly, morphing into new pattern doublings and bifurcations. The chaotic character of the Benjolin is anchored in Hordijk’s rungler circuit. In essence, the rungler is an 8-step shift register that takes its data input from one oscillator (OSC A) and its clock input from the other (OSC B). The output of the shift register is then fed into a primitive, digital-to-analogue converter, creating a stepped voltage pattern of variable length and depth, what Hordijk terms a “stepped havoc wave”. This rungler wave is then wired back into the oscillators, via the attenuator knobs (Run A and Run B), creating the complex interference system that lends the Benjolin its unique, aleatoric character. The inclusion of a voltage-controlled filter expands these possibilities further into the audio realm. Its design includes Hordijk’s signature, Z-plane modulation circuitry, which produces all-harmonic distortion. This gives the filter that kind of warm, organic character, reminiscent of classic tube amplifiers. This is most palpable when the resonance of the filter is turned to the maximum, with both oscillators running in the audio range. The filter’s input comprises a mix of a PWM wave (derived from the triangle waves of each oscillator) and the rungler signal itself. As with each of the oscillators, a rungler attenuator (RUN F) allows modulation of the filter as well. To round things out, CV inputs for both the oscillators and filter are normalized, each via their respective attenuators. This allows for cross modulation between the oscillators and a “sweeping” effect for the filter, hitched to Triangle B. NOTE: As with all Benjolins main output is at line level and all other outputs are at modular level. So if you want to further process this in the modular realm something like a preamp module will help (i use one channel of my MI Veils 2020 for this as it has 20db gain). Some people modify the output to be at modular level but then reported problems so I never did any mods and just use an extra module. I usually send the output to my computer for reverb anyway. This item is in the category “Musical Instruments & DJ Equipment\Pro Audio Equipment\Synthesisers & Sound Modules”. The seller is “thorosm” and is located in this country: GB. This item can be shipped to United Kingdom.

• Model: Benjolin
• Analogue/Digital: Analogue
• Input/Output Ports: CV In, CV Out, Gate In, Gate Out, Trig In
• Brand: Eurorack
• Type: Modular Synthesiser

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