Bananalogue VCS 2

At 9 HP, it fits a West Coast design into a narrow strip of Eurorack space, and people argue about it.

Overview

The Bananalogue VCS 2 is a reissue of a cult-classic Dual Universal Slope Generator, released as a 20th-anniversary edition of the original Bananalogue Serge VCS. It was marketed under several names, including "Bananalogue VCS 2 Dual Universal Slope Generator." This Eurorack module brings Serge's West Coast synthesis approach to modern modular systems. It acts less like a traditional envelope and more like a dynamic function generator. It can work as an LFO, voltage-controlled oscillator, glide generator, filter driver, or even distortion source. Enthusiast forums call it a "%100 analog swiss army knife" and "a total 'Swiss Army' module."

Despite its compact footprint, the VCS 2 is dense with potential. It features two independently voltage-controllable slope generators, each capable of rising and falling ramps with response curves shaped by front-panel controls and CV inputs. According to available documentation, the module’s output is a unity gain voltage follower, preserving signal integrity while allowing integration into complex modulation networks. The AC-coupled output suggests attention to signal isolation, though specifics on voltage ranges and timing remain undocumented. Its design traces back to the original Serge circuits, with the Bananalogue version recognized as the first West Coast function generator adapted for Eurorack — a milestone cited in both community discussions and technical archives.

Specifications

Manufacturer	Bananalogue
Product Type	Eurorack module
Description	Dual Universal Slope Generator
Dimensions	9 HP
Depth	26 mm
Current Draw	45 mA +12V; 12 mA -12V; 0 mA 5V
Function	The rising and falling slopes are independently and jointly voltage controllable
Output	Unity gain voltage follower
Output Coupling	AC coupled output
Control Voltage	VC control both Rise and Fall H Exp CV
Control Voltage Scaling	Approximately 1V/Oct scaled input

Key Features

Dual Universal Slope Generator with Voltage-Controlled Rise and Fall

This is where the VCS 2 gets its reputation. Unlike fixed-function envelope generators, each slope generator responds to triggers and voltages with adjustable rise and fall times, set by hand or by CV. You can voltage-control both slopes at once or modulate them independently. That allows complex contour shaping for evolving textures, pseudo-LFOs, or chaotic modulation paths. The "H Exp CV" input reportedly gives an exponential response to control voltage, which helps musically when paired with 1V/Oct sources. The module can mimic other modules: slow sweeps act as LFOs, fast transients serve as gates, and audio-rate cycling suggests VCO-like operation.

AC-Coupled Unity Gain Voltage Follower Output

The output stage is a unity gain buffer. It passes the generated slope signals along without amplification. Because it is AC-coupled, it blocks DC offset, which helps prevent unwanted voltage drift in downstream modules. Stable DC levels can interfere with modulation accuracy in a modular system, so this suits the job. The exact bandwidth and distortion characteristics aren't documented, but a voltage follower implies minimal coloration.

Approximately 1V/Oct Scaled Control Input

The inclusion of an approximately 1V/Oct scaled input aligns the VCS 2 with standard analog synthesizer pitch control conventions. This allows integration with sequencers, keyboards, or other 1V/Oct sources for logarithmic modulation of slope timing — useful for creating musically spaced rhythmic divisions or tempo-synced envelopes. The use of “approximately” in the specification indicates potential slight deviations from perfect scaling, a detail users should verify in practice, especially when tight timing alignment is critical.

Historical Context

The VCS 2 is a new production run of the original Bananalogue Serge VCS, released two decades after its predecessor. It is one of the earliest Eurorack adaptations of Serge's West Coast synthesis architecture, specifically the Dual Universal Slope Generator (DUSG) topology. Its release reignited interest in Serge-style function generators in the Eurorack community, predating and influencing later interpretations such as the Doepfer A-171-2. According to available documentation, the Bananalogue version was instrumental in bringing this West Coast concept to a broader modular audience. One Reddit commenter noted, “This is what Maths is based on anyways. bananalogue serge vcs was the …”, which suggests conceptual influence on later designs, though no direct lineage is confirmed in the fact sheet.

Collectibility & Value

New units have listed at $220, €194.72, and used examples appear around £147.71. No data exists on long-term value trends or depreciation. Collector sentiment is complicated by the reputation of the manufacturer. A ModWiggler forum user noted, “The guy behind Bananalogue ripped off a lot of synth people and role-playing game people through Kickstarter and eBay. Wonder if he made good on any of that?” That history may affect trust and secondary market confidence, even if the module itself is technically respected. No information is available on common failures, maintenance needs, or spare parts availability.