2hp LPG V2 ()
That subtle click before the sound swells and decays - this tiny gate shapes tone like a whisper turning into a shout.
Overview
The 2hp LPG V2 is a minimalist Eurorack module that does one thing: it's an analog low-pass gate. Beepboop Electronics builds it. It's not an envelope generator or a filter in the traditional sense. It's a hybrid, using a vactrol-based circuit to open and close in response to control voltage, so amplitude and timbre change together. You reach for it when you want a soft, organic pluck - a marimba hit, a muted thumb piano, or the ghost of a bell that never quite rings out. It's simple, but it's expressive, especially with short triggers or envelope gates.
Owners report it excels in percussive patches, where its ability to "ping" with character becomes obvious. The VTL5C vactrol at its core gives it a slow, velvety response. It's not instant like a VCA. It's meant to color and soften, and to blur the edge between note and silence, not to be fast or clean. And because it's only 2 hp wide, it fits into even the tightest systems. It isn't a centerpiece module. It's a texture tool.
Specifications
| Manufacturer | Beepboop Electronics |
| Product type | Eurorack module, analog LOW-PASS GATE |
| Width | 2 hp |
| Weight | 0.25 kg |
| Dimensions | 34 × 20 × 2 cm |
| Depth | 30mm |
| Current Draw | +12V: 10mA, -12V: 10mA |
| Price | £59.00 |
Key Features
Vactrol-Based Low-Pass Gate
At the heart of the LPG V2 is a VTL5C vactrol - a light-dependent resistor paired with an LED, used here to make a smooth, voltage-controlled gate. A VCA only shapes amplitude. A low-pass gate also affects frequency content, rolling off the highs progressively as the gate closes. That gives the module its softness, especially on transients. The sound doesn't just fade out - it darkens, thins, and melts away. It's particularly effective with short triggers (around 10ms), producing the classic "ping" associated with West Coast synthesis.
Improved CV Attenuator
One of the key upgrades in the V2 is the refined CV attenuator. Earlier versions reportedly had a "dead zone" - a range where turning the knob did little because the internal LED wasn't yet bright enough to activate the vactrol. The V2 eliminates this gap, so the response is smoother and more predictable across the full rotation. That makes it easier to dial in subtle dynamics, especially with nuanced control voltages from sequencers or random sources.
Cutoff Depth Switch
A three-position toggle switch sets the tonal character of the gate. In the top position, the sound is described as "Dark" - a tightly filtered, muffled output. The middle position opens up to "Bright," letting more high end through for a crisper attack. The bottom position is "DEEP Dark," an even more closed response that can turn a snare-like burst into a soft thud. This switch changes more than volume. It reshapes the whole envelope and spectral profile.
Decay Time Control
Another switch adjusts the decay time, which changes how quickly the gate closes after a trigger. That gives hands-on control over the release, from tight staccato to lingering fades. There's also a hidden trick: a tiny switch embedded in the Vactrol symbol on the front panel toggles an internal LED. When enabled, this LED shortens the decay time, effectively giving a fourth, faster response curve.
CV Input Behavior
The CV input is designed for 0-5V signals, so it works with standard gate and envelope outputs. Applying voltages above +7V can cause audio bleed - the signal leaks through even when the gate should be closed. This isn't a failure mode, but a known limitation. Some might exploit it creatively, but for clean gating, stick to the recommended range.
Collectibility & Value
The 2hp LPG V2 is currently listed at £59.00 by the manufacturer, Beepboop Electronics, and this is considered the authoritative price. There is no confirmed original price or secondary market data available, and no reports of common failures or maintenance issues. Given its recent production status and straightforward design, it appears to be more of a functional module than a collectible, valued for its utility rather than rarity.
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