ALM Busy Circuits PE-1
Warm Portastudio-inspired dual band parametric EQ
5 HP Eurorack module
PE-1 is a dual band parametric equalizer with two sweepable frequency bands offering up to 12dB of boost or cut, inspired by the warm EQ circuits found in classic Portastudio 4-track cassette mixers. It functions as a simple two-channel mixer with a single attenuation control on one input. The module imparts a warm, musical character ideal for softening digital sources, sculpting live performances, or feeding feedback loops.
Features
- Dual band parametric EQ with +/-12dB of boost and cut
- Sweepable frequency selection for both low and high bands
- Two AC-coupled audio inputs
- Input 1 attenuation control for basic two-channel mixing
- Single audio output
- Inspired by classic Portastudio 4-track tape mixer EQ circuits
- Warm analogue character suitable for softening digital sources
- Reverse polarity protection
- Skiff friendly low depth
- Designed and made in the UK
Controls & Jacks (9)
- Low Band Gain — Selects the center frequency of the lower EQ band
- Low Band Frequency — Boost or cut the lower frequency band by up to ±12dB
- High Band Gain — Selects the center frequency of the upper EQ band
- High Band Frequency — Equalized audio output
- Input 1 — First audio input with attenuation control
- Input 2 — Second audio input
- Input 2 — Boost or cut the upper frequency band by up to ±12dB
- Input 1 Attenuation — Controls the level of the first audio input for mixing purposes
- Output — Equalized audio output
How-To Guides
- Warming Up a Digital Oscillator
- Basic Two-Source Mix with EQ
- Taming a Feedback Loop
- FM Drum Presence Boost
- Live Performance Tone Shaping
- Modular Mixer Extension with EQ
- Ambient Texture Sculpting
- Bass Tone Carving
Explore the interactive PE-1 panel on BleepDex — tap any control to learn what it does.
