Dübreq Stylophone DF-8 Analog Dynamic Multi-Filter Synthesizer

Stylophone DF-8 — Dual Analog Multi-Filter for Sonic Sculpting

The Stylophone DF-8 is a desktop analog dynamic multi-filter module that combines two distinct filter designs in one compact enclosure. Dubbed "Beauty and the Beast" by the manufacturer, it pairs a smooth recreation of the classic 2045 lowpass with Stylophone's proprietary GEN R-8 multi-mode filter. The result is a portable sound-shaping tool spanning everything from silky resonance to aggressive, snarling distortion. Producers and electronic musicians who need a flexible, battery-powered filter module for desktop or Eurorack use will find this unit a natural fit.

Two Distinct Filter Designs in One Box

What sets this module apart is the marriage of two filter circuits: a 24 dB/oct 2045-style lowpass and a 12 dB/oct GEN R-8 multi-mode design. Three hybrid modes — Bandpass+, Notch+ and Bandstop+ — fuse both circuits for dual-peak and wide-band shaping no single filter can deliver. Experimental textures and self-generating rhythms are opened up by a vintage PT2399 delay with modulation and a sample-and-hold source with adjustable slew.

Filter Architecture — 8 Types, 2 Channels

The dual filter architecture gives players eight distinct filter modes per channel, covering the full spectrum of subtractive synthesis.

• Filter Channels: 2 analog multi-mode channels — independent operation or stereo-linked
• Filter Types: 8 per channel — LP, BP, HP, Notch plus Bandpass+, Notch+ and Bandstop+ hybrids
• GEN R-8 Slope: 12 dB/oct — bright, expressive character
• The 2045 design offers classic and smooth lowpass behavior with a 24 dB/oct slope.

Modulation and Sound Design Tools

Beyond filtering, this unit ships with a complete modulation toolkit for shaping movement and dynamics.

• ADSR Envelopes: 2 with linear/exponential response — loopable for LFO-style behavior
• Trigger Modes: 4 options — gate, audio threshold, autorepeat and manual triggering
• Sample-and-hold with adjustable slew and sync generates stepped random voltages for chaotic filter motion.
• Built-in Delay: vintage PT2399 with modulation — adds ambience or crunch to filtered signals

Connectivity, Power, and Form Factor

Designed for studio, stage, and travel, the DF-8 fits a 42 HP Eurorack front panel and locks together with other CPM units.

• Patch Points: 14 modular patch points — extensive routing for audio, envelopes, filters, VCAs and S&H
• Power Options: 6 AA batteries or 12V external PSU (1000 mA, centre positive) — fully portable operation
• A 2W monitor speaker allows for cable-free auditioning on the go.
• Dimensions: 24 cm × 4.2 cm × 13.2 cm — slim desktop footprint

Who Is the DF-8 For?

This model is the right choice for electronic musicians, sound designers, and Eurorack builders who want a portable filter module without committing to a full modular system. It excels as a companion to a drum machine, adding analog warmth to dry percussion, and works equally well as a master stereo filter on a desktop synth setup. Experimental patchers will appreciate the sample-and-hold modulation and built-in noise sources, which can turn the unit into a self-generating drum machine.

Stylophone and the CPM Range

This unit is the second module in Stylophone's Compact Portable Modular (CPM) range, following the DS-2 drone synth. Dubreq has built a reputation for portable, characterful analog instruments that bridge the gap between standalone performance tools and modular systems.