The Dytronics CS-5 Tri-Stereo Chorus/Splitter, released in 1987 by KTI, has earned its place as one of the most revered and elusive chorus processors ever produced. Often described as the “Holy Grail” of chorus units, it was designed by Chuck Monte, the man behind the famous “Dyno-My-Piano” modifications to the Fender Rhodes. Monte’s goal was to bring the same kind of sonic richness he achieved with Rhodes pianos to a dedicated rack chorus unit aimed at the professional studio market. The result was the Dytronics CS-5, a processor whose lush stereo textures became a defining sound of the late 1980s studio scene.
At the heart of the Dytronics CS-5 were three independent bucket-brigade delay channels, Left, Centre, and Right, each driven by its own dedicated low-frequency oscillator. This architecture allowed for deep and complex modulation across the stereo field, producing the wide, shimmering textures that made the unit legendary. The Manual LFO Selector permitted each channel to be modulated by a different waveform, creating constantly shifting chorus effects that were both unpredictable and musical. Three independent intensity controls shaped the modulation blend, while the Rate Control adjusted chorus speed, even enabling rotating speaker-style effects.
The Dytronics CS-5 also featured a Pre-Set LFO section, injecting a separate modulation cycle that could run simultaneously with the Manual section. Used together, these created the ultra-lush chorus textures that became synonymous with ’80s Los Angeles session guitar. Chorus Mode automatically shifted the phase relationship of the stereo outputs, enhancing depth and imaging, while a front-panel Effect On/Off switch made for straightforward operation. Practical features included a self-compensating –12 dB input pad for compatibility with both instrument and line-level signals, as well as a bright LED bar graph output meter. Balanced XLR and ¼-inch outputs ensured seamless integration into professional studio racks.
What made the Dytronics CS-5 extraordinary was not just its design but also its cultural impact. It became a mainstay in the racks of L.A. session royalty such as Michael Landau, Steve Lukather, and Dann Huff, players whose tones defined an entire era of pop and rock production. Landau in particular used the unit to craft his signature shimmering clean sounds, heard on countless records and celebrated on his Tales From The Bulge album.
Producer Robert “Mutt” Lange is also rumoured to have relied on the Tri-Stereo Chorus during the making of Def Leppard’s Hysteria, where the expansive guitar layering bore the unmistakable qualities of the Dytronics CS-5. While speculation persists over whether Lange used a Dytronics-branded model or one of its Dyno-My-Piano or Songbird variants, the sonic character of the Dytronics CS-5 is undeniably close to the guitars heard on those records.
Because of its unique architecture and hand-built nature, the Dytronics CS-5 was produced in very limited numbers. This scarcity has only enhanced its legend. On the vintage market, original units regularly command prices in the thousands, with collectors and engineers seeking the unmistakable shimmer that no clone or reissue has ever fully replicated. Despite numerous attempts to recreate its magic, the Dytronics CS-5 remains unique in its ability to blend warmth, unpredictability, and expansive stereo imaging.
More than thirty-five years after its release, the Dytronics CS-5 Tri-Stereo Chorus/Splitter continues to inspire awe among guitarists, producers, and collectors alike. It stands not only as a technical achievement in analogue modulation but also as a cultural milestone, forever linked with the polished, widescreen sound of 1980s rock and pop.
Features
- Three independent bucket-brigade delay channels: Left, Centre, and Right
- Manual LFO Selector for individual waveform modulation per channel
- Three intensity controls for blending unique modulation waveforms
- Rate Control with real-time adjustment for rotating speaker effects
- Pre-Set LFO section for additional complex modulation
- Chorus Mode with automatic stereo phase relationship adjustment
- Front-panel Effect On/Off bypass switch
- Self-compensating –12 dB input pad for instrument and line-level signals
- Output level LED bar graph for easy monitoring
- Balanced XLR and ¼-inch outputs for studio integration
