Studio D Chorus Manual

Beautiful subtle modulation and movement for every track.

Introduced in 1979, the Roland Dimension D* chorus is famous for injecting spatialization, and sweet, subtle modulation. Used as a "secret sauce" by everyone from Brian Eno to Stevie Ray Vaughan, this legendary rack piece is an ideal example of functional simplicity.

The Studio D Chorus plug-in for UAD Spark and UADx is an exacting emulation of this sought-after rack unit, deftly capturing its musical bucket-brigade circuit, the key to its complex range of sounds and textures.

  • Add subtle spatial effects to instruments and buses
  • Easily open up background vocals, strings, and more
  • Use the "all buttons" mode for an extra shade of space and depth
  • Enhance tracks and add pop and interest without obviously effecting signals

Enter the Bucket Brigade

Whereas most analog bucket-brigade chorus circuits work with 512 or even fewer delay stages, the Studio D Chorus plug-in captures the original hardware's whopping 1024 stages per channel. This design offers complex modulation that fattens the stereo image in very "non-chorus" fashion.

Four Buttons and the Truth

With four push-buttons as its only controls, the Studio D Chorus plug-in perfectly captures the iconic hardware's understated elegance. Each button gives you four different levels of effect intensity. Engage all four buttons at once, and you get one more tantalizing modulation choice. Like with the hardware, the buttons can used be in any combination for a large sonic palette.

Strength in Subtlety

Like the iconic hardware, the Studio D Chorus plug-in does not create a dramatically new sound — it enhances it. You can make simple guitar/vocal arrangements wider, deeper, and more interesting, or quickly gel groups of strings and vocals — without compression, EQ, or reverb. For floating guitar textures and synth pads, the Studio D Chorus plug-in simply can't be beat. Ultimately, the Studio D Chorus plug-in's utterly unique character on nearly any source make it an essential tool for every engineer's toolkit.


Studio D Chorus



Studio D Chorus Controls

The Studio D Chorus is a very simple device to operate as it has only three parameters: Power, Mono, and Mode. Each control is detailed below.

Dimension Mode

Dimension Mode determines the effect intensity. Four different modes are available. Mode 1 provides the most subtle effect, and Mode 4 has maximum intensity.

Multiple Buttons

True to the original hardware, multiple Dimension Mode buttons can be engaged
simultaneously for subtle sonic variations of the four main modes. To engage multiple Dimension Mode buttons, press the Shift key on the computer keyboard while clicking the Mode buttons.


The original hardware has an input switch on the rear panel that configures the unit for mono-in/stereo-out operation. This function is modeled in the plug-in and the switch is moved into the interface for convenience.

When Input is set to MONO, the input to Dimension D is monophonic even when used in a stereo-input configuration (stereo inputs are summed to mono). Stereo-in/mono-out can be useful for sonic variation, such as when the plug-in is used in an auxiliary effect send/return configuration.

The default position (in/darker) is STEREO. Click the switch (out) to enable Mono mode.


The is the plug-in's overall bypass control for quickly comparing the processed and unprocessed signal. In the ON (in) position, signal processing is active. In the OFF position (out), the unprocessed signal is heard. Click the button to change the POWER state.

Tip: Processor usage is reduced when the POWER is off.

Power LED

The Power LED is illuminated when the plug-in is active.

Output Meter

This LED-style meter represents the level of the signal at the output of the plug-in when processing is active.

Studio D Chorus hardware



*Note: The Studio D Chorus product is not affiliated with, sponsored, nor endorsed by Roland. The Roland name, as well as the Dimension D model name is used solely to identify the classic effects emulated by Universal Audio's product.

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