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GS & XG Effect Monitors

PXR includes a whole suite of windows that show, in real time, exactly what a Roland GS or Yamaha XG synth's effects are doing as a file plays, and let you reach in and adjust them on the fly. These are advanced tools for people working with GS or XG hardware (or compatible modules); most listeners will happily never need them.

Open them from the Effects menu (GS and XG submenus). New to these effects? Effects & Sound Shaping explains what reverb, chorus, EFX and the rest actually do.

How the controls work#

  • Live monitoring: the dials and readouts mirror the synth's current settings as the file plays, so you can watch a song set itself up and tweak its effects as it goes.
  • Interactive: when you are connected to compatible hardware and playback has started, you can drag a dial (or a send bar) to send a new value straight to the synth. On the built-in synth, and before playback begins, the windows are display-only.
  • Channel send bars: most reverb and chorus windows show a row of vertical bars, one per channel, for how much of each channel is fed into that effect. Drag a bar to change its send.
  • Cross-linking: every window has a sidebar of pills. Left-click a pill to switch to that window; right-click to open it alongside the current one, so you can watch two at once.

The controls below are listed with the label as it appears on screen and a plain-English description.


GS effect windows

GS Reverb#

The GS Reverb window, set to Type: Hall 1, with rotary knobs for Level, Character, Pre-LPF, Time, Delay FB and Pre Delay Time, and a row of blue Channel Sends bars (CC#91) across the 16 channels.

  • Type: the reverb algorithm (Room, Hall, Plate, Delay, and so on).
  • Level: how loud the reverb return is.
  • Time: how long the reverb tail rings out after a sound stops.
  • Character: the tone or colour of the reverb, from diffuse to clear.
  • Pre-LPF: rolls off the high frequencies going into the reverb (higher is duller).
  • Pre-Delay Time: the gap before the reverb starts, like the distance to the first wall in a room.
  • Delay Feedback: feedback amount for the delay-style reverb types (ignored by Hall/Room/Plate).
  • Channel sends: a bar per channel for how much each one feeds the reverb.

GS Chorus#

The GS Chorus window, set to Chorus 3, with modulation knobs for Level, Pre-LPF, Feedback, Delay, Rate and Depth, send-routing knobs to Reverb and Delay, and a row of Channel Sends bars (CC#93) across the 16 channels.

  • Level: how loud the chorus is.
  • Rate: how fast the chorus wobble moves.
  • Depth: how deep the wobble is.
  • Feedback: feeds the chorus back into itself to thicken it.
  • Delay: the base delay of the chorused copy.
  • Pre-LPF: rolls off highs going into the chorus.
  • Send to Reverb and Send to Delay: how much of the chorus is passed on to those effects.
  • Channel sends: a bar per channel for the chorus send level.

GS Delay#

The GS Delay window, set to Delay 1, with parameter knobs for Level, Pre-LPF, Time C, Time Ratio L and R and Level C, L and R, plus a Tone feedback knob and an Output send to Reverb.

  • Level: overall delay output.
  • Time C: the main (centre) delay time.
  • Time Ratio L / R: the left and right delay times relative to the centre, for stereo echoes.
  • Level C / L / R: the volume of the centre, left, and right taps.
  • Feedback: how much of the echo repeats (can be inverted for a different character).
  • Pre-LPF: rolls off highs in the echoes.
  • Send to Reverb: how much delay is passed into the reverb.

GS EFX (insertion effect)#

The GS EFX insertion-effect window, set to OD1/OD2 in parallel, showing a grid of overdrive and distortion parameters, send knobs to Reverb, Chorus and Delay, a Send EQ switch, and two real-time controller slots.

  • Type: the active insertion effect (distortion, overdrive, phaser, tremolo, and many more).
  • Routing: which channel the effect is applied to, or whether it is bypassed.
  • Parameter grid: a set of controls that changes to match the chosen effect type (the labels follow the synth's manual for that effect).
  • Sends to Reverb / Chorus / Delay: how much of the effect output is passed on.
  • Send EQ: switches the insertion effect's built-in equaliser on or off.
  • Real-time controllers: two assignable controls that let something like the modulation wheel or aftertouch change a chosen parameter live.

GS EQ#

The GS EQ window, with a frequency-response curve across the top, low-shelf and high-shelf frequency and gain controls below, and a per-part grid for switching EQ on or off per channel.

  • Low shelf: a frequency choice plus a boost/cut control for the low end.
  • High shelf: a frequency choice plus a boost/cut control for the top end.
  • Curve: a graph showing the resulting tone shape.
  • Per-part grid: a grid of all channels; click a channel to switch the EQ on or off for it.

GS Drum Kit#

The GS Drum Kit window, a two-column table listing every drum sound in the kit with its note, name and Pitch, Level, Pan, Reverb, Chorus and Delay values, alongside activity LEDs.

A table of every drum sound in the current kit. For each drum note it shows the note, the drum name, and its Pitch, Level, Pan, and Reverb, Chorus, and Delay send levels. A column of LEDs lights up to show which drums are playing.


XG effect windows

XG Reverb#

The XG Reverb window, set to Type: Hall 2, with knobs for Time, Diffusion, Initial Delay, Reverb Delay, Density, Er/Rev, High Damp and Feedback, a draggable cutoff curve from HPF 40 Hz to LPF 4 kHz, Return and Pan knobs, and Channel Sends bars (CC#91) across all four ports A to D.

  • Time: the reverb decay length.
  • Diffusion: how dense the reflections are.
  • Initial Delay: the gap before the reverb starts.
  • Reverb Delay: an extra delay stage within the reverb.
  • Density: the character of the reflections.
  • Er/Rev: the balance between the early reflections and the reverb tail.
  • High Damp: how quickly the high frequencies fade in the tail (higher is duller).
  • Feedback: adds colour and resonance to the reverb.
  • Room geometry (for room-style reverbs): Width, Height, Depth, and Wall Vary shape the simulated space.
  • Cutoff curve: draggable high-pass and low-pass shoulders that filter the reverb, with the frequencies shown below.
  • Return and Pan: the reverb's overall level and stereo position.
  • Channel sends: a bar per channel for the reverb send.

XG Chorus#

The XG Chorus window, set to Type: Chorus 1, with knobs for LFO Frequency, LFO Depth, Feedback, Delay Offset and Input Mode, a three-band EQ, Return, Pan and Send to Reverb knobs, and Channel Sends bars (CC#93) across all four ports.

  • LFO Frequency: how fast the chorus moves.
  • LFO Depth: how deep the movement is.
  • Feedback: feeds the chorus back into itself.
  • Delay Offset: shifts the chorus delay timing.
  • Input Mode: processes the input as mono or stereo.
  • EQ: a three-band tone control with a draggable curve (frequency, gain, and Q per band).
  • Return, Pan, and Send to Reverb: the chorus's level, position, and how much it passes to the reverb.
  • Channel sends: a bar per channel for the chorus send.

XG Variation#

The XG Variation window, set to Comp + Overdrive + Delay, with a grid of effect parameters such as Delay Time, Feedback, Dist Drive and Dry/Wet, Return and Pan knobs, sends to Reverb and Chorus, and a row of controller-depth knobs.

  • Type: the variation effect in use (delay, phaser, tremolo, rotary speaker, and many more).
  • Routing: which channel the effect applies to, or whether it is bypassed.
  • Parameters: a set of controls specific to the chosen effect; drag a value to change it.
  • Return, Pan, Send to Reverb, Send to Chorus: the effect's level, position, and how much it passes on.
  • Controller depths: how strongly the modulation wheel, pitch bend, aftertouch, and two assignable controllers affect the effect.

XG Insertion#

The XG Insertion window with slots INS1 to INS6, set to a Compressor on INS1, showing dynamics parameters (Attack, Release, Threshold, Ratio, Output Level), extended parameter slots, and controller-depth knobs.

  • Slot selector: switches between the dedicated insertion-effect slots (the number available depends on the model).
  • Type and Routing: the effect in use and the channel it is applied to (or bypassed).
  • Parameters and Extended parameters: the controls for the chosen effect.
  • Controller depths: how strongly the modulation wheel, pitch bend, aftertouch, and two assignable controllers affect the effect.

XG Multi-EQ#

The XG Multi-EQ window, set to Preset: Flat, with a five-band frequency-response curve and per-band readouts of frequency, gain and Q at 80 Hz, 500 Hz, 1 kHz, 4 kHz and 8 kHz.

  • Preset: a starting tone shape (Flat, Jazz, Pops, Rock, Concert, and so on).
  • EQ curve: a five-band graph; drag a band up or down to boost or cut it.
  • Per-band readouts: each band's Frequency, Gain, and Q (bandwidth). Narrower Q affects a tighter range of frequencies.

XG A/D Part#

The XG A/D Part window, showing the module's audio-input part with a Part 1 / Part 2 toggle and an Input readout set to Mic. Panels below cover the mixer (Volume, Pan, Dry Level), effect sends (Reverb, Chorus, Variation), routing (receive channel, bank and program), control (mono or stereo mode and two assignable-controller numbers), and a row of receive switches.

The A/D Part is the audio input on MU-series hardware, a microphone or line source plugged into the module and mixed in alongside the MIDI parts. This window mirrors how a file sets that input up. It is a read-only monitor: there is no live audio when you play a MIDI file, so it shows the routing the file configured, or the hardware defaults if the file leaves the input alone.

  • Part 1 / Part 2: switches between the two A/D parts (the MU1000 and MU2000 have two).
  • Input: whether the input expects a Mic or Line level signal.
  • Mixer: Volume, Pan, and Dry Level for the input.
  • Effect sends: how much of the input goes to Reverb, Chorus, and Variation.
  • Routing: the receive channel that controls the input, plus its Bank and Program.
  • Control: the A/D Mode (mono or stereo) and the two assignable-controller numbers (AC1, AC2).
  • Receive switches: whether the input responds to Mute, program changes, control changes, volume, pan, expression, and bank select.

XG Drum Kit#

The XG Drum Kit window, a two-column table listing every drum sound with its note, name and Pitch, Level, Pan, Reverb, Chorus and Variation values, alongside activity LEDs.

A table of every drum sound in the kit, showing each drum's note, name, Pitch, Level, Pan, and Reverb, Chorus, and Variation send levels, with an activity LED column showing which drums are playing.

The window resizes to the kit. Drag it to any size and the whole kit fits without a scrollbar, even the largest PLG150-DR kits. The rows close up or spread out to fill the space, so a short kit leaves no empty gap at the bottom, and the activity LEDs stay perfectly round at every size.

It reads PLG150-DR and PLG150-PC kits too. All 160 of the board's drum and percussion kits come up by name, and every pad in them names the instrument it actually plays rather than a general-purpose label. Those files often put the kit on an ordinary channel rather than channel 10, and the part buttons along the top will offer it wherever it is. See PLG Daughterboards.

Last updated: 2026-09-02