DC-13 Dual Bus Converter V2
DC-13 Dual Bus Converter Version 2
Control Two Modern Guitar Synthesizers with One Vintage Guitar Synth Controller
Combines Roland BC-13 and US-20 Technology in One Compact Enclosure
Works with Roland G-202, 303, 505, 707, 808, Ibanez IMG2010 and Roland GI-10, GI-20, GR-1, GR-9, GR-30, GR-33, VG-88 and More!


The unique DC-13 V2 has all the features of the Roland BC-13 combined with a Roland US-20.


Features of the DC-13 V2:
  • Use One Vintage Roland 24-Pin Guitar Controller to play Two 13-Pin Modern Guitar Synthesizers
  • Independent Volume Control Over Each Synthesizer
  • Powered by 13-Pin Guitar Cable! No External Power Supply or Batteries Required
  • Rugged Stomp-Box Enclosure Design
  • Backed by One-Year Parts and Labor Warranty
  • Elegant Design

The New Link Between Vintage and Modern Roland Guitar Synth Technology:

The DC-13 V2 integrates BC-13 and US-20 technology in one compact, stomp-box enclosure with output switching.

    For about ten years, Roland Corporation and other manufacturers produced a range of unique, very high quality 24-pin guitar synthesizer controllers. With the advent of the contemporary Roland 13-pin standard, vintage guitar synth owners could only access the latest in guitar synthesizer technologies with the incredibly rare, hard-to-find Roland BC-13 Bus Converter.

    The DC-13 V2 expands on the features of the BC-13 by adding Roland US-20 style switching features so that not only one, but two synthesizers can be played at the same time. The DC-13 V2 also has features not found on the US-20, like the ability to independently control the volume levels of each guitar synthesizer.



Completely Independent Volume Control Over Two Guitar Synthesizers:

The DC-13 V2 uses the Filter knob to control the volume of synthesizer one, and Resonance to control the volume of synthesizer two.

    In addition to the footswitch controls on the DC-13 V2, there is completely independent control over both synthesizers’ volume. The DC-13 V2 does this by using the Filter knob (or CV#1) on a vintage GR-Controller to control the volume of guitar synthesizer A, and by using the Resonance knob (or CV#2) on a vintage GR-Controller to control the volume of guitar synthesizer B. The Master Volume knob is still used to control the volume of the normal guitar output from the 1/4” jack on the guitar .


Expanded Direct Guitar Output Options:

    The DC-13 V2 expands on the original Roland BC-13 by adding a standard Roland EV-5 input jack to control the volume of the direct guitar sound. This gives the player three ways to control the volume of the direct guitar sound: by using a Roland EV-5 pedal to control the volume, or by running a second cable directly from the guitar to the DC-13 V2 and using the master volume control on the guitar, or by using the guitar output feature on the attached guitar synthesizer module.



    Inputs and Outputs
    Like a Roland BC-13, the DC-13 V2 has a 24-pin Guitar Synth and 1/4” Guitar input jack, and a 13-pin Guitar Synth output connector. With only the 24-pin cable plugged in, the level of the direct (humbucker) guitar sound can be controlled by an optional pedal. If you want to vary the level of the direct (humbucker) sound using the volume knob on the guitar, then a second cable is connected from the 1/4” Guitar output jack on the Guitar Controller to the 1/4” Guitar input jack on the DC-13 V2. This is the same design used by the Roland BC-13.



Compatible with Vintage Bass Guitar Synthesizers:

    The DC-13 V2 has also been thoroughly tested with the vintage Roland bass guitar synthesizer controllers like the G-88. To test for compatibility, the G-88 was plugged into the DC-13 V2, then the DC-13 V2 was connected to a GI-20. The Roland GI-20 supports bass guitar synths with a switch on the back panel for bass operation.

    Other Roland guitar synths, such as the GR-50 may not work properly, since they were not designed to handle to lower frequencies of a bass guitar.


    Bass Control
    The DC-13 V2 is also designed to work with bass controllers as well. However, it is important that the connected synthesizer supports bass synthesizer operation.



QuickTime Video Demos:

These demos were recorded with a DC-13 and a Roland G-707, VG-88, GI-10 and a Yamaha CS6R.


Using a Vintage Controller with the Latest Roland Technology
With a DC-13 this Roland G-707 guitar can access the cool sounds of the cutting edge Roland VG-88 Virtual Guitar System. In this short demo, the G-707 is used to generate a stunning nylon acoustic guitar sound. This is probably the only "nylon" guitar in the world with a whammy bar!
Pitch-to-MIDI Tracking
In this demo, the DC-13 is used with the G-707 to play two contemporary Roland synths: the Roland GI-10 Pitch-to-MIDI converter and the VG-88 Virtual Guitar Synth. First the GI-10 quickly and accurately translates hammer-ons and pull-offs to drive a synth patch from a Yamaha CS6R. Then Electric and 12-String acoustic guitar sounds from the VG-88 are blended with the original Yamaha synth by using the Master Volume and the EDIT knob.

Frequently Asked Questions:

  • Does the DC-13 V2 add any latency or delay?


  • NO! None of my processors add any delay at all. Like the GR-300 and GR-100, they are purely analog processors that do not suffer from the inevitable latency introduced by digital systems. Many players notice that their guitar synths actually play better, since the gain stages have been especially designed to deliver the best possible signal to the guitar synthesizer.

  • Will the DC-13 V2 work with ANY Vintage Roland Guitar Controller or Guitar Synth?


  • YES! I have tested this with the Roland G-303, G-505, G-707, G-808 and the Ibanez IMG2010. The DC-13 is also designed to work well with the Roland GK-1, and other third party controllers built by Gibson, Steinberger and others. The DC-13 V2 has also been tested with the Roland GR-33, GI-10, GI-20 and VG-88.

  • Does this unit require any power?


  • NO. The DC-13 V2 gets its power from the connection to guitar synthesizer A. This is the same approach Roland used for the BC-13, US-20 and GKP-4.

  • Where do you get the connectors? I thought they were discontinued by Roland a long time ago.


  • YES! Roland discontinued the connectors from active production about fifteen years ago. So the 24 pin connectors are virtually impossible to find. I bought as many of these connectors as I could from Roland a while back. Depending on availability, I also use connectors refurbished vintage guitars and synths. Either way, there is no new supply of these connectors, so all the processors I build have a very, very limited production run.

Download the DC-13 V2 Owner’s Manual

View the original DC-13



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