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User reviews on Audio/MIDI Converter products

get a new sound (Roland - GR-20)

By theaudioandvideoguy, 29/05/2012
The Roland GR 20 is an guitar synthesizer that you must own if you play the electric guitar. it’s a complete system that has a great selection of sounds like strings, organ , synths and many more. Editing everything on the Roland GR 20 couldn’t be easier either with the quick editing knobs like chorus and release / delay. The Roland GR 20 also has some of the newest and latest sounds that come on other Roland products. If you are a Les Paul type guitar player there is an attachment plate for you as well.


There was a little learning curve me to get familiar with the unit itself. It wasn’t difficult but I didn’t read any manuals so I just started messing around with it it. Using it is painless but it was one of the first type of pieces of gear like this that I have ever used so it too me a while to really get the feel and flow of how it works and what each knob does and how well it does it. But after a few hours I had no further problems. It was even fun just doing the trial and error method because I was able to create some really neat sounds. It really brought my creativity out.


Sounds are good, it has some sax, flute, and brass just to name a few. Everything seems to sound pretty realistic as well. Most Roland sounds do sound authentic and they have carried that over to the Roland GR 20.


Overall, if you are in need of a guitar synthesiser then this could be the one you need to get. It cost a little more than what I was expecting and most of Rolands products arent cheap so I do expect it to hold up for me for a long time. Only time will tell how well built it is, I havent dropped it yet so that is a plus. I am looking forwared to some more synths for guitars that roland will come out with in the future.

great interface (Roland - VG-99)

By theaudioandvideoguy, 29/05/2012
The Roland VG 99 is a guitar system that was really appealing to me. Just the look of it seemed like it was something that I could really use. But before spending money on it I had a chance to really get into depth and use it for a while to see if it was something that I really would like. One of the key things that really made this unit stand out to me was just the overall functions of the unit. It seemed like Roland really put some time into making the VG 99. From its previous models there are many upgrades that they have made to make it quicker to do what you wanted.


It wasn’t easy for me to get started with this unit. I did have to open up the manual and spend a little time reading. But I did that from the start so I could eliminate the countless minutes I would spend doing trial and error. The manual was very easy to understand and it was clear and concise. After reading through the manual a little while I had the hang of it and was ready to get going.


The sounds quality on the VG 99 is second to none, you really couldn’t ask for much more for this price. It supports USB connection to computers and also midi connections for other devices like other keybaords and modules or anything that can take midi connections. Connecting all of this stuff is very easy if you understand how midi works in comparison to different devices and sound.


Overall, Very pleased with the VG 99 the interface was a bit confusing at first but that was nothing that the manual couldn’t help me power through. You have the ability to really get some good sounds, and more importantly you can really get the sound you want with the Roland VG 99. The VG 99 really has taking my creativity to new levels.

Must have for Midi Guitarists (Roland - GI-20)

By aswilliams, 07/08/2014
The GI-20 converts the 13 pin signal from a properly equipped guitar into midi data to be sent to a sound module, computer, or similar midi device.

The inputs/outputs are as follows:

-13 pin input
-Midi In and Out
-Foot SW input
-EXP Pedal Input
-Guitar output (for normal guitar signal)
-USB Midi
-DC In


Everything can be accessed and edited from the front panel with the provided knobs and buttons. I was originally disappointed that there was no software editor from Roland, but after finding a 3rd party editor I realized that I was still using the front panel more because it was so simple.

The drivers are working on my Windows 8 PC no problem. I have also used the GI-20 with a Mac G5, Windows XP, Windows Vista, and Windows 7.

I haven't had to use the manual because there is a chart showing you all of the options printed on top of the unit.


You won't have to put much effort into understanding how the GI-20 works. There is a "Play Mode" for using your settings, and a knob that can turn to different options for programming. You can adjust Guitar Sensitivity, Play Feel, Control Assign, Program Change, Bend Range, Transposition, String Mute, and Midi Channel all from the front of the unit.


This is an amazing little unit, and I am sad that Roland has not continued developing these rack-mount GK/midi converters. I assume it is because there is not a huge market for them.

You can program every little aspect of what the strings of your guitar and the knobs and buttons on your 13 pin pickup will do. The options give you complete control over your setup. There are 50 user slots to store your settings in, and that includes program changes that you can assign to midi programs in your external hardware. This is nice because if you want a certain setup for a violin sound, such as a slow attack and fast release, you can assign that to always show up with that patch. Then you can change programs to have your settings match a piano sound better. (NOTE the GI-20 produces no sounds).

Sadly the limit of user programs is 50, and there are many more sounds I would like to program in this unit.

There is a useful on-board tuner that is one of the most accurate I've used, most likely due to the individual signals it receives from the strings.

The unit also works with GK equipped Bass guitars, though I have not tested this.

There is very low latency when using this, which is rare for midi guitar converters.

I previously owned the GR 20 and GR 55 midi guitar boards, and these don't even come close to the GI 20. If you are a midi guitarist, get one of these used NOW because they will be hard to find the longer you wait.

I am considering picking up 3 or 4 more just to keep around in case mine fails, because Roland will likely never make something like this again.

News Audio/MIDI Converter

Kenton Modular Solo

Published on 11/21/11
Kenton Electronics announces the availability of Modular Solo, a MIDI-to-CV convertor, designed specifically for use in the ‘small’ Eurorack (A100) modular synth system format.

Roland GR-55 Guitar Synthesizer

Published on 03/11/11

[NAMM] GR-55 Guitar Synthesizer

Published on 01/14/11

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