Overall, a good value...with a learning curve
I have owned Line-6, Berhinger and Boss MFX products in the past. I would put this somewhere between Line 6 and Boss for simplicity.
I like the fact that it has a stomp box mode. Tap one switch and you have 5 stomp boxes plus a volume and wah at your disposal. Tap it again and it's a full-featured switching unit.
I won't go into the individual effects as you can download the manual from Digitech's website. I will instead focus on usability and functionality with a lesser focus on sound of each effect.
The first thing I noted was was the pedal board mode. I previously had a Boss ME-70 and liked the stomp box/pedal board mode. You have 5 switches/effects that can all be tweaked to your tasted. The expression pedal can be programmed for a number of effects, from a "Whammy" pedal to a wah. It can also be programmed to control any parameter of any effect, such as the reverb level for passages of a song that need to be dry.
The difference between this pedal and the Boss ME-70/ME-80 is the tweakability. The Boss products have 2-3 knobs for each effect, similar to what a real stompbox would have. You grab and twist and you're done. The RP500 is much more complex. You have to use the edit buttons to select the row of the effect you want to adjust then use the row of knobs at the bottom of the matirx to adjust the various parameters. Depending on the effect, the number of knobs that have any control will vary. This brings me to my next gripe; the matrix is small and can be hard to read so deciphering the row and column you are controlling can be tricky. I'm an old geezer and need reading glasses.
In this way, the RP-500 is more tweakable than the Boss product. Each parameter has a huge range with a high resolution. For example, the reverb level, rather than going from 0-10 or 0-9 actual goes from 0-99 giving the abililty to really fine tune a parameter. To sweep through the entire range can take 6-10 turns of the knob, (I haven't actually counted). The Boss product on the other hand goes from 7 O'Clock through 5 O'clock, like a conventional knob, give less tweakability. But, it also makes it a little tougher to zero in on a setting because the changes are so minute.
In the "patch mode" or "switching" mode, you have 100 factory presets as well as 100 user presets. When new or after a factory preset, the user presets have the same settings as the factory presets. Like most MFX units. the factory presets are always set up to "showcase" the unit's cabability making them somewhat extreme. For instance, the Plexi preset is horrible. I'm not sure what they were shooting for because it sounds nothing a Plexi. The remedy for this is to copy the patch to a user location then tweak to taste.
Another "mode" this unit, that is always available isn't really a mode but just a way to quickly dial up some sounds. When not in edit mode, you can simply grab the first knob on the left and twist it and it runs through a list of "tones" from the tone library. They are combinations of amps, cabinets and various settings and they are independent of the unit's 100 presets. Once you find a tone you like you can then grab the second knob. This is the effects knob in this mode. It will run through a slew of effects chains containing anywhere from one to several effects. When you find something you like you can save it to a user slot then tweak it.
The overall build of the unit is pretty solid. Not much plastic here. The expression pedal has a solid feel to it. There is a switch built into the toe-down position of the pedal to turn the wah or other effect on and off. Out of the box, it's extrememely sensitive and will need to be adjusted. I think it was was around 90 and I had to bump it up to about 115 to make it less sensitive.
I installed the X-Edit software and the drivers. Initially, my computer wouldn't detect the unit although the drivers installed properly and it was showing up properly in the device manager. I had to power-off the unit then power it back on. Even then, I found connectivity hit and miss. I kept having to unplug the USB cable and plug it back in to get my computer to recognize it, but once it recognized it, it seemed to stay connected. I'm running Windows 7. The unit was shipped with version 1.2 of the firmware and I updated it to 1.4. I had heard that version 2.0, which add's a looper, would whack the harmonizer and I have more use for the harmonizer than I do the looper.
Again, the complexity of the unit is much more complex than a Boss ME-70/ME-80 yet simpler that a Line 6 POD product. Whereas with the Boss unit, you can pretty much plug it in and figure it out, with this unit, you will want to spend a little time getting familiar with it.
I believe some great sounds can be achieved with this unit. There are some digital artifacts with some effects but in the context of a mix, I don't believe they'll be noticable.
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