The Dedalo Fx Revolver RVO-3 is an analog pedal that combines an overdrive and a booster in a single enclosure, built around what the maker describes as a careful combination of MOSFET stages. The two sides work independently or together, and a Master control sets the overall output when both are engaged at once1. Pedal of the Day reviewed it in March 2017 as a pedal that puts two effects in one pedalboard-friendly enclosure1.
What it does
RockBoard's PedalPedia describes the Revolver as delivering "that classic rock and roll tone, with perfect versatility for rhythm guitar, leads and riffs in just one pedal," thanks to a careful combination of MOSFET stages and the independent booster with input and master gain2. Pedal of the Day's reviewer found the two effects "working excellently on their own, and sounding just phenomenal when in tandem"1.
The controls: Booster, Overdrive and Master
The Revolver's two sides each have their own controls, plus a Master that comes into play when both are running21.
| Side | Control | What it does |
|---|---|---|
| Overdrive | Drive | Sets the amount of overdrive1 |
| Overdrive | Treble | Adjusts the tone of the dirt effect, with a great range that does not get too muddy when turned down1 |
| Overdrive | Level | Output control for the overdrive side1 |
| Booster | Gain | Simple gain control, only in use when the Booster side is active1 |
| Both | Master | Sets the output of the Revolver when both sides are engaged at once1 |
The booster is described by RockBoard's PedalPedia as an independent booster with input and master gain2. On the Master control, Pedal of the Day wrote that it sets the output of the Revolver when both sides are engaged at once, "allowing for perfect volume control within all aspects of the drive and boost functions"1.
Size and power
The RVO-3 runs on 9V DC, center negative, and draws 10mA, according to RockBoard's PedalPedia's product listing2. Pedal of the Day noted the size is just right, not taking up much more space than a typical Boss-sized effect, which makes it easy to fit on a board1. An English manual for the pedal is available from Dedalo2.
What reviewers said
Pedal of the Day's 2017 review was favorable on both counts that matter for a two-in-one pedal: the sides work well apart and better together1.
"working excellently on their own, and sounding just phenomenal when in tandem"
The reviewer also praised the Treble control's range and the pedal's compact footprint1.
Videos
dedalofx
Lucas Moser
Pedal of the Day
Questions
Can the Dedalo Revolver RVO-3 run the overdrive and booster at the same time?
Yes. The Revolver RVO-3 combines an overdrive and an independent booster, and both sides can be engaged at once. When they are, a Master knob sets the overall output of the pedal, which Pedal of the Day's reviewer described as allowing for perfect volume control within all aspects of the drive and boost functions. Each side also works on its own.
What does the Master control do on the Revolver RVO-3?
The Master knob sets the output of the Revolver when both the overdrive and booster sides are engaged at once. It lets you balance the combined volume of the drive and boost functions. The overdrive side has its own Level control for when the booster is not in use.
How much boost does the Revolver RVO-3 booster give?
The booster side of the Revolver RVO-3 provides up to +20dB of gain, according to Pedal of the Day's 2017 review. The reviewer noted that this is enough to drive a tube amp with ease, and the booster has its own Gain control that is only in use when the booster side is active.
What power does the Dedalo RVO-3 need?
The Revolver RVO-3 runs on 9V DC, center negative, and draws 10mA of current, according to Dedalo's product listing on RockBoard's PedalPedia. That low draw makes it straightforward to fit into most pedalboard power setups.
Is the Revolver RVO-3 analog?
Yes. Dedalo's product listing on RockBoard's PedalPedia gives the circuit type as analog. The pedal uses a combination of MOSFET stages, which the maker credits for its classic rock and roll tone.
Sources (2)
- Dedalo FX Revolver RVO-3 Overdrive Booster, Pedal of the Day, 2017-03-15
- Revolver RVO-3 by Dedalo FX, RockBoard PedalPedia, 2026
