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Boss RT-20Item ID: RT20COSM-modeled Rotary Speaker Emulation Pedal with Overdrive Effects 
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From Our Research Team:The New Standard in Rotary Speaker Simulation!From the Beatles to Jeff Beck, Santana to Stevie Ray Vaughan, many guitar greats have embraced the rotary speaker sound onstage and in the studio. BOSS proudly announces the newest member of its Twin Pedal series - the RT-20 Rotary Sound Processor. Employing COSM modeling technology, the RT-20 authentically reproduces classic rotary-speaker sounds. It offers adjustable Rise Time, Horn and Bass seed, Overdrive, and more. And not just for classic twirl, the BOSS RT-20 can be used to create unique overdrive and pulsating effects as well. This pedal sounds amazing, and offers a stunning graphical view of the virtual rotors on its built-in display.Click for Video & Audio Demos:
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BOSS RT-20 Rotary Sound Processor at a Glance:
Classic rotary speaker sounds using COSM technology Years of intensive research and development have made Roland and BOSS world leaders in modeling technology. Roland's breakthrough Composite Object Sound Modeling (COSM) uses the advantages of multiple modeling methods, and succeeds in accurately emulating existing sounds as well as producing sounds that have never before been created. With the BOSS RT-20, COSM is used to simulate classic rotary characteristics, and beyond. The virtual horn and bass speaker can be independently adjusted, while the BOSS RT-20's unique graphic display provides a realtime view of the rotation pattern and speed. Easy to connect both guitars and keyboards Guitars and keyboards alike can be plugged into the Easy to connect both guitars and keyboards. Use the Drive Type switch to optimize the effects for guitar or keyboard. Surround your listeners in animated sound with the RT-20's dual outputs, which enable true stereo effects. Add color by adding an expression pedal (such as the new BOSS FV-500H/FV-500L, optional), which lets you control parameters such as rotation speed seamlessly from slow to fast in real time. The BOSS RT-20's phone jack is handy for private practice and experimentation. Stunning virtual rotor display Thanks to its stunning visual display, the BOSS RT-20 might be the most eye-catching pedal in BOSS history. The spinning lights don't just look cool, they also show the audio-rotation characteristics of the RT-20 in real time. The center of the display, illuminated in red light, represents the virtual horn. The outside ring, illuminated in blue, displays the rotation of the virtual bass speaker. It's attractive while also being informative! BOSS RT-20 Rotary Sound Processor Features:
Take your guitar or keyboard for a spin with the BOSS RT-20 Rotary Sound Processor! RT-20 Image Gallery
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Reviewsbased on 5 reviewsBoss RT-20
by Rob Kegley from NC
The unit is built like a tank and does exactly what I want for guitar. While not 100% on the tones it is as close to perfect as I have found, and weighs next to nothing - after moving B3s for years th... read more [+]is little 'Leslie in a box' was amazing. It has become one of the central effects in my recording rig. close [-]
September 7, 2010 Music Background: pro musician LOve it
by cl from Sparks NV
Great little unit... makes my Juno G bar board sound like a much better rig. Only complaint is the1/4" jacks don't hold very well (ok... to be fair, they don't hold when I accidentally kick the dam... read more [+] thing). A bit of Velcro solves the problem nicely tho. close [-]
February 8, 2010 Music Background: Pro musician / hack Boss RT-20 Rotary
by John from Green Bay, Wisconsin USA
EXCELLENT!!! Didn't get a 5 because it does not have an on/off switch (only goes off when unpluged). Use it all the time playing out with my Technics SX-KN 3000 (I get that great Hammond/Leslie comb... read more [+]o sound). close [-]
May 1, 2009 Music Background: Part time musician. Keyboard and guitar. Boss RT20 is "BOSS"
by Guy Linder from Chattanooga, Tenn.
This little box didn't get a 5.0 WOW rating because all it lacks is being installed in Hammond unit - it is by the closest simulator to the real thing i've found yet - i have played and owned Hammond ... read more [+]B3's and C3's since i was fifteen (trust me, its been quite a few years) and outside of not being in a leslie cabinet and watching the horns and drum spin, you could close your eyes and be fooled - not a pro or manufacturer, but on a stage if you placed this unit in a cabinet and amped it all out,,,,,it would be "BOSS" - thanks alot for making an ole friend of the B3 happy on a retired budget - close [-]
September 13, 2008 Music Background: Guitar and bass - 43 yrs.- Keyboards (all) 40 yrs. - Proud to say all Gospel Boss RT-20 First Impressions
by Scott from Omaha NE
This pedal was just what I was looking for. I was at a local guitar store a few weeks ago and asked the guy if they had a Leslie type effect that had a pedal that could change the tremelo speed as I ... read more [+]was playing. He just looked at me like I was crazy and said no. I started hunting around on the internet and found the RT-20. The Boss RT-20 webpage had a demonstration video that clinched it for me. It looked like it had just the type of sound and control that would realize my Beatlesque guitar fantasies. August 20, 2008 Music Background: Been playing since 1973 I got it from Sweetwater today and have been having fun with it. It nails the sound of the opening lick from Ringo Starr's 'It Don't Come Easy'. You know that iconic single picked line where the rotor speed ramps up for the last few notes. That was the first thing that came to mind when I tried to think of classic guitar licks that I could try out with the RT-20. I read the manual on line before I got the pedal so I already knew about the features and how I should set it up. It seems to sound best in the effects loop of my amp. Unless my amp settings are very clean it loses it's vibe when it's connected straight into the amp's input jack. I use a Tech21 Trademark 60. So far I'm more than pleased with the RT-20. I can't remember being so excited about a guitar effect since I got my first Vox wah from my guitar teacher when I was kid back in the early 70's. Sweetwater has been very cool too. They called me at home to tell me they were shipping my order and even put some candy in the box with the pedal! This pedal is a miracle for guys like me that could never afford a Leslie but love the sound. It really seems amazing when I think of the kind of effects that were available for the average joe guitar player when I was just getting started with the electric guitar. The RT-20 has really been a sonic dream come true for me. close [-] Also popular
Boss RT-20
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