Boss RT-20 Rotary Speaker Sound Processor
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The RT-20 creates a new standard for rotary speaker simulation.
Guitar legends from Santana to the Beatles have incorporated the rotary speaker into their music. BOSS kept this in mind when creating the RT-20, and by employing their COSM modeling technology, it reproduces classic rotary sounds just like the originals. Adjustable Rise Time, Horn and Bass speed, Overdrive, and more. Not just for the classic swirl, the RT-20 can create unique overdrive and pulsating effects as well. Amazing sound plus a stunning graphical view of the virtual rotors in its display.
Features
- Authentic rotary speaker sounds via COSM technology
- Slow/Fast transition time is adjustable from gradual to rapid change; optional expression pedal can control speed in real time
- Onboard overdrive effects
- Adjustable mix balance between Treble Rotor and Bass Rotor
- 4 types of sounds, from standard rotary speaker effects to rock-oriented tones, UNI-V, and more
- Guitar/Keyboard switch
- Dazzling virtual-rotor display
Take advantage of the RT-20's COSM technology to get the classic rotary sound you want. Call or click to order now!
Review Snapshot®
by PowerReviews(based on 29 reviews)
Ratings Distribution
67%
of respondents would recommend this to a friend.
Most Liked Positive Review
Boss RT-20
owned rt-20 for 6 months, using it in stereo for guitar application. I'va added EQ to the front of the RT-20 to boost 600hz and 1200hz. Lets you voice chords across the...Read complete review
owned rt-20 for 6 months, using it in stereo for guitar application. I'va added EQ to the front of the RT-20 to boost 600hz and 1200hz. Lets you voice chords across the horn / rotor crossover. If you are lookin for SRV Coldshot this is likely not the pedal for you. If you know what a leslie can do, man this is the s**t. Working the footswitch to take advantage of the interial effect can liven up your playing big time. This nuance is the strengeth of a leslie IMO, The effect has a bit of a gritty edge to it. The magic is accomplished by voicing your notes chords and appropriately changing timing speed changes. The youtube demos do not do this pedal justice. You need to be playing and tapping the tremolo chorale speeds with your feet not your fingers.
VS
Most Liked Negative Review
Very Expensive Phase Shifter
First of all I OWN a Leslie 145, so I have a benchmark for the sound of Leslie guitar. After waiting a long time for two of these pedals, I must register my disappointment...Read complete review
First of all I OWN a Leslie 145, so I have a benchmark for the sound of Leslie guitar. After waiting a long time for two of these pedals, I must register my disappointment in the audio and sonic quality of this pedal for guitar. The real Leslie sound is truly rooted in the horn aspect of the sound for guitar which is a very nasally midrange to high curve with almost the "Q" of a half-depressed wah pedal. The RT-20 fully misses this true characteristic and really sounds dull compared to many other Leslie simulators both old and new. With the "Balance" control set to full "Horn" the treble is bland and lacks the humped frquency response of the actual Leslie horn. There is always too much distortion even with the "Overdrive" in the"off" setting and the mode set to "I" with both single coils and humbuckers when using this pedal. I was hoping to achieve the classic "Badge" sound or something like Leslie West on "Nantucket Sleighride" but no such luck. Just a swishy, ill-defined phase sound that none of the four amps I tried could resolve any better. The Uni-Vibe setting was muddy and also ill-defined, not even as good as the Boss Modeling Wah pedal(PW-10). The RT-20 sounds more like a very sophisticated phase shifter rather than a rotary simulator. The current Line 6 Roto-Machine is far better at making the classic Leslie sounds for guitar--especially when used on the "145" setting.
Reviews
Reviewed by 29 customers
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Displaying reviews 1-10
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Pros
- Compact Design
- East To Use
- Excellent Sound Quality
- Versatile
Cons
- None
Best Uses
- Home Studio
- Performances
- Professional Recording
Comments about Boss RT-20 Rotary Speaker Sound Processor:
I had a Leslie years ago that was modified for guitar. I always loved the effect. I have tried many units to achieve that sound again but it just wasn't the same. This pedal is as close as I have come and I couldn't be more pleased. Being able to adjust the balance of the horn and bass baffle is a really nice touch. The UniVibe effect is a real bonus. This pedal is dangerously close to the real thing and sure beats hauling the real thing around (not to mention all the mics you need). Try one.
Pros
- Excellent Sound Quality
- Responsive
- Versatile
Cons
Best Uses
- Amateur Recording
- Home Studio
- Performances
- Professional Recording
Comments about Boss RT-20 Rotary Speaker Sound Processor:
Lots of versatility with this effect. Dial in the kind of edge you want, low or high distinction and guitar or keyboard selection. If you can get the real thing get it but if you can't lug a leslie around and you want the effect this is it. Great visual that lets you see the rotation speed and great adjustable braking that makes that rise and fall excitement we all love. I have been a professional studio musician for 40 years and I would highly recommend this unit. I only gave it 4 stars because it is in fact not a leslie.
Pros
Cons
Best Uses
Comments about Boss RT-20 Rotary Speaker Sound Processor:
For anyone who is using the unit for a keyboard, it will not really do much good if your keyboard already has the capabilities of doing its own reverb and chorus.
Comments about Boss RT-20 Rotary Speaker Sound Processor:
Always wanted those sounds but didn't want to buy 5 or 6 separate pedals. This thing is AWESOME. Wouldn't trade it for anything, except an actual Lezlie cab.
Comments about Boss RT-20 Rotary Speaker Sound Processor:
You can't get any closer to the Leslie sound without actually having a Leslie. The only thing I wish it did differently is to switch instantly from low to high rotation, instead of speed up and slow down. Then again, maybe an expression pedal might do the trick.
Hi and Lo rotors
No problems whatsoever, love the tone.
I could never afford, or transport, a Leslie. This pedal does what I want it to, at a much cheaper price and smaller size and weight!
Comments about Boss RT-20 Rotary Speaker Sound Processor:
Never written a review in my life, but I am so impressed with the Boss RT20 I just had to. Been researching leslie sims for awhile now to use with organ. DLS,H&K,NEO, you name it. Neo ventilator very good but no better then the RT20. And what a wad of cash to save. It was a no brainer for me. Oh yeah it's got pretty lights. The ramp speed is very authentic. Great sampling of bass speaker and horn.
Comments about Boss RT-20 Rotary Speaker Sound Processor:
this pedal sooud good.
Comments about Boss RT-20 Rotary Speaker Sound Processor:
I bought one of these used and liked it SO MUCH, I immediately bought another one to replace the Tube Rotosphere in my keyboard rig. The secret is getting the speed/settings right.I took my portable organ and the Boss RT-20 pedal to the church where I play a REAL Hammond C3 and Leslie 145 and matched the speeds and point of natural distortion. I use a Roland Blues Driver in front of this pedal to get those "over the top" distorted rock organ sounds. This thing is the BOMB!
Comments about Boss RT-20 Rotary Speaker Sound Processor:
I've been using the RT-20 for about 5 years now and not only does it really sound like a Leslie, it never quits! I've played gigs under various conditions including very HOT outdoor gigs with no problems. I have had ZERO problems with it and it took me 1 minute to set it to get exactly the sound I want (unlike other modeling devices that require a PHD to configure). Obviously it weighs a LOT less than a real Leslie and smaller too.
Comments about Boss RT-20 Rotary Speaker Sound Processor:
owned rt-20 for 6 months, using it in stereo for guitar application. I'va added EQ to the front of the RT-20 to boost 600hz and 1200hz. Lets you voice chords across the horn / rotor crossover. If you are lookin for SRV Coldshot this is likely not the pedal for you. If you know what a leslie can do, man this is the s**t. Working the footswitch to take advantage of the interial effect can liven up your playing big time. This nuance is the strengeth of a leslie IMO, The effect has a bit of a gritty edge to it. The magic is accomplished by voicing your notes chords and appropriately changing timing speed changes. The youtube demos do not do this pedal justice. You need to be playing and tapping the tremolo chorale speeds with your feet not your fingers.
