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Boss RT-20 Rotary Ensemble Sound Processor

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From the Beatles to Jeff Beck, Santana to Stevie Ray, many guitar greats have incorporated the rotary speaker into their rigs. With this in mind BOSS...Click To Read More About This Product

Available 10-23-2017

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OVERVIEW

An easy-to-use and versatile rotary speaker effect.

From the Beatles to Jeff Beck, Santana to Stevie Ray, many guitar greats have incorporated the rotary speaker into their rigs. With this in mind BOSS proudly presents 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 speed, Overdrive, and more. And not just for classic twirl, the 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.

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

Get the classic rotary sound you want. Call or click to order now!

SPECIFICATIONS
  • Nominal Input Level: -20 dBu
  • Input Impedance: 1 M ohms
  • Output Impedance: 1 k ohms
  • Recommended Load Impedance: 10 k ohms
  • Display: VIRTUAL ROTOR
  • Controls: EFFECT ON/OFF pedal, SLOW/FAST pedal, MODE knob, RISE TIME knob, EFFECT LEVEL knob, DIRECT LEVEL knob, BALANCE knob, OVERDRIVE knob, SLOW SPEED knob, FAST SPEED knob, DRIVE TYPE switch
  • Indicators: POWER(serves also as battery check indicator), EFFECT ON/OFF, SLOW/FAST
  • Connectors: INPUT A (MONO) jack (1/4 inch phone type), INPUT B jack (1/4 inch phone type), SPEED (EXP PEDAL) jack (1/4 inch phone type), PHONES jack (stereo 1/4 inch phone type), OUTPUT A (MONO) jack (1/4 inch phone, type), OUTPUT B jack (1/4 inch phone type), AC Adaptor jack
  • Power: DC 9 V=Dry battery (R6/LR6 (AA) type) x 6, AC Adaptor (PSA-series)
  • Accessories: Owner's Manual, Dry battery x
  • Dimensions: W 6-13/16" x D 6-1/4" x H 2-1/4"
  • Weight: 2 lb. 7 oz.
Reviews
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Review Snapshot

by PowerReviews
BossRT-20 Rotary Ensemble Sound Processor
 
4.7

(based on 37 reviews)

Ratings Distribution

  • 5 Stars

     

    (31)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (2)

  • 1 Stars

     

    (0)

91%

of respondents would recommend this to a friend.

Pros

  • Excellent sound quality (9)
  • Versatile (9)
  • Responsive (8)
  • Good selection of effects (7)
  • Compact (5)

Cons

No Cons

Best Uses

  • Performances (10)
  • Home studio (8)
  • Professional recording (7)
  • Amateur recording (6)
  • Outdoor events / games (5)
    • Reviewer Profile:
    • Experienced (7), Professional musician (4)

Most Liked Positive Review

 

WOW!

I have always loved the sound of a Leslie. Whether we are talking about a Hammond B-3 or or a Fender Strat, an instrument just sounds more soulful and etherial when played through...Read complete review

I have always loved the sound of a Leslie. Whether we are talking about a Hammond B-3 or or a Fender Strat, an instrument just sounds more soulful and etherial when played through a rotating speaker system. For years, I tried to approximate this sound by using different combinations of flanger, chorus, phaser and tremolo effects. And, while I would often be able to dial in some cool tones, I always ended up with something that, at best, sounded "Leslie-esque" but clearly not like the real deal. The RT-20 gets me as close to the "real deal" as I will probably ever need.

When you think about how hard it is accurately simulate a complex electromechanical device like a Leslie and shrink it down to the weight and size of an effects pedal, it is pretty amazing how close this pedal sounds to the real thing. I know purists will argue that the RT-20 can't capture some of the more subtle sonic qualities of a real Leslie-I don't think ANY simulator can because it is physically impossible. That said, I know which device I'd rather lug to practice sessions and gigs!

I haven't tried the other rotary sims out there, including the Strymon Lex or the H&K Rotosphere. Could they be even better than the RT-20? Maybe. Depending on who you ask, the RT-20 is either superior, equal or inferior to those and other units. All I know is that the RT-20 gives me the sound and features I've always wanted and I am totally satisfied with the Leslie settings on this pedal.

The Uni-Vibe setting has gotten mixed reviews, with some people dismissing it as "fake" sounding and others describing it as authentic and useful. I think that Boss did a really good job of modeling a Uni-Vibe. You can dial in some pretty convincing tones by adjusting the rate and intensity controls. If you are really particular about Uni-Vibe tone, I would go for a unit that uses actual bulbs, photocells and staggered phasing stages like the original. Also, with both the Leslie and Uni-V settings, I have found that both sound MUCH better when using an overdrive or distortion pedal AFTER the RT-20. The built in overdrive is only useful at lower settings and I prefer to use a seperate OD anyway.

I have been playing guitar for over 25 years and I have to say that the RT-20 is at the top of my list of favorite effects pedals. If you dig the Leslie sound, you owe it to yourself to check it out.

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...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.

Reviewed by 37 customers

Displaying reviews 1-20

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(5 of 7 customers found this review helpful)

 
4.0

Best thing next to a leslie

By DIEGO

from Fort Worth

About Me Professional Musician

Verified Buyer

Pros

  • Excellent Sound Quality
  • Responsive
  • Versatile

Cons

    Best Uses

    • Amateur Recording
    • Home Studio
    • Performances
    • Professional Recording

    Comments about Boss RT-20 Rotary Ensemble 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.

    (5 of 5 customers found this review helpful)

     
    5.0

    THE best rotor simulator out there

    By Doug Lanier

    from Savannah, GA

    See all my reviews

    Comments about Boss RT-20 Rotary Ensemble 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!

    (5 of 5 customers found this review helpful)

     
    5.0

    Awesome!

    By Dianna A.

    from Atlanta, GA

    See all my reviews

    Comments about Boss RT-20 Rotary Ensemble 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!

    (5 of 5 customers found this review helpful)

     
    5.0

    Boss RT-20

    By Cgiff

    from Picton,On

    Comments about Boss RT-20 Rotary Ensemble 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.

    (5 of 5 customers found this review helpful)

     
    5.0

    IMHO the best Leslie Simulator

    By Bucky Duster-.W3TL

    from Baltimore, MD (Music City MD)

    See all my reviews

    Comments about Boss RT-20 Rotary Ensemble 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.

    (4 of 4 customers found this review helpful)

     
    5.0

    WOW

    By jlsrsvl

    from atkins, ar

    See all my reviews

    Ask me a question

    Comments about Boss RT-20 Rotary Ensemble 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.

    (3 of 3 customers found this review helpful)

     
    4.0

    Great

    By Jimo slice

    from under the freeway overpass

    About Me Experienced

    See all my reviews

    Verified Buyer

    Pros

    • Compact Design
    • Excellent Sound Quality
    • Good Selection Of Effects
    • Responsive
    • Versatile

    Cons

      Best Uses

      • Amateur Recording
      • Events
      • Home Studio
      • Performances
      • Professional Recording

      Comments about Boss RT-20 Rotary Ensemble Sound Processor:

      Yoooo

      Works just like you would think. I found that i leave mine on the slow setting 90% of the time. It seems to thicken the tone and adds almost a phaser effect. I got it thinking i would use the fast feature more but the slow speed is just a good ole baseline sound to build from. Adding other pedals with it gets overwhelming fast but i found it takes the place of things like delay and overdrive if you tweak it right. The only true downside is that the gain is OOC, anything past level 3 sounds like a blown sub in a VW bug, just awful. However the 0-3 sweep can be useful. Not a perfect repo of a RT but close enough, especcaly in a band setting it gets the point across just fine. (works in stereo also).

      Overall, it has a great sound, easy to use, get one.

      (3 of 3 customers found this review helpful)

       
      5.0

      WOW!

      By Tubehed

      from Westminster, CA

      About Me Experienced

      See all my reviews

      Ask me a question

      Pros

      • Compact Design
      • Excellent Sound Quality
      • Good Selection Of Effects
      • Responsive
      • Versatile

      Cons

        Best Uses

        • Amateur Recording
        • Events
        • Home Studio
        • Performances
        • Professional Recording

        Comments about Boss RT-20 Rotary Ensemble Sound Processor:

        I have always loved the sound of a Leslie. Whether we are talking about a Hammond B-3 or or a Fender Strat, an instrument just sounds more soulful and etherial when played through a rotating speaker system. For years, I tried to approximate this sound by using different combinations of flanger, chorus, phaser and tremolo effects. And, while I would often be able to dial in some cool tones, I always ended up with something that, at best, sounded "Leslie-esque" but clearly not like the real deal. The RT-20 gets me as close to the "real deal" as I will probably ever need.

        When you think about how hard it is accurately simulate a complex electromechanical device like a Leslie and shrink it down to the weight and size of an effects pedal, it is pretty amazing how close this pedal sounds to the real thing. I know purists will argue that the RT-20 can't capture some of the more subtle sonic qualities of a real Leslie-I don't think ANY simulator can because it is physically impossible. That said, I know which device I'd rather lug to practice sessions and gigs!

        I haven't tried the other rotary sims out there, including the Strymon Lex or the H&K Rotosphere. Could they be even better than the RT-20? Maybe. Depending on who you ask, the RT-20 is either superior, equal or inferior to those and other units. All I know is that the RT-20 gives me the sound and features I've always wanted and I am totally satisfied with the Leslie settings on this pedal.

        The Uni-Vibe setting has gotten mixed reviews, with some people dismissing it as "fake" sounding and others describing it as authentic and useful. I think that Boss did a really good job of modeling a Uni-Vibe. You can dial in some pretty convincing tones by adjusting the rate and intensity controls. If you are really particular about Uni-Vibe tone, I would go for a unit that uses actual bulbs, photocells and staggered phasing stages like the original. Also, with both the Leslie and Uni-V settings, I have found that both sound MUCH better when using an overdrive or distortion pedal AFTER the RT-20. The built in overdrive is only useful at lower settings and I prefer to use a seperate OD anyway.

        I have been playing guitar for over 25 years and I have to say that the RT-20 is at the top of my list of favorite effects pedals. If you dig the Leslie sound, you owe it to yourself to check it out.

        (3 of 3 customers found this review helpful)

         
        5.0

        Close to the Real Thing

        By griff

        from Arkansas

        About Me Professional Musician

        See all my reviews

        Ask me a question

        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 Ensemble 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.

        (3 of 4 customers found this review helpful)

         
        5.0

        B3 in a Boss box

        By jaleke2000

        from Macon, Georgia

        Comments about Boss RT-20 Rotary Ensemble 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.

        (2 of 2 customers found this review helpful)

         
        5.0

        Best Bang-For-Your-Buck Leslie Simulator

        By Screamin' Armadillo

        from TEXAS

        About Me Experienced

        See all my reviews

        Pros

        • Accurate Simulation
        • Adjustable Parameters
        • Light Show
        • Sturdy

        Cons

        • Distortion Effect

        Best Uses

        • Amateur Recording
        • Atmospheric Vocals
        • Guitar
        • Keyboard
        • Performances
        • Professional Recording

        Comments about Boss RT-20 Rotary Ensemble Sound Processor:

        Inspired by the sweet funky lead guitar tones of the Arc Angels song "Good Time", I started a quest for a good Leslie simulator that took me almost 15 years to complete.
        I tried (and even bought) several effects over the years, but found all of them extremely lacking in one way or another.
        When I found the Boss RT20, I was impressed by (1) the overall warmth and tone, (2) the ability to adjust the level(s) of the Horn and Rotor, as well as inject more of the Dry signal if need be, and (3) the low noise threshhold.
        The various Modes (I, II, III, IV) are useful due to how different rooms affect your tone; a bouncy, bright room worked better with Mode II. A dark, "dead" room worked better with Mode I, etc. (your results may vary).
        The "Brake" function works great, very close to the actual brake action of a real Leslie (I like how it ramps up and dow, and has a control of how fast that ramping is).

        I have dialed in reasonable sonic facsimiles of SRV's "Cold Shot", Clapton's "Badge", Harrison's "Let It Be" and Jimmie Vaughan's "Tear It Up" and "Tip On In" tones...as well as my own "Travis County Line" and "I Love You (But Yo Momma's Gotta Go)"

        A multi-instrumentalist (drummer/guitarist/keyboardist/bassist/singer/producer) within our group has used the pedal with his lower-end Yamaha keyboard, and got great results; after mixing the song, you would think there is an acual Hammond B-3 or C-3 in the band.

        Some people have criticized the Uni-Vibe setting; I'll admit it isn't perfect, but I've heard much, much worse. (Although, I admit I'm not much of a Uni-Vibe user, so take my non-criticism with a grain of salt).
        I personally like the spinning light show--it allows you to "see" the speed of the settings.
        The only criticism: The distortion effect should never, ever, ever be turned on. It turns the entire effect into a steaming pile of elephant droppings. It's not even a "good" bad.

        There are perhaps better Leslie effects out there (I've played through the Strymon and was suitably impressed), but for the money, this one is definitely a keeper.

        Is this as good as a real Leslie 122 or 145 or Vibratone?
        Probably not, but this costs and weighs significantly less--especially considering how I normally only use this effect for two to three songs throughout the performance.
        The final cherry on top of the sundae: The lovely Lady Armadillo bought this pedal for me for our wedding anniversary.

        (2 of 12 customers found this review helpful)

         
        5.0

        guiterman40

        By guiterman40

        from gainesville fl

        Comments about Boss RT-20 Rotary Ensemble Sound Processor:

        this pedal sooud good.

        (2 of 3 customers found this review helpful)

         
        2.0

        Very Expensive Phase Shifter

        By Rhipper

        from New York, NY

        Comments about Boss RT-20 Rotary Ensemble Sound Processor:

        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.

        (1 of 1 customers found this review helpful)

         
        5.0

        This is by far the best and most versatile guitar pedal.

        By None

        from Virtginia

        About Me Experienced

        See all my reviews

        Verified Buyer

        Pros

        • Excellent Sound Quality
        • Good Selection Of Effects
        • Responsive
        • Versatile

        Cons

          Best Uses

          • Amateur Recording
          • Events
          • Home Studio
          • Performances

          Comments about Boss RT-20 Rotary Ensemble Sound Processor:

          I plan on using this pedal both on stage and also for recording.

          (1 of 1 customers found this review helpful)

           
          5.0

          When Motion Sound broke down...

          By "Detroit" Mike

          from Las Vegas NV

          About Me Professional Musician

          Pros

          • Compact Design
          • Excellent Sound Quality
          • Good Selection Of Effects
          • Responsive
          • Versatile

          Cons

            Best Uses

            • Events
            • Home Studio
            • Performances
            • Professional Recording

            Comments about Boss RT-20 Rotary Ensemble Sound Processor:

            I have used a Motion Sound Pro T3 with my Korg CX-3 organ for many years. Loved it! But finally it was going to cost more to fix than buying a RT-20.

            The Youtube videos showed that it could do a great job for keyboardists not just guitarists looking for a compact, inexpensive Leslie like effect.

            This unit has delivered that to me in spades! Did not expect a simulated rotary sound to replicate the rotary sound so well!

            Have used it in recording and live already! Great construction and love the visual rotary even more. The Motion Sound required me to look back to see if it was on fast. The RT-20, is at my feet and easy to get a visual on whether I am on fast or slow. For what I paid, I am amazed.

            (1 of 1 customers found this review helpful)

             
            4.0

            LOVE This!!!!

            By PentecostalHammond

            from Richmond, VA

            About Me Experienced

            Pros

            • Excellent Sound Quality
            • Good Selection Of Effects
            • Responsive
            • Versatile

            Cons

            • Exp Pedal Option Weak

            Best Uses

            • Hammond Organ
            • Performances

            Comments about Boss RT-20 Rotary Ensemble Sound Processor:

            Love this pedal! the speed options and the distortion work well... I use this in a small church where it's not much room for a leslie, and leslie's are costly. with a 1/4 out added to a C2 this pedal has experiened organist looking for a leslie. my omly issue that the exp pedal option does not gradually increase/decrease speed.

            (1 of 1 customers found this review helpful)

             
            5.0

            Love it!

            By Mickie

            from Sarver, PA

            About Me Professional Musician

            Verified Buyer

            Pros

            • Compact Design
            • Excellent Sound Quality
            • Good Selection Of Effects
            • Responsive
            • Versatile

            Cons

              Best Uses

              • Amateur Recording
              • Events
              • Home Studio
              • Mobile DJ
              • Performances
              • Professional Recording

              Comments about Boss RT-20 Rotary Ensemble Sound Processor:

              Best purchase I made in along time.

              (1 of 5 customers found this review helpful)

               
              3.0

              Was not impressed for my instruments

              By Splash

              from Bellefonte, PA

              About Me Experienced

              Verified Buyer

              Comments about Boss RT-20 Rotary Ensemble 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.

              (1 of 1 customers found this review helpful)

               
              5.0

              Leslie Heads Rejoice

              By Tonemah Guitarist

              from Lewiston, NY

              See all my reviews

              Comments about Boss RT-20 Rotary Ensemble Sound Processor:

              I've been on the hunt for a quality leslie simulator. I't kills me when people say "I have a real leslie and Blah blah blah. I love this pedal because it sounds great and it fits in my gear bag somethin a real cab wont. As a working and touring musician this is perfect. If I sat home all the time and played in my basement Id want the real thisng. The overdrive on this is a little over the top. I play it through a Fender tweed deluxe and a Ampeg RR212 and it rules, SRV style, Warren Hanes style Jimi style. The Univibe part sounds Trowery all day long. Great Great pedal.!!!!!!!!!!! I liked the Hughes at Kettner pedal but this is half the price with alot more adjustable paramaters and control over the sound with the RT 20

              (1 of 1 customers found this review helpful)

               
              5.0

              A Leslie in a Box

              By I love this pedal

              from Chicago, IL

              Comments about Boss RT-20 Rotary Ensemble Sound Processor:

              WOW!...I plugged this pedal in to my chain and there it was, That Uni-Vibe/rotary sound that I longed for. If you have ever heard a Leslie or played out of one you might know how unique that sound is, and Boss got it. I had just heard a Leslie, and played through it the day before I got this pedal in the mail. All there is to say is that its the same sound only more versatile. I have a delay/looper pedal(line 6),Boss EQ, small clone,big muff pi, 95Q wah, and now this. If you have a similar set up, like me you will have to switch some things around (to unexpected places), but it's worth it. If you have a lot of pedals I would recommend getting some longer angle-angle cables, like 3 feet, so you can put a wah on the far right without having to have that as you first pedal in your chain, if you know what I mean.(if your a right handed the wah is always easier to use if its on the far right, but that doesn't always mean it sounds best if you plug your instrument into it first. Try it were it sounds best in the chain,I say after distortion, chorus, and rotary but before delay/loop and EQ, then use longer cables to place it were it's most convenient, which for me is the far right.) So all in all it may make you switch your effects around but it's well worth it. The controls on this thing is amazing also. You really cant get much out of a Leslie but this has everything you ever could. The modes have different distortion and tremolo sound which is really great. It's your own custom Leslie.

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