Tech 21 Roto Choir Rotary Speaker Emulator Pedal

Rotary Speaker Emulation Guitar Pedal
Tech 21 Roto Choir Rotary Speaker Emulator Pedal image 1
Tech 21 Roto Choir Rotary Speaker Emulator Pedal image 1
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Available Tomorrow (June 28)
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Tech 21 Roto Choir Rotary Speaker Emulator Pedal
Available Tomorrow (June 28) Notify me

Rotary Speakers - the Easy Way

Wouldn't it be great if you could conjure up the celestial sounds of a vintage rotary speaker cabinet by simply plugging your guitar into a pedal and going direct? Well, now you can - with the Tech 21 Roto Choir Rotary Speaker Emulation Pedal.

Roto Choir re-creates both the rotary lower speaker and the treble rotor horn to achieve that complex, multi-dimensional tone you know and love. What's more, Roto Choir delivers the entire signal chain, from the original tube power amp to the speaker and high-frequency rotor horn, as well as the microphone used to capture it. How does it pull that off? Well, Tech 21 has been at this awhile; there's some slick technology under the hood.

Roto Choir's simple controls offer you a wealth of sonic options. The Fast/Slow footswitch allows you to ramp up, slow down, or even stop the rotary speaker. Drive adds just the right amount of compression, harmonics and grit. Low and High sculpt the tube amp emulation with powerful EQ. You can also control the top speed of your rotor. To vary the intensity of the effect, you simply adjust the Position control to move the Roto Choir's virtual mic relative to the horns. Other features include a bi-amped/single-speaker mode switch, stereo output and a speaker-simulation switch for direct recording. So, if it's classic rotary-speaker sounds you're after, plug into Roto Choir and see how easy it is to get those lush, swirling tones.

Tech 21 Roto Choir Rotary Speaker Emulation Pedal Features at a Glance:
  • Realistic rotary speaker emulation
  • Interactive controls provide a broad range of tweakability
  • High-impedance 1/4" input
  • Low-impedance 1/4" stereo output drives long cables without loss of signal integrity
  • Custom, silent-switching actuator
  • Buffered bypass preserves sonic integrity and eliminates clicks and pops
  • Power: 9V alkaline battery (not included) or optional DC power supply
Swirl it up with the Tech 21 Roto Choir pedal!

Tech Specs

Pedal Type Rotary Speaker
Inputs 1 x Instrument
Outputs 1 x 1/4" (Stereo)
Batteries 1 x 9V
Height 1.5"
Width 3.5"
Depth 4.5"
Weight 0.6875 lbs.
Power Supply Included No
Manufacturer Part Number ROTO

Customer Reviews

Based on 10 reviews
Write your review

Very Cool

This was just what I needed for certain songs like Heart Breaker by Led Zeppelin, the intro of Country Girl Shake, and many others.
Music background: Professional

Great pedal for chorus-hating pedal buffs

I wanted a Leslie sound but have never really been a fan of Chorus-type pedals.And who doesn't like the Badge sound? I saw some demos of this online and liked the sounds so picked one up. Anyhoo I love this pedal as it has a lot of sounds from old school Leslie to some cool original sounds you can get especially with other pedals. Best of all it doesn't sound "chorus-y" and it's a lot of fun. Plenty of things to play with but not really complicated and quick to get a nice tone.
Music background: Rank Amateur

Tech 21 Roto Choir

I finally have a "Leslie" Pedal thats worth every stickin' penny I have tried and or owned nearly every "Leslie" simulator ever put out over the last 25+ years. Uni-vibes and roto-vibes were ok/best of the lot and the Uni-Vibe will stay on my pedal board because it has a nice niche' to fill but... The Tech 21 Roto-Choir is just off the grid. The over all quality of the sound is excellent, its easy to use, and like a real Leslie, it has a sound that is ever so slightly crack-ly and both trebly yet has that terrific midrange. What does this have that seemingly all the other simulators dont have/do? It has a mic placement dial, which IMO was freaking brilliant. It allows you to adjust the sound so that if you had a mic up close on the cabinet it would give that (sorry, this is the best discriptor I can make an analogy to) full whoosh whoosh whoosh of a spinning speaker, of move it back so that its a little more blended wide whoosh, or move the "mic" further back to get that wide WHOOOOOOOSH that is just stupidly rich and full... It also responds quite nicely to being cranked up or softly. I played it through a tiny Crate, a Fender Twin Reverb, and a vintage Vox AC30 and was pleased with it on all three at all volumn levels. FWIW Guitar Player Magazine gave it an editors choice some time last year for best in its catagory. Want that Leslie sound but dont want a monster heavy cab to tote around... the Tech 21 IS the answer! Also, for people asking about a stereo version. Leslie's are not stereo and not many guitar players have the roadie help or can afford two leslies. A single, MONO is all thats really needed, ever.
Music background: Producer, Engineer, Nationall reviewed guitarist and song writer, with 35 years playing experiance



Its like a leslie in a cigar box

Sounds as good if not better than playing through an actual leslie cabinet.
Music background: 40+ years in the music business

Sweetwater Advice


Tech 21 has long been known for their SansAmp family of guitar and bass processors. These were some of the first amp simulators on the market, and they still hold up well, producing excellent tones. The Character series upped the ante with a line of pedals that each simulated a particular type of amplifier. These pedals have been very popular in the worship market because they include a nice extra: speaker simulation. This lets the pedal become, in effect, your amplifier. Just feed it straight into the PA, and you're ready to go. Now Tech 21 has a new line of pedals, the Boost series. They sent me two members of the Boost family: the Boost Chorus and the Boost Chorus Bass. The new Roto Choir was also in the package. These pedals re-create the sound of vintage pedals, while adding some nice extras. The Boost Chorus, for example, can replicate a very wide range of chorus pedals from the '70s, from pedalboard-standard choruses to "Tri-mode" choruses. You're given a ton of control, including a mix control (this has become a must-have for me on my chorus pedals) and a pre-delay control that allows the pedal to reach into the flanger realm and almost get into the slap-delay range. A level control lets you match the output of the effect to the bypassed signal, or you can boost the level of the pedal way up if you so desire. You can set the Boost Chorus for everything from a subtle thickening to a lush, syrupy wash to a warbly tonality, with rich, colorful tones on tap at every setting. The Multi Voice switch makes things even richer and deeper. I have a number of choruses in my collection, and I have to say that the Boost Chorus can stand in for any of them - color me impressed! If you're after a Swiss Army knife of a chorus that sounds great at every setting, this is the one. The bass version adds detuning for even thicker, richer sounds, without losing bottom end. The Roto Choir simulates rotary speaker effects. It can do pretty much everything the original can do: it ramps from slow speed to fast speed, you can overdrive it, you can adjust the mic distance from the cabinet, you can EQ the treble and the bass, and you can even switch from a single rotating drum to a bi-amped Leslie. In use, this pedal sounds very convincing. The flexibility of the controls allows you to dial in just the sound you want, whether you're looking for clean or dirty sounds. The overdrive sounds and feels natural, and the speed ramp up/down feels right. All in all, it's an excellent pedal - I believe this one has earned a spot on my pedalboard!
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See also: Distortion Pedals, Tech 21, Tech 21 Distortion, Overdrive, Boost & Fuzzrrrabuyvsvsveytfazersurdwarubawvev, Tech 21 Reverbs and Delays