The Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator is a rotary pedal. Close alternatives include the Keeley Rotary and the Tech 21 RotoChoir. It pairs well with the Peavey MiniMAX and the Marshall Super Bass.
Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator
Unknown brand · pedal
The Hughes & Kettner Tube Rotosphere MKII is an analog Leslie speaker simulator built around a real 12AX7 tube preamp, reproducing the swirling doppler pitch and volume shifts of a genuine rotating-speaker cabinet rather than a digital emulation. It offers fast and slow rotor speeds with a breaker-style switch to move between them, plus a rotor balance control that shapes the high-frequency versus low-frequency mix the way a real Leslie's horn and drum rotate at different rates. In stereo it produces a wide, three-dimensional swirl with real tonal complexity and depth; in mono it still delivers a convincingly organic, warm rotary wash rather than a static chorus effect. Separate guitar and keyboard impedance and EQ settings let it sit correctly in either signal chain. It suits players wanting authentic, tube-driven Leslie character for organ-style rock, blues, and psychedelic tones without a physical rotating cabinet.
What stands out
“[Pros] ✓ Best roto/Leslie sound, surpassing actual Leslie cabinets ✓ Adds warmth and clarity to the sound ✓ Offers instant control over EQ and signal levels ✓ Remotely controllable, enhancing live performance ✓ Stereo setup creates impressi…”
— from the reviews
“In stereo it produces a wide, three-dimensional swirl with real tonal complexity and depth; in mono it still delivers a convincingly organic, warm rotary wash”
— from the listing
“The Hughes & Kettner Tube Rotosphere MKII is an analog Leslie speaker simulator built around a real 12AX7 tube preamp, reproducing the swirling doppler pitch and volume shifts of a genuine rotating-speaker cabinet”
— from the listing
“It suits players wanting authentic, tube-driven Leslie character for organ-style rock, blues, and psychedelic tones”
— from the listing
“It offers fast and slow rotor speeds with a breaker-style switch to move between them, plus a rotor balance control that shapes the high-frequency versus low-frequency mix the way a real Leslie's horn and drum rotate at different rates”
— from the listing
- leslie
- stereo
- gain
- psychedelic
- drive
- rock
- clarity
- warmth
Genres the Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator is commonly used in
Amps that pair well with the Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator
Peavey MiniMAX
Peavey
34% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
The Rotosphere's tube-driven Leslie swirl adds rotating-speaker motion after the MiniMAX's punchy, flexible gain.
Comes later in the signal chain
Marshall Super Bass
Marshall
31% matchfills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (warm → bright)
The Rotosphere's tube-driven Leslie swirl adds rotating-speaker motion after the Super Bass' pedal-platform gain.
Comes later in the signal chain
PRS HX 50 Head
PRS
29% matchThe HX 50's driven, tube-forward voicing gives the Rotosphere's Leslie swirl plenty of saturation to spin through.
Comes later in the signal chain
Laney Richter
Laney
23% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Laney Richter's stage-monitoring eq pairs with the Rotosphere's psychedelic Leslie motion for swirling, rotary-style color rather than more drive.
Comes later in the signal chain
Mesa Boogie Subway D-350
Mesa Boogie
23% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Run Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator after Mesa Boogie Subway D-350 in the signal chain, clear of Mesa Boogie Subway D-350's own gain stage
Comes later in the signal chain
Peavey MAX 208
Peavey
23% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Run Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator after Peavey MAX 208 in the signal chain, clear of Peavey MAX 208's own gain stage
Comes later in the signal chain
Peavey MiniMAX II Bass Head
Peavey
23% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Run Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator after Peavey MiniMAX II Bass Head in the signal chain, clear of Peavey MiniMAX II Bass Head's own gain stage
Comes later in the signal chain
Fuchs Blackjack 21 Combo (Black)
Fuchs
17% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Put Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator after Fuchs Blackjack 21 Combo (Black) in the signal chain, clear of Fuchs Blackjack 21 Combo (Black)'s own gain stage
Comes later in the signal chain
Pedals that stack with the Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator
Ibanez Tube Screamer
Ibanez
39% matchfills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (transparent → mid-forward)
The Screamer's mid-forward boost can push the Rotosphere's tube preamp harder for a more driven rotary swirl.
Comes earlier in the signal chain
Klon Centaur
Klon
37% matchUsed together by 3 artists
The Rotosphere and Klon are a documented combo, the Klon's transparent boost pushing the Rotosphere's tube preamp into a fuller, more driven Leslie swirl.
Comes earlier in the signal chain
MXR Distortion+
MXR
35% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Keep Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator after MXR Distortion+ in the signal chain, clear of MXR Distortion+'s own gain stage
Comes earlier in the signal chain
Boss DD-200 Digital Delay
Boss
31% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
The Rotosphere's tube-driven Leslie swirl follows the DD-200's shimmering delay for layered rotating-speaker motion. — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
EarthQuaker Devices Chelsea
EarthQuaker Devices
28% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Put Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator after EarthQuaker Devices Chelsea in the signal chain, clear of EarthQuaker Devices Chelsea's own gain stage
Comes earlier in the signal chain
Way Huge Pork Loin
Way Huge
28% matchUsed together by 1 artist
sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Put Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator after Way Huge Pork Loin in the signal chain, clear of Way Huge Pork Loin's own gain stage
Comes earlier in the signal chain
Xotic EP Booster
Xotic
27% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Put Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator after Xotic EP Booster in the signal chain, clear of Xotic EP Booster's own gain stage
Comes earlier in the signal chain
Boss RV-6 Reverb
Boss
27% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Put Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator after Boss RV-6 Reverb in the signal chain, where it won't crowd Boss RV-6 Reverb — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Alternatives
Keeley Rotary
Keeley
66% similarity“delivering the swirling, Doppler-effect modulation of a vintage Leslie rotary speaker cabinet in pedalboard format”
Tech 21 RotoChoir
Tech 21
61% similarity“delivering a Leslie cabinet-inspired swirling Doppler effect with adjustable fast and slow rotor speeds plus cabinet simulation”
Electro-Harmonix Lester G
Electro-Harmonix
57% similarityShared character: stereo
MXR M134 Stereo Chorus
MXR
51% similarityShared character: stereo output, mono, stereo
Fender The Pinwheel Rotary Speaker
Fender
51% similarityShared character: mono, stereo
CostaLab Buffer
Costalab
50% similarityShared character: 8 impedance, clarity
JHS Pedals JHS 3 Series Rotary Chorus
JHS Pedals
49% similaritySimilar voicing: modulated, shimmer
Dunlop JD-4S Rotovibe
pedal
48% similarityShared character: live performances
TC Electronic Vibraclone Rotary
TC Electronic
48% similaritySimilar voicing: modulated
T-Rex BetaVibe Chorus/Leslie
T Rex
48% similarity“combining chorus, vibrato, and a Leslie-style rotary speaker mode in one enclosure”
Strymon Lex V2
Strymon
46% similaritySimilar role and voicing
Mu-Tron Bi-Phase
Mu Tron
46% similarityShared character: mono, stereo
Questions people ask
What are good alternatives to the Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator?+
The closest matches in character are the Keeley Rotary, the Tech 21 RotoChoir, the Electro-Harmonix Lester G.
What pairs well with the Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator?+
Strong matches from rig and tone-complementarity evidence: Peavey MiniMAX, Marshall Super Bass, PRS HX 50 Head — The Rotosphere's tube-driven Leslie swirl adds rotating-speaker motion after the MiniMAX's punchy, flexible gain..