The T-Rex BetaVibe Chorus/Leslie is a T Rex chorus pedal, currently around $322.46. Close alternatives include the Keeley Rotary and the TC Electronic Vibraclone Rotary. It pairs well with the 1959 Fender Tweed Deluxe and the Fender Bassman Combo Amp.
T-Rex BetaVibe Chorus/Leslie
T Rex · pedal
The T-Rex BetaVibe is a Uni-Vibe-style modulation pedal from T-Rex Effects in Silkeborg, Denmark, combining chorus, vibrato, and a Leslie-style rotary speaker mode in one enclosure. The chorus and vibrato modes reproduce the swirling, watery, Doppler-effect character of a classic Uni-Vibe, while the rotary mode adds the spinning, speed-ramping character of a rotating Leslie cabinet for a different, more mechanical kind of swirl. It suits Hendrix-influenced, classic-rock, and psychedelic players wanting genuine Uni-Vibe swirl and vintage rotary-speaker modulation from a single pedal rather than needing separate units for each effect.
What stands out
“The chorus and vibrato modes reproduce the swirling, watery, Doppler-effect character of a classic Uni-Vibe, while the rotary mode adds the spinning, speed-ramping character of a rotating Leslie cabinet for a different, more mechanical kind…”
— from the listing
“Standout strength: combines genuine Uni-Vibe-style vibe/chorus and Leslie-style rotary modulation in one enclosure”
— from the community notes
“The T-Rex BetaVibe is a Uni-Vibe-style modulation pedal from T-Rex Effects in Silkeborg, Denmark, combining chorus, vibrato, and a Leslie-style rotary speaker mode in one enclosure”
— from the listing
“and psychedelic players wanting genuine uni-vibe swirl and vintage rotary-speaker modulation from a single pedal”
— from the listing
“classic-rock”
— from the listing
Trade-offs
“Signal-chain interaction: modulation of this type conventionally sits after drive in the chain”
— from the community notes
- chorus
- rotary
- leslie
- uni vibe
- vibrato
- psychedelic
- modulation
- classic rock
Price updated Oct 23, 2026
Genres the T-Rex BetaVibe Chorus/Leslie is commonly used in
- Classic Rock
Amps that pair well with the T-Rex BetaVibe Chorus/Leslie
1959 Fender Tweed Deluxe
Fender
12% match1959 Fender Tweed Deluxe's own transparent character is the real reason this is worth trying
Comes later in the signal chain
Fender Bassman Combo Amp
amplifier
12% matchWhat Fender Bassman Combo Amp brings here leans toward crunchy — that's worth building a pairing around
Comes later in the signal chain
Pedals that stack with the T-Rex BetaVibe Chorus/Leslie
ZVEX Fuzz Factory
Zvex
8% matchWhat ZVEX Fuzz Factory brings here leans toward fuzzy — that's worth building a pairing around
Comes earlier in the signal chain
Paul Cochrane Timmy
Paul Cochrane
8% matchPaul Cochrane Timmy's own transparent character is the real reason this is worth trying
Comes earlier in the signal chain
Source Audio Nemesis
Source Audio
6% matchRun Source Audio Nemesis after T-Rex BetaVibe Chorus/Leslie in the signal chain, where it won't crowd T-Rex BetaVibe Chorus/Leslie — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Walrus Audio Bellwether Stereo Analog Delay
Walrus Audio
6% matchPut Walrus Audio Bellwether Stereo Analog Delay after T-Rex BetaVibe Chorus/Leslie in the signal chain, where it won't crowd T-Rex BetaVibe Chorus/Leslie — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Cheaper alternatives
Dunlop JHMS3 Hendrix Shrine Series Uni-Vibe
Dunlop
64% similarityShared character: vibrato, chorus, modulation
Caroline Guitar Company Somersault LoFi Modulation
Caroline Guitar Company
63% similarityShared character: vibrato, chorus, modulation
Strymon Ultraviolet
Strymon
56% similarityShared character: vibrato, chorus
Catalinbread Pareidolia
Catalinbread
92% similaritysimilar tone character
Behringer VP1B
Behringer
91% similaritysimilar tone character
Caroline Guitar Company Somersault
Caroline Guitar Company
90% similaritysimilar tone character
Boutique & premium upgrades
Similar charactersee all similar tone character →
Keeley Rotary
Keeley
84% similarityShared character: vibrato, chorus, modulation
TC Electronic Vibraclone Rotary
TC Electronic
76% similarityShared character: vibrato, chorus, modulation
Tech 21 RotoChoir
Tech 21
74% similarityShared character: chorus, modulation, classic rock
JAM Pedals RetroVibe Mk.4
Jam Pedals
72% similarityShared character: vibrato, chorus, classic rock
Electro-Harmonix Lester G
Electro-Harmonix
66% similarityShared character: chorus, classic rock, overdrive
JHS Pedals JHS 3 Series Rotary Chorus
JHS Pedals
65% similarityShared character: vibrato, chorus, modulation
See all alternatives to the T-Rex BetaVibe Chorus/Leslie (cheaper + boutique) →
Questions people ask
What are good alternatives to the T-Rex BetaVibe Chorus/Leslie?+
The closest matches in character are the Keeley Rotary, the TC Electronic Vibraclone Rotary, the Tech 21 RotoChoir. Budget picks: Dunlop JHMS3 Hendrix Shrine Series Uni-Vibe, Caroline Guitar Company Somersault LoFi Modulation, Strymon Ultraviolet. Boutique upgrades: Roger Mayer Voodoo-Vibe 2024, Dunlop Uni-Vibe UV-1 Chorus.
What pairs well with the T-Rex BetaVibe Chorus/Leslie?+
Strong matches from rig and tone-complementarity evidence: 1959 Fender Tweed Deluxe, Fender Bassman Combo Amp, ZVEX Fuzz Factory — 1959 Fender Tweed Deluxe's own transparent character is the real reason this is worth trying.
How much does the T-Rex BetaVibe Chorus/Leslie cost?+
Around $322.46 (live listing price, updated Oct 23, 2026).