The Tech 21 BST-O Boost Overdrive is a Tech 21 overdrive pedal. Close alternatives include the Walrus Audio Ages 5-state and the Third Man Hardware x MXR Limited Edition Double Down. It pairs well with the Divided by 13 JRT 9/15 and the EVH 5150 III.
Tech 21 BST-O Boost Overdrive
Tech 21 · pedal
The Tech 21 BST-O is a boost and overdrive pedal from Tech 21 of New York, delivering clean boost and overdrive capabilities with Tech 21's reliable analog engineering.
What stands out
“The Tech 21 BST-O is a boost and overdrive pedal from Tech 21 of New York, delivering clean boost and overdrive capabilities with Tech 21's reliable analog engineering”
— from the listing
“Build quality is excellent”
— from the community notes
“The BST-O delivers boost and overdrive capability in Tech 21's reliable format”
— from the reviews
“Tech 21's boost and overdrive pedal with clean boost and overdrive in reliable Tech 21 format”
— from the community notes
- boost
- overdrive
- clean boost
- tech 21
- overdrive capabilities
- overdrive capability
- reliable tech 21 format
Amps that pair well with the Tech 21 BST-O Boost Overdrive
Divided by 13 JRT 9/15
Divided By 13
11% matchDivided by 13 JRT 9/15's own dynamic character is the real reason this is worth trying
Comes later in the signal chain
EVH 5150 III
Evh
11% matchBoth lean toward clean boost and high gain respectively — close enough in character that they complement instead of clashing
Comes later in the signal chain
Pedals that stack with the Tech 21 BST-O Boost Overdrive
Ibanez Pentatone Preamp
Ibanez
7% matchIbanez Pentatone Preamp leans toward saturated, and that's a real, usable character to pair with
Comes later in the signal chain
Mad Professor Sweet Honey Overdrive
Mad Professor
7% matchMad Professor Sweet Honey Overdrive's own dynamic character is the real reason this is worth trying
Walrus Audio Julia
Walrus Audio
6% matchKeep Tech 21 BST-O Boost Overdrive's clean boost voice out front: Walrus Audio Julia goes after Tech 21 BST-O Boost Overdrive in the signal chain so its analog warmth voice doesn't muddy it
Comes later in the signal chain
Ashdown Macchiato Compressor Guy Pratt Signature
Ashdown
6% matchAshdown Macchiato Compressor Guy Pratt Signature leans toward compressed, and that's a real, usable character to pair with
Comes earlier in the signal chain
EarthQuaker Devices Afterneath
EarthQuaker Devices
4% matchKeep EarthQuaker Devices Afterneath after Tech 21 BST-O Boost Overdrive in the signal chain, clear of Tech 21 BST-O Boost Overdrive's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
EarthQuaker Devices Dispatch Master V2
EarthQuaker Devices
4% matchKeep EarthQuaker Devices Dispatch Master V2 after Tech 21 BST-O Boost Overdrive in the signal chain, clear of Tech 21 BST-O Boost Overdrive's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Alternativessee all similar tone character →
Walrus Audio Ages 5-state
Walrus Audio
74% similarityShared character: boost, overdrive
Third Man Hardware x MXR Limited Edition Double Down
Third Man Hardware
69% similarityShared character: boost
Vox TG1-FL4BT Flat 4 Boost
Vox
68% similarityShared character: boost
NuX Ace of Tone Dual Overdrive
Nux
68% similarityShared character: boost, overdrive
Shin's Music Mighty Boost
Shins Music
68% similarityShared character: boost
Suhr Dual Boost
Suhr
67% similarityShared character: boost
Tone City All Spark Boost
Tone City
67% similarityShared character: boost
Mooer Flex Boost
Mooer
66% similarityShared character: boost
TC Electronic Rush Booster
TC Electronic
66% similarityShared character: boost
Walrus Audio Plainsman Clean Boost
Walrus Audio
66% similarityShared character: boost
Walrus Audio Defcon 4 Boost
Walrus Audio
66% similarityShared character: boost
One Control Granith Grey Booster V2
One Control
65% similarityShared character: boost
See all alternatives to the Tech 21 BST-O Boost Overdrive (cheaper + boutique) →
Questions people ask
What are good alternatives to the Tech 21 BST-O Boost Overdrive?+
The closest matches in character are the Walrus Audio Ages 5-state, the Third Man Hardware x MXR Limited Edition Double Down, the Vox TG1-FL4BT Flat 4 Boost.
What pairs well with the Tech 21 BST-O Boost Overdrive?+
Strong matches from rig and tone-complementarity evidence: Divided by 13 JRT 9/15, EVH 5150 III, Ibanez Pentatone Preamp — Divided by 13 JRT 9/15's own dynamic character is the real reason this is worth trying.