Cornerstone Colosseum Double Overdrive Guitar Effects Pedal
Blues Breaker and Klon Style Circuits in One
In Stock
CNS-Colosseum
Free Shipping
Enter Post Code to Calculate ETA or Upgrade to Express
Shop Now. Pay Later.
Always interest-free.
Add your favourites to cart
Select Afterpay at checkout
Log into or create your Afterpay account, with instant approval decision
Your purchase will be split into 4 payments, payable every 2 weeks
All you need to apply is to have a debit or credit card, to be over 18 years of age, and to be a resident of country offering Afterpay
Late fees and additional eligibility criteria apply. The first payment may be due at the time of purchase
For complete terms visit afterpay.com/terms
SHOP NOW • PAY LATER • 100% INTEREST FREE
The Cornerstone Colosseum combines a tweaked Blues Breaker style circuit with no clipping diodes and a clean blend, and a Klon style circuit with a germanium-silicon clip blender, plus switchable circuit order and four rear jacks for looper routing.
Cable Filter: Alternative Options
Cornerstone Colosseum Dual Overdrive Pedal
The Cornerstone Colosseum puts two overdrives in one enclosure: a tweaked Blues Breaker style circuit with the clipping diodes removed and a clean blend control, alongside a Klon style circuit with a germanium-silicon clip blender. A toggle switch sets which circuit runs into the other, and four rear jacks let you route each side separately into a looper or insert other pedals between them. Handcrafted in Italy and designed with input from the Cornerstone community.
Designed with the Cornerstone Community
The Colosseum grew out of a series of polls run amongst Cornerstone's followers and supporters, with the community shaping major design decisions - the reason the pedal carries the motto Effectus Populi. The result pairs two classic overdrive voices, each with a genuinely useful twist.
A Blues Breaker Without the Trade-Offs
The BB side runs with no clipping diodes at all, eliminating the low volume and dark tone the classic circuit is known for, so it stays louder and clearer. The signature Clean control, carried over from Cornerstone's Gladio, blends your unprocessed signal back in, restoring touch sensitivity on pick attack and the bottom end of your original clean sound.
Klon Magic, Reimagined
The K side keeps the sound that made the circuit famous, built around hand-selected 1N34A germanium diodes. Cornerstone adds a pair of silicon diodes and a Clip blender knob, so you can sweep between the classic germanium response and a fresh silicon flavour, or sit anywhere in between.
Routing Built for Loopers and Pedalboards
Four rear jacks give each circuit its own in and out, so you can integrate the K and BB sides independently with a looper or switcher, or insert other pedals between the two. A toggle flips the order of the circuits on the fly, and independent footswitches engage each side on its own or stacked together.
Features:
- Two independent overdrive circuits: Blues Breaker style (BB side) and Klon style (K side)
- BB side has no clipping diodes for higher output and a clearer, brighter voice
- Clean control (from the Gladio) blends your dry signal back in on the BB side
- Clip blender on the K side sweeps between 1N34A germanium and silicon diodes
- Toggle switch changes the circuit order (K into BB, or BB into K)
- Four rear jacks with separate in/out per side - run each circuit independently or insert pedals between them
- Independent K and BB footswitches with LED status
- Designed with the Cornerstone community - Effectus Populi
Specifications:
- Controls (K side): Gain K, Tone K, Volume K, Clip (germanium-silicon blend)
- Controls (BB side): Gain BB, Tone BB, Volume BB, Clean
- Dimensions: 119 x 94 x 42mm
- Current draw: ~150mA
- Input impedance: 1M Ohm
- Output impedance: 50k Ohm
- Power: 9V DC centre negative (no battery operation)
- Handcrafted in Italy
Be The First To Review This Product!
Help other SWAMP Industries users shop smarter by writing reviews for products you have purchased.
