Crazy Tube Circuits
Crazy Tube Circuits stands for boutique effects pedals from Athens that combine classic guitar and amplifier sounds with versatile circuit concepts. The range extends from overdrive, distortion, fuzz and boost through reverb and tremolo to delay and modulation. Models such as Unobtanium, White Whale V2, Cyclone and TIME draw on different vintage sound worlds and expand them with practical controls and switching options. This makes Crazy Tube Circuits particularly suitable for guitarists who want to shape their sound precisely and work dynamically with their guitar, pedalboard and amplifier.
Everything from Crazy Tube Circuits at Kirstein
- Controls the Triptychon drive section independently
- Passive latching footswitch?no power required
- Bypasses the Triptychon?s internal drive assignment
- Connects via a standard mono instrument cable
- Direct on/off switching of the overdrive section
- Robust metal housing for pedalboard and stage use
- Two analog gain sections for drive and fuzz tones
- British amp-in-a-box sound with high dynamics
- Internal 34 V operation for headroom and powerful bass
- RAW and BURN voicings from open to massively saturated
- Passive effects loop between fuzz and amp sections
- Relay true bypass with storable power-on state
- Fully analog 3-in-1 pedal for fuzz, boost and drive
- Four classic fuzz voicings with distinct character
- Treble boost and upper-octave fuzz, each with two voices
- Amp-like drive section for sustain and touch response
- Switchable anti-buffer circuits for modern rigs
- Relay true bypass and flexibly assignable routing
- Handpicked NOS germanium transistors for authentic vintage tone
- Beam control for seamless tone shaping from gated fuzz to British distortion
- Versatile use: from low-gain boost to aggressive fuzz
- 100% analog circuit design with positive ground
- Durable housing, made in Greece
- Compatible with isolated 9 V power supplies (center negative)
- Two independent reverb engines with 16 algorithms each
- Vintage, studio and ambient reverbs in two banks
- Flexible serial, stereo, dual-mono and MISO routing
- Send/return loop for effects between both engines
- Real-time control via footswitch and expression pedal
- Relay True Bypass or Tails with reverb decay
- Combination of effect pedal (right) and amp (left) in one unit
- Reproduces the legendary "Wish You Were Here" sounds
- Authentic reproduction of the circuits of the Colorsound Power Boost and Overdriver
- Clean and overdrive circuits with 100-W and 50-W Hiwatt voicings
- Passive, serial effects loop for inserting pedals between the two sections
- Pedal and amp sections usable independently of each other
- Fully analog spring reverb with a 3-spring tank
- Amp-style tremolo with authentic vintage pulse
- Power-amp driver for lively spring reverb dynamics
- Separate reverb and tremolo sections with True Bypass
- Dwell, Tone, Mix, Volume for precise reverb sound
- Compact, pedalboard-friendly, made in Athens
- 3 Selectable Amp Models (45/SL/MV)
- 3-Band Equalizer + Presence Control
- "Wall of Sound" Switch
- Amp Section and Boost/Enhance Section Switchable Separately
- Effects Loop Between Both Sections
- Power Supply: 9V Adapter (not included)
- Dual-Channel Design: Separate Low and High Gain Channels for Versatile Tone Options
- MOSFET Amplification: Discrete MOSFET Gain Stages for Tube-Like Response
- Internal Voltage Doubling: 18V DC Internally from 9V DC for Maximum Headroom
- True Bypass: Silent Relay Bypass Circuit for Pure Signal Switching
- Compact Build: Durable Metal Housing with Compact Dimensions
- Handcrafted in Greece: High-Quality Craftsmanship and Components
- Enables switching between ODS and SSS voicings
- Disables the internal voicing switch of the Unobtanium
- Passive operation - no power supply needed
- Durable metal housing for stage use
- Compatible with standard TS jack cables
- Compact design for easy integration into pedalboards
- Easy-to-use high-end reverb (mono)
- 16 reverb algorithms, split into two intuitive banks: Vintage/Classic and Ambient/Experimental
- Studio-quality signal path with high headroom, clarity and detail
- Analog-dry signal path
- Assignable expression footswitch and external expression pedal input
- Internal switches for selecting bypass and mix mode
- 4 premium boost voicings in one pedal
- Outstanding tonal transparency and dynamics
- Up to +31 dB gain boost
- Extremely low-noise operation
- High-quality true bypass circuit
- Compact, rugged metal housing
- Pitch Shifter/Vibrato Pedal
- Amp Section with 2-Band Equalizer
- 3 Voicings: Bright, Normal, and Mellow
- Switchable Vibrato with Depth and Speed Controls
- Selectable True or Buffered Bypass
- Legendary distortion/fuzz circuits combined in one pedal
- Fully analog, authentic recreations of the Big Muff and RAT circuits
- Expanded tone control per section
- In link mode, all controls are active on both circuits for greater versatility
- Four Classic Phaser Voicings: 45, 90, ST, LT
- Fully Analog Signal Path for Authentic Tone
- Tap Tempo Function for Precise Speed Control
- Expression Pedal Input for External Control
- True Bypass for Uncolored Signal Flow
- Handcrafted in Greece with Premium Components
- Controls Reverb and Tremolo effects independently
- Compatible with White Whale V1 and V2
- Passive operation - no power supply needed
- Connects via TRS cable (not included)
- Can be used in parallel with onboard footswitches
- Durable, pedalboard-friendly housing?
- "Klon" Pedal Channel: authentic reproduction of the original circuit
- "Dumble" Amp Channel: 2 overdrive circuits with Dumble voicings
- Both channels can be used independently or in series
- Switching via toggle switch or external footswitch
- Passive, serial effects loop
- Enables independent control of the Sidekick JR's modulation section
- Bypasses the internal modulation toggle for more flexible effect combinations
- Passive operation - no power supply needed
- Connects via standard TS cable
- Does not affect the main pedal's power-up presets
- Compact, rugged housing for pedalboard use
Crazy Tube Circuits at Kirstein
Crazy Tube Circuits develops effects pedals with a clear connection to classic amplifiers and historic effects circuits. Rather than focusing on a single type of effect, the brand covers various areas of the pedalboard. These include overdrive, distortion and fuzz as well as boost, compression, delay, reverb and modulation. A characteristic feature is the way its pedals take familiar sound concepts further with additional voicings, control options or multiple effect sections that can be combined.
Many models are therefore interesting when a pedal needs to offer more than a single fixed sound. Unobtanium, for example, combines an overdrive section with a D-style amp-in-a-box, while Crossfire pairs a Blackface-inspired amp section with a classic mid-hump overdrive concept.
Overdrive, distortion and fuzz for different amp characters
Dynamic drive pedals are a major focus for Crazy Tube Circuits, with individual models offering distinctly different tonal approaches. Falcon, for example, is inspired by the behaviour of Tweed and Brownface amplifier circuits and takes typical compression and sag characteristics into account alongside overdrive. Heatseeker, by contrast, uses an analogue JFET concept with three British-inspired amp voicings and combines its amp section with a separately switchable boost/enhance section.
For more powerful fuzz and distortion sounds, Motherload provides two independent analogue circuits inspired by classic Muff and RAT concepts. Its tone controls can be used separately or shared via the link function. When choosing a pedal, it is therefore worth considering whether it should deliver a particular amp character, push an existing amplifier or serve specifically as a distinctive fuzz or distortion.
Reverb, tremolo and delay for spacious sounds
Crazy Tube Circuits also takes different approaches to ambience and time-based effects. White Whale V2 combines analogue spring reverb with tremolo and uses a real spring reverb system. The reverb and tremolo sections can be controlled independently, and their order can be adjusted.
Mirage and Mirage JR add versatile reverb pedals to the range, while TIME is one of the options for echo sounds. The pedal offers adjustable delay time, repeats and tone as well as modulation and tempo control options. Multifunctional concepts such as Sidekick JR combine modulation, delay and reverb in one compact unit, making them suitable for pedalboards where several types of effects need to remain readily available.
Using modulation, boost and dynamics effectively
With Cyclone, Crazy Tube Circuits covers classic phaser sound worlds. The analogue pedal offers several voicings, allowing different variations of the phaser effect. Super Conductor takes a different approach: four analogue boost circuits, each with its own tonal character, are available in a single pedal. This allows an amplifier to be driven in different ways depending on the selected circuit or the signal to be shaped more precisely.
Which Crazy Tube Circuits pedal suits your setup?
When choosing a pedal, it helps to first define its role in your rig. For amp-in-a-box and drive sounds, models such as Falcon, Heatseeker, Crossfire or Unobtanium are potential options, while Motherload is more specifically focused on fuzz and distortion. White Whale V2 is aimed at guitarists looking to combine spring reverb and tremolo, while Cyclone expands the modulation section of a pedalboard. Sidekick JR is an option for players who want to combine several types of effects in one unit.
At Kirstein, Crazy Tube Circuits effects pedals come with a 3-year Kirstein warranty, and competent expert advice is available if you have questions about effect types, signal chains or how a pedal works with your amplifier.