About the manufacturer

Crazy Tube Circuits

Crazy Tube Circuits is a guitar-effects maker. The current GPAS selection includes HI POWER Dual Channel Amplifier & Overdrive, Unobtanium RAW Dual Channel Amplifier Overdrive and Super Conductor Multi-Mode Analogue Boost and covers overdrive pedals, boost pedals, delay pedals and phaser pedals. The model name matters because each effect has a different job in a rig.

For these products, compare effect function, control range, switching, bypass or routing, power requirements and the intended guitar or bass role. The product page is the authority for exact circuitry, connections, condition and included items.

More info about this Product

Guitar Pedals

Guitar pedals are compact effects units that shape and enhance a guitar’s sound, sitting between the instrument and the amplifier. They include gain pedals like overdrive and distortion, modulation effects such as chorus and tremolo, time-based effects like delay and reverb, and essential utilities including tuners, compressors and loopers. Understanding basic things such as pedal type, signal order, power requirements and intended use helps players choose pedals that suit their style, setup and playing environment.

Multi Effects Pedals

Multi-effects pedals combine several effect types, routing stages and often amplifier or cabinet modelling in one floor unit. Their usefulness depends on more than the number of sounds: preset organisation, footswitch layout, switching gaps, expression control, signal-path flexibility, audio quality, USB and MIDI support all affect how naturally the unit works in practice, recording or performance.

More Gear like this

Guitar Pedal

Guitar pedals alter, route, control or support an instrument signal from the floor. The tag covers individual effects, multi-effects, switching, tuning, looping, amplification and pedalboard utilities. The product category and additional effect tags identify the specific job each pedal performs.

Valve Amp

Valve amplifiers use vacuum tubes in part or all of the amplification path. Their response depends on circuit design, output stage, speaker load and operating level rather than valve technology alone. Compare power, channel structure, master volume, attenuation, speaker outputs and maintenance requirements.