Mode Machines - Xoxbox (TB-303 clone)

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Page last updated Jul 01, 2026

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Description

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The Mode Machines Xoxbox is a meticulously crafted TB-303 clone designed for musicians who appreciate the iconic acid basslines of the '80s. This synthesizer channels the spirit of the original while offering modern enhancements for today's music producers. With its authentic analog circuitry, the Xoxbox delivers the warm, squelchy bass tones that defined an era, perfectly suited for electronic music genres like acid house and techno.

Featuring a classic step sequencer and a range of controls for precise sound shaping, the Xoxbox is an essential tool for live performance and studio production. Its interface is user-friendly, allowing both seasoned producers and newcomers to easily tweak parameters and craft unique sounds. Whether you're looking to recreate classic tracks or develop your own signature style, the Xoxbox provides the flexibility and power needed to bring your musical ideas to life.

The unit includes MIDI connectivity, ensuring seamless integration into modern setups. Its portable design means you can take your sound wherever you go, making it a versatile addition to any musician’s arsenal.

Key Features:

Faithful reproduction of the original TB-303 sound
Classic step sequencer for intuitive pattern creation
Authentic analog circuitry for warm, rich tones
MIDI connectivity for easy integration with other gear
User-friendly interface tailored for both live and studio use
Portable design for music on-the-go
Range of controls for comprehensive sound shaping

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acidjack303

xoxbox by Mode Machines

acidjack303

x0xb0x - mode machine - TB303 clone acid line test

Analog Tecne Model

ModeMachines x0xb0x (xoxbox / socksbox / TB-303 clone) seamless integration

AJK Trialsport

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Mode Machines - Xoxbox (TB-303 clone).

Build quality

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The TB-03 is noted for its metal face, contrasting with the original TB-303's plastic shell, providing a more robust feel.
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The Cyclone TT-303 mk2 is praised for its analog sound and improved sequencer functions, though the mk1 version has a more authentic 303 look.
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The x0xb0x maintains value and is reportedly appreciating due to its use of original TB-303 components.
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Use cases and applications

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The TT-303 is valued for its ease of use with MIDI sequencing and its lack of MIDI CC control for knobs, suggesting a focus on performance over automation.
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The built-in speakers and battery power of the TB-03 offer convenience for portable use and on-the-go jamming.
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The Cyclone TT-303's unique "bot" feature can generate acid lines with specific notes and rhythms, enhancing creative acid production.
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Comparisons

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Donner B1 is recognized for its "greasy" sound, distinct among clones, though it has a plastic case.
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The TB-03 is appreciated for its accurate slides and accents, closely replicating the original TB-303, although its sound is slightly different.
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Owners claim the x0xb0x and original Cyclone TT-303 sound most like the original TB-303, especially noticeable in the low-end.
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Features and functionality

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The TT-303 offers live accents, slides, and generative/random sequence features, enhancing its performance capabilities beyond a standard 303 clone.
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The MAM MB-33 lacks MIDI CC but is noted for its great sound, which can be a limitation for those seeking extensive MIDI control.
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The x0xb0x can be upgraded with the n0nx0x CPU for enhanced features, making it a versatile option for those seeking additional capabilities.
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User experience

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The RE-303 is highlighted for its rich, deep sound and sturdy build, with trim pots that enhance its sonic capabilities.
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Some users find analog gear like the x0xb0x noisier than digital alternatives, preferring plugin versions for a cleaner sound.
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Owners who have switched from the TB-03 to the x0xb0x report a warmer, squelchier sound that better satisfies their desire for authentic acid sounds.
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Some users find the Behringer TD-3's sequencer to be the only part that convincingly replicates the TB-303 experience.
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