This is the preorder for a EXPANDER MK2 programmable multi-fx processor.

The total price is $4999 with free worldwide shipping, the remaining balance of $3500 is to be paid when the product is ready for shipping in early 2024.


Black Corporation is thrilled to introduce EXPANDER MK2, a revolutionary tabletop or 6U rack mount effects processor combining the magic of both analog and digital worlds. A major evolutionary leap from our original EXPANDER, MK2 takes multi-effects processing to new heights, boasting an incredibly flexible effects system that covers everything from reverb and delay to modulation and overdrive, and much more.


With line and HI-Z inputs, the EXPANDER MK2 is perfect for a diverse range of music producers, synthesizer users, guitarists, bassists, and live musicians looking to expand their sonic horizons. The stereo and dual-mono routings offer an immense range of connections, with each channel having its own distinct effects chain. The intuitive routing matrix array of LED tact switches lets you create an endless variety of effects chains, from sending a single source to multiple effects in parallel, to cascading them in series.


EXPANDER MK2’s interface takes a knob per function approach, allowing you to dive right into new sonic territories. You can easily save and recall all your settings as presets, with complete MIDI CC functionality, foot switch, and expression pedal inputs adding even more control possibilities.


Delay: The delay section is MIDI syncable, offering both digital and analog options. The digital delay is based on the legendary PCM42, with the same discrete 12-bit ADC/DACs, optical compressor, and filters as the original. Guidance from Gary Hall, the engineer behind the original unit, has resulted in a sound as close to the original rack as possible, with the added benefit of a modern CPU and expanded memory.The analog delay, using analog BBD circuitry, offers a warmer tone with up to 820 milliseconds of delay time. Both delays feature panning controls for added spatial motion.


Reverb: As on the delay, EXPANDER MK2 boasts both digital and analog options. The digital reverb is based on the lush and spacious 224, faithfully recreated by our friends at Meris. The spring reverb uses two 17” tanks (one for each channel) each equipped with an EQ and digital pre-delay section.


Modulator: The modulator is a ring modulator section with enhanced functionality. The first being a quadrant multiplier ring modulator for clean, modern silicon chip-based sounds, and the second, a vintage-style, harmonically rich transformer and diode based ring. The modulator also includes a reference oscillator with an attack and release envelope controlling its pitch, similar to that on DECKARDS’S DREAM’s predecessor, the CS-80.


Chorus: The chorus section features two distinct BBD chorus lines, with manual controls for speed and depth, to add subtle stereo widening or intense, turbulent animation. For fans of the classic four-button chorus, those presets are in there too!

Phaser: The phaser section includes an analog OTA-based 12-stage phaser circuit for warm, psychedelic phaser effects, as well as an optical phaser to get a classic Krautrock sound.


Insert / Resonator: The Insert / Resonator section allows you to patch in outboard effects into any part of the effects chain. The resonator component can be used as a subtle EQ to sculpt the tone or can be modulated by the LFO section to create animated resonant or panning effects. The insert returns and sends can occur pre or post-resonator and can also be used as an extra input and output to route multiple signals. When used in parallel, these can turn EXPANDER MK2 into a 4-channel effects processor.


Overdrive: The overdrive section uses Korg’s groundbreaking Nu-Tube micro tube technology to add subtle texture and warmth to any sound, from guitars, synths, drum machines or vocals to anything in between. When pushed further, it can create screaming distortion, perfect for anyone looking to turn up the heat.


LFO: The LFO section features a multitude of LFO’s routable to nearly any destination of the other sections, adding life and movement throughout the signal path.


A convenient selection of connections on the back panel of EXPANDER MK2 includes balanced inputs and outputs, stereo send and return (via individual 1/4″ jacks or using a common DB25 connector), expression and switch pedals, USB, and DIN MIDI. Additionally, the front includes a convenient HI-Z input for guitarists or any instrumentalist with quieter outputs to plug and play right away. EXPANDER MK2’s natural wood sides can be switched out for included rack ears.


EXPANDER MK2 is a vintage effects inspired powerhouse pushing the boundaries of sound in a robust, studio form factor. Its hands on capabilities and nearly endless routing options make it an outstanding companion to any production or live set up!


Additional information



Programmable stereo multi-fx processor

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