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"This MIDIbox SEQ v4+ is an amazing, 16-track step and morph midi sequencer with arpeggiator that can connect to gear via standard 5pin midi-din cables or a USB cable. It is powered by USB, I will include the cable. Also will include the pre-formatted SD card that stores all the projects and sessions.
The SEQ v4+ is only available as a kit (this one is from midiphy.com), but this one is fully assembled (by me) and works 100%. The buttons are special ordered '909 style' buttons. The displays are extremely high quality OLED displays.
This is similar to a cirklon in that it can serve as the center of your studio and has lots of midi ports. The advantage of multiple midi ports is lower latency. It has 4 assignable midi outs, and 4 sets of assignable midi in/outs. Also multiple USB assignable midi ports. As well as 'internal midi' that can be assigned to other tracks. It's very flexible and incredibly powerful.
(Note: In4/Out4 is wired to accept a future piece of kit that will be created by midiphy.com so regular midi in/out may or may not work for your situation. There are still tons of inputs/outputs to choose from.)
The display in the top left shows visuals based on what mode its currently in. There are multiple shift/button combos but also dedicated buttons for common actions. The OLED screens are readable at extreme angles and has a screensaver that is automatically activated to prolong their life.
The only way to acquire one of these sequencers is to purchase the pcb and case kit, purchase all the components, and then carefully solder, test and install the software. This unit has already been built, it's ready to use and has an all-metal, powder-coated case with screenprinted graphics."