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🎹 Unlock your MIDI universe—vintage vibes meet modern power!
The Keith McMillen Instruments MIDI Expander is a compact, lightweight interface that powers your KMI controllers and connects them to classic 5-pin MIDI hardware. Designed exclusively for KMI devices, it includes essential USB cables and a power plug, enabling standalone use without a computer. Perfect for bridging decades of MIDI technology, it supports up to 16 channels and integrates seamlessly with SoftStep, 12 Step, QuNeo, QuNexus, and K-Mix.
| ASIN | B004A908TU |
| Audio Input | USB |
| Best Sellers Rank | #86,323 in Musical Instruments ( See Top 100 in Musical Instruments ) #65 in Computer Recording MIDI Interfaces |
| Brand | Keith McMillen Instruments |
| Brand Name | Keith McMillen Instruments |
| Compatible Devices | SoftStep, 12 Step, QuNeo, QuNexus, K-Mix |
| Connectivity Technology | USB |
| Customer Reviews | 3.5 out of 5 stars 67 Reviews |
| Global Trade Identification Number | 00793573869074 |
| Item Type Name | Midi Controller |
| Item Weight | 2.4 ounces |
| Manufacturer | Keith McMillen Instruments |
| Number of Channels | 16 |
| Operating System | Windows |
| Supported Software | SoftStep |
| UPC | 793573869074 |
| Warranty Description | One year parts and labor. |
I**Y
Allows you to use a KMI MIDI controller with vintage synthesizers and samplers
I use this MIDI expander to connect my KMI 12-Step foot controller (also recommended!) to a Roland SP sampler pad, which has the old-fashioned multi-pin MIDI input. It works seamlessly with these two devices, which were probably manufactured at least 20 years apart. Be warned that it only works with KMI controllers (or so it says, I haven't tested it with any other brand MIDI controllers). It's lightweight but sturdy and worked flawlessly right out of the box.
M**L
Works great
It works great, but seemed over priced.
A**C
Necessary but dumb
It works as described, but shame on KMI for making a propriety box to decode USB to MIDI. Nickel and dime mentality. The MIDI ports on my unit are not aligned with the metal cutout holes and some wider-sheathed cables are difficult to get in and out because they rub against the edge of the metal cutout.
M**L
Way over priced.
It's proprietary and doesn't serve a purpose without its keyboard. It wayyy overpriced. It's like 2-3 pieces of galvanished sheet metal, with a microchip and a few led lights and connection ports, for 60$. Ridiculous. They make you buy this to get the QuNexus to work on an analog synth. Think about that.
A**N
It is too bad it's proprietary to Keith McMillen products and needed just ...
I bought this to use my Keith McMillen 12 Step with a Roland Fantom XR, it does what it is intended to do and outputs midi from the 12 step to my sound module. It's very light and there isn't much to it at all for the price. It is too bad it's proprietary to Keith McMillen products and needed just to send midi from what is a midi foot controller... it works though.
R**.
My Experience with this MIDI Expander, the K-Board Controller and the Keith McMillen Co was no good
I bought this Keith McMillen MIDI Expander, with their $600 K-Board Controller, and other accessories from Keith McMillen through Amazon. I tried, unsuccessfully for weeks to get everything working, including their software Application. Never got anything to work as it was advertised. I Finally gave up and returned the useless K-Board Controller. This MIDI Expander which apparently is only for "some" McMillen products, did not work with the K-Board, supposedly their flagship controller. Happily, I did get a full refund for the K-Board, but sadly this MIDI Expander and the other proprietary accessories are unable to be used, as I am not ever likely to invest in another Keith McMillen product.
R**T
It's work
I'm using it with my circuit tracks, it sounds good but I need to understand it better
L**.
Five Stars
I bought QuNexus and wanted this unit to accompany it. Works perfectly.
Trustpilot
1 month ago
2 months ago