Keith McMillen MIDI Expander

£48.00 (including VAT @ 20%)

3 In StockDelivery Information

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1 year warranty and 30 day money back guarantee included

1 year warranty and 30 day money back guarantee included

Once the product is delivered, you have 30 days to decide that you definitely want to keep it. If you decide it is not suitable for any reason, you can return it back to us for replacement or full refund, including standard delivery charges.

All Products are new unless stated, and include a minimum of one year warranty.

Some items are only eligible for money back guarantee if they are returned to us unused and sealed in the original packaging, and in the case of software, unregistered. These items include:

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  • Mouthpieces, Reeds etc… for Woodwind and Brass instruments
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We are unable to accept returns of any custom made items designed to work together as a unique package, such as computer system built to a customer’s personal specifications. Exceptions may only be possible with prior agreement of the vendor, and may be subject to a cancellation fee.

Product Ref: 33729

  • Keith McMillen Instruments MIDI Expander
  • Use KMI Gear to Control MIDI Hardware Devices
  • Send + Receive MIDI Data With or Without a Computer
  • Works with KMI SoftStep, 12 Step, QuNexus + QuNeo

Keith McMillen MIDI Expander


The MIDI Expander from Keith McMillen Instruments allows you to use the KMI SoftStep, 12 Step, QuNexus or QuNeo to control MIDI hardware devices with 5-pin MIDI DIN connectors. With a MIDI device plugged into the KMI MIDI Expander you can send and receive MIDI data with or without a computer.

Product Ref: 33729

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Spend another £202.00 to buy on finance Finance from £6.82 per month  

  • 15.9%
  • £8.64
  • £311.04
Pay by Finance

To make it as easy as possible for you to get the gear you want, we offer a range of instant finance options. If you spend £250 or more online, you can choose to pay over 48, 36 or 24 months. The majority of decisions are given instantly, so you could get your new gear sooner than you thought!

Representative Example

To help you understand how our finance options work, the examples below are based on a total order value of £250:

Finance APR Deposit to Pay Payments Total Payable
Classic Credit 48 Months 14.9% 14.9% No Deposit 48 months: £6.83
Final payment: £6.83
No settlement fee
Classic Credit 36 Months 15.9% 15.9% No Deposit 36 months: £8.65
Final payment: £8.65
No settlement fee
Classic Credit 24 Months 18.9% 18.9% No Deposit 24 months: £12.41
Final payment: £12.41
No settlement fee

How to Apply

Applying for finance couldn't be easier - if your order totals £250 or more, simply proceed through the checkout as normal, then select Pay by Finance on the payment page, then click the orange APPLY FOR INSTANT FINANCE button. This will start your application with V12 Retail Finance, our finance partner, and completing this form should take approximately 10 minutes.

You should get an instant answer on whether your application has been successful, though in some rare cases V12 may need to look at the application in more detail.

Please note: This is only available on orders placed via the website and is not available in store or via phone currently.

Full Description

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  • Comments from customers who bought this item:

The KMI MIDI Expander is needed for controlling external hardware devices like effects boxes, synthesizers and lighting consoles using the KMI SoftStep, 12 Step or QuNeo over a MIDI cable. When the controller is connected to a computer there is no need for a power supply to run either the controller or the MIDI Expander; if they are connected without a computer then either the controller or the MIDI Expander must use the USB power supply.

The MIDI input jack on the MIDI Expander is solely for receiving MIDI data from external hardware and transmitting it to a computer. It does not function as a MIDI Thru.


  • Works with KMI SoftStep, 12 Step, QuNexus and QuNeo
  • Send and receive MIDI data with or without a computer
  • Control external hardware devices over a MIDI cable