Hi Simon,
Unfortunately, I don’t have much good news for you from my experience.
I built my first midi interface decades ago. I had K700 at the time and built the interface from instructions in an electronics magazine. It wasn’t too bad but suffered from stuck notes now and then (using it with a Commodore Amiga 1200). I thought I probably hadn’t built it perfectly.
Over the years I’ve had no issues connecting Technics instruments to other instruments using midi cables. However, when connecting to computer, I’ve tried many different USB interfaces and I’ve had problems. All of them have suffered from stuck notes except for the Roland UM One interface. Other members said they have had success with a Yamaha interface.
Whether this problem is specific to Technics I can’t say because I haven’t connected other brands to a computer, other than using the Roland interface. I’ve written about this many times in the legacy forums answering similar questions and other members have had success when changing to the Roland when other interfaces weren’t working for them.
I have a few Roland UM One interfaces now and they all work perfectly. I think two of them are Roland UM One version II. Most recently I bought one last week. I considered trying a different brand mainly to give information to members about other brands but I have the need for another interface and I couldn’t bring myself to risk a different one.
They are quite expensive interfaces and I avoided spending that sort of money for years. I bought several other cheaper interfaces and none of them worked. Trying the UM One was my last resort because I was sure there must be something going wrong on my computers. I was pretty shocked when it actually worked and I’ve never had issues with these Roland interfaces on any instrument.
The Tie Studio interface looks fine and maybe the manufacturer can give you some advice but I suspect there’s something specific about Technics instruments that Roland are addressing in their interface. Perhaps contact the manufacturer and see if they have a driver, I can’t see one on their site.
Sadly, simply from my bad experiences, I fear that you aren’t likely to find out if there’s an issue with your keyboard without buying the Roland interface.
Possibly before that you could try very carefully cleaning every connection in the midi ports on the interface and the keyboard.
One final thing to note. All USB interfaces take their power via the USB connection. All computer USBs give some power but some are intended to power devices (such as charging phones etc). Powered USB sockets have a symbol to indicate that they provide power so make sure you’re plugged into one of those types.
Best wishes,
Mike
If architecture is frozen music then music must be liquid architecture. Quincy Jones
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