That's not exactly a ringing endorsement of Ketron's after sales service. AJ seems to be doing a good job, but one man taking up the slack for an entire company that seems to care nothing about its customers doesn't inspire me.
For whatever reason, illness, a falling out with the company, whatever, if AJ is not your contact, once again, you are screwed. Holding its customers over a barrel and saying that, unless you buy AJ's upgrade, you might as well talk to a brick wall if you want after sales service is appalling.
I should get the same level of service from Ketron whether I purchase additional upgrades or not. No other manufacturer ignores its customers until they have purchased expensive additional upgrades. This is extortion, not customer service.
A $5000 arranger should come with the highest standards of service out of the box. Not after you have been forced to pay even MORE!
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An arranger is just a tool. What matters is what you build with it..!