Unisons that are pure and stable are the bedrock of any quality tuning. Fail to achieve this skill and you WILL lose customers.
The problem is, everybody thinks their unisons are good, but few technicians have concert level unisons.
At the International Piano Technicians School, we teach unisons completely differently than any other school and that is one of the many reasons why our students get concert level tunings in months instead of years.
Watch this video to find out how we do it.