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Custom C-Extensions

Over the past 30 years, Robertson & Sons has been dedicated to designing custom C-Extensions for the most discriminating bass players around the world. We take great care while installing your Bass Extension and you will be pleased when you receive your instrument from our shop. Robertson & Sons is a member of the International Society of Bassists and in 1993 won the ISB Luther Award for recognition of service to the bassist community. Call our office at any time and speak to our bass specialist David Briggs.

Download a copy of our Custom C-Extension Maintenance Manual here.


Phone: 505.889.2999
Toll Free: 800.284.6546
Email: Click here
3201 Carlisle Blvd. NE
Albuquerque, NM 87110


© Copyright 2013-2014 Robertson & Sons Violin Shop, Inc. all rights reserved