🛡️ Certified Examination Rigor: Christopher Brown holds the Registered Piano Technician (RPT) credential from the Piano Technicians Guild. To attain this credential, the practitioner completed and passed standardized written theory, aural concert tuning, and practical grand/vertical action regulation examinations.
Master technician, rebuilder, and inventor of specialized grand regulation tools (Grandwork). Longstanding Boston PTG RPT specializing in high-performance grand regulation, acoustic restoration, and Dampp-Chaser systems.
Official business website (concordpiano.com) and PTG Boston Chapter Roster. Record audited October 2026.