The Physics of Resonance.
The Art of Perfection.
Master piano technician Andrew Helmann blends formal Piano Technicians Academy science with 15+ years of musical insight to calibrate, regulate, and unlock the full dynamic voice of your instrument.
Engineered Acoustic Services
From concert-pitch aural temperament to sub-millimeter action regulation and tone voicing, every adjustment is performed to Registered Piano Technician exam standards.
Concert Piano Tuning
Rigorous pitch setting to A440Hz concert pitch. We construct the temperament octave with pure interval beat rates (4ths at 1 bps, 5ths at 3 beats per 5s) and tune outward with 0.5 bps octave stretch for harmonic radiance.
Action Regulation
Sub-millimeter calibration of key dip (3/8"), let-off (1/16"), blow distance (1 3/4"), and aftertouch. Restores uniform touch weight, rapid hammer escapement, and effortless repetition speed.
Hammer Voicing
Careful microscopic needling and filing of dense hammer felts. Transforms harsh, brassy, or brittle notes into a rich, singing, and dynamically nuanced concert spectrum.
Repairs & Restringing
Expert repair for sluggish center pins (friction swing calibrated), key rebushing, broken hammer shanks, pedal linkages, and precision single/bass string replacements with follow-up return tuning.
Interactive Action & Escapement Anatomy
A piano action contains over 9,000 precision parts. Inspect the key mechanical components below to understand how millimeter tolerances govern dynamic touch and expressive control.
Services & Flat-Rate Investment
Transparent flat rates derived directly from Registered Piano Technician benchmarks. No hidden travel surprises or variable hourly guesswork.
Standard Piano Tuning
Recommended annually or bi-annually for instruments maintaining regular pitch.
- Complete A440 concert pitch stabilization
- Aural temperament & unisons fine-locking
- Pedal regulation & trapwork inspection
- Minor sticky key adjustment (1–2 keys included free)
- Complete acoustic health assessment
Seasonal Service & Pitch Raise
Essential for instruments overdue for tuning (10+ cents off pitch) or facing seasonal humidity shifts.
- Double-pass pitch correction (equalizes bridge load)
- Full A440 concert fine tuning pass
- Hammer voicing & tone smoothing
- Keybed light cleaning & dust removal
- Complete mechanical action evaluation
Precision Action Regulation
Restores factory touch response, power, and rapid repetition speed.
- Upright Regulation: $450
- Grand Double-Escapement Regulation: $750
- Let-off, blow distance, and key dip leveled
- Synchronous escapement & aftertouch aligned
- Friction swing repinning test calibration
Interactive Service & Repair Estimator
Service Estimate Breakdown
Flat rates include parts, labor, and warranty. Formal on-site inspection confirms condition prior to commencing work.
Service Coverage Area Radar
Enter your zip code or municipality below to verify service zone tier and travel surcharge policies across Central Wisconsin.
Zone 1: Core Hub ($0 Fee)
Direct coverage throughout Sauk, Columbia, Juneau, and Adams counties. Standard flat rate pricing applies with zero travel charges.
Zone 2: Extended Regional
Madison metro, Monroe, Marquette, and Wood counties. Serviced via synchronized route days with minimal or waived group travel fees.
Institutional & Concerts
Custom maintenance contracts for university music departments, concert halls, performance auditoriums, and private recording studios.
A Lifetime of Passion for Acoustic Resonance
My journey with pianos did not begin in a mechanics workshop, but at the keyboard as a classical musician. This foundational connection to musical acoustics informs every tuning pin turn, hammer voicing needling pass, and action regulation millimeter I calibrate.
With over 15 years of dedicated field experience, I treat every instrument with the same exacting precision—whether it is a cherished century-old upright heirloom passed down through generations or a concert grand preparing for the stage.
PTA Certified Technician
Formally credentialed by the Piano Technicians Academy, guaranteeing diagnostic physics coupled with Registered Piano Technician tolerances.
Preparing for Your Service Visit
To ensure optimal precision during the delicate aural tuning and regulation process, please follow these four preparatory guidelines.
Clear the Cabinet Top
Please remove photos, lamps, metronomes, and sheet music from the piano top and music desk to allow immediate removal of access panels.
Provide Workspace Access
Ensure 3 to 4 feet of open floor space around the keyboard and pedals so toolkits, regulation racks, and lamps can be safely positioned.
Room Lighting
Functional room lighting enables thorough visual inspection of the pinblock, cast-iron plate struts, soundboard crowns, and bridge pins.
Acoustic Silence
Setting intervals requires listening for subtle wave offsets (1 beat per second). Please minimize TVs, radios, or vacuuming during the session.
Trusted by Musicians & Educators
Delivering concert-level precision to homes, schools, and performance venues across Central Wisconsin.
"Andrew brought our 1920s family upright back to life. I haven't heard it sound this warm and resonant in decades. His attention to pitch stability and pedal regulation was outstanding."
"As a professional classical pianist, I am extremely particular regarding action aftertouch and unison clarity. Helmann's Fine Tuning is the only service I trust with my baby grand."
"Punctual, meticulous, and explained every step of the pitch raise process. The online booking and calendar invite made scheduling completely effortless."
Frequently Asked Questions
Common questions regarding piano physics, maintenance schedules, and technical procedures.
For residential pianos in Wisconsin, we recommend tuning twice per year. Seasonal shifts in relative humidity (turning on home heating in winter and air conditioning in summer) cause the solid spruce soundboard to swell and shrink, altering string tension. Pianos must be tuned at least once annually to prevent structural pitch degradation.
When an instrument has not been tuned for over 1–2 years, the total string tension (approximately 38,000 lbs) drops substantially. Tuning directly to pitch in a single pass causes earlier strings to drop out of tune as later strings add bridge downbearing pressure. A pitch raise performs a rapid pre-tensioning pass followed immediately by a fine concert pass.
Tuning adjusts string tension to lock notes to A440Hz concert frequencies. Regulation adjusts mechanical linkages (key dip, let-off, aftertouch) for dynamic touch control. Voicing sculpts hammer felt density with needles to customize tone color from bright to warm.
A standard tuning appointment for a regularly serviced instrument takes approximately 1.5 hours (booked in a 2-hour window). Seasonal services with pitch correction take approximately 2.5 hours.
Request a Direct Callback
Have questions regarding an antique instrument, custom regulation, or concert venue booking? Enter your phone number below and Andrew will call you directly.
Technical Headquarters
Weekends: By Concert / Emergency Request