Comprehensive Bench Check
$75 bench fee (applied to labor with approved repairs)
- Voltage and safety inspection
- Signal-path tracing and fault isolation
- Bias verification and tube health report
- Service plan with parts & labor estimate
Amp Repair Services for Knoxville Guitarists
From vintage Fender combos to modern high-gain heads, Surgenor Amps delivers meticulous repairs, restorations, and performance upgrades. Every project includes up-front estimates, clear communication, and a 60-day labor warranty.
Book a Repair Appointment
Prefer to chat first? Text preferred at 865-909-7166; calls welcome, or email [email protected].
Standard Bench & Diagnostic Services
Hourly Repair Labor
$100 per hour billed in half-hour increments.
- Component-level troubleshooting
- Reflowing weak solder joints
- Lead dress cleanup and noise reduction
- Safety upgrades and grounding improvements
Popular Repair Packages
Electrolytic Capacitor Service
Recap packages include premium caps, clean lead dress, and burn-in testing.
- Single-ended amps: starting at $200 + parts
- Push-pull amps: starting at $240 + parts
- Large-format amps quoted after inspection
Retube & Bias Package
Flat-rate $125 labor plus the cost of tubes you select.
- Socket cleaning and tensioning
- Potentiometer and jack maintenance
- Matched power tube biasing
- Quick signal-path health check
Noise & Reliability Overhaul
Custom-tailored to chase down intermittent hums, crackle, and dropouts.
- Shielding, lead dress, and grounding cleanup
- Jack, switch, and pot refurbishment
- High-voltage safety verification
Upgrades & Customization
Performance Mods
- Negative feedback, tone stack, and master volume tuning
- Custom channel voicing and bright cap tailoring
- Switchable gain stages for more versatility
Cabinet & Wiring
- Speaker swaps with impedance matching
- Jack plate and harness rebuilds
Hand-Built & Kit Support
- Kit completion and troubleshooting
- Lead dress, grounding, and heater wiring optimization
- Player-specific voicing tweaks before final delivery
What to Expect
- Consultation: Share your amp model, symptoms, and target tone.
- Estimate: Receive a transparent plan covering labor, parts, and timeline.
- Repair: Work begins once you approve the estimate; progress updates are provided.
- Pickup: Test the amp in the shop, settle the invoice, and enjoy 60 days of labor coverage.
Parts pricing fluctuates with availability. I source from trusted vendors and will quote current costs before ordering.
Service FAQs
Do you work on solid-state or surface-mount amplifiers?
I primarily service tube amps, yet I’m happy to evaluate solid-state models that use repair-friendly through-hole components. Extensive surface-mount circuitry usually falls outside my scope.
Can I provide my own parts?
You are welcome to supply specific components. I guarantee my labor for 60 days, while customer-supplied parts remain the owner’s responsibility if they fail or cause damage.
How quickly can I get my amp back?
Typical turnaround is 7–10 business days after receiving parts. If you have a gig deadline, reach out—rush jobs may be possible depending on current workload and parts sourcing.