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Arizona's One Stop Professional Guitar & Amplifier Repair Shop
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Retube & Bias

Retube & Bias Amp & PA Repairs

[Under Construction]



Amplifier Re-Tube & Bias Service

Get your guitar or bass amp sounding and and maximize tone with a complete re-tube and tune-up service. Our re-tube service and performance tune-up includes everything required to prepare your rig for professional use. This includes performing other steps that are often needed but not included by other shops.

 Our Complete Tube Amplifier Re-Tube & Bias Service    A vintage Marshall amp in for tubes and bias work.
  • Bench Scope Amplifier & Check Power (pre inspection)
  • Perform Visual Inspection of All Components
  • Check Preamp Tubes for Micro-phonics
  • Clean & Deoxidize All Tube Sockets
  • Clean & Lubricate All Pots
  • Clean & Deoxidize All Jacks & Switches
  • Install New matched Power Tubes
  • Test & Verify All Plate, Grid & Supply Voltages
  • Set Bias (Oscilloscope Method) & Verify Voltage
  • Oscilloscope Test Waveform & Verify Tube Matching
  • Load Test Amplifier  & Verify Wattage Output (VxV/R method)
  • Tighten All Hardware & Components
  • Clean Entire Amplifier  Exterior
  • Performance Test Amplifier Guitar/Bass


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