Amp Tech Toolkit Terms of Use

Effective: November 1, 2026

High voltage

• Tube amplifiers contain voltages that can kill, even when switched off and unplugged. Filter capacitors can hold a lethal charge for a long time.
• Only work inside an amplifier if you are trained to do so. Unplug it, discharge the filter capacitors and confirm with a meter before touching anything.
• Use one hand when probing a live chassis, keep the other away from the amp, and never work alone.
• Never run a tube amplifier without a load connected to its output.
• Figures in this app are references only. Check every value against the amplifier's schematic, the tube and component makers' data, and your own measurements.

Reference only

Calculations, data, diagrams and records in Amp Tech Toolkit are provided for reference and may contain errors. Confirm all values against the amplifier's schematic, manufacturers' data sheets and your own measurements before working on or operating any equipment.

High voltage

Servicing tube amplifiers involves lethal voltages. The app does not make this work safe. You are responsible for your own safety, for following electrical safety practice, and for deciding whether you are qualified to do the work.

No warranty

Amp Tech Toolkit is provided “as is”, without warranty of any kind, express or implied, including fitness for a particular purpose and accuracy of results.

Limitation of liability

To the fullest extent permitted by law, Nerd Alchemy is not liable for any injury, death, damage to amplifiers, speakers, instruments or other property, or any loss or cost arising from the use of the app or its results.

Trademarks

Maker and product names appear only to identify published specifications and parts. Nerd Alchemy is not affiliated with or endorsed by those makers. All trademarks belong to their owners.

Apple

Your use of the app is also governed by Apple’s Licensed Application End User License Agreement.

Contact

Questions: holmes@nerdalchemy.com