Free tools and resources for guitar amp builders and infrastructure engineers. Built by someone who does both.
Practical, free tools for guitar amp builders, tube amp enthusiasts and pedal makers. No login, no fluff — just useful electronics knowledge for guitarists at every level.
Calculate quiescent current, check dissipation margins and set bias correctly for EL34, 6L6, KT88, EL84 and more.
Bias & DissipationStep-by-step fault diagnosis for guitar amplifiers. Describe the symptom, follow the tree, find the fault.
Fault DiagnosisVisualise frequency response curves for Fender, Marshall and Vox tone stacks. Adjust component values in real time.
EQ & FrequencyCalculate series and parallel speaker impedance for any cabinet configuration. Avoid mismatches that damage output transformers.
ImpedanceCheck whether your speaker cabinet impedance is safe for your amplifier. Covers common amp and speaker combinations.
Matching GuideFree calculators, planning tools and reference guides for data centre engineers, network architects and infrastructure programme managers. Built from real-world enterprise experience.
Calculate Power Usage Effectiveness and DCiE for your data centre. Benchmark against industry tiers and generate a PDF efficiency report.
Energy EfficiencyIPv4 CIDR subnet calculator. Enter any IP address and prefix length for instant network, broadcast, host range and mask output.
NetworkingVideos on guitar amp electronics, tube amp repair and infrastructure delivery. Honest, technical, no fluff.
▶ @potatoheadelectronicsPotato Head Electronics is a free resource hub run by Arya Sridhar — an infrastructure programme manager with nearly two decades of experience delivering data centre builds, hybrid cloud migrations and company infrastructure separations across global organisations, and a self-taught guitar amp and pedal electronics enthusiast.
All tools on this site are free, require no login, and are built to be genuinely useful rather than impressive. The guitar tools come from years of repairing and building amps. The infrastructure tools come from years of delivering programmes where the right calculation at the right moment mattered.
Certified in PMP, PRINCE2, Microsoft Azure Solutions Architect, VMware VCP and ITIL. Author of Zero Downtime: The Infrastructure Programme Manager's Handbook.
Self-taught amp builder and repair technician. Tube amps, pedal circuits, speaker cabinets. The tools here are what I use myself and what I wish had existed when I started.
Nearly two decades delivering infrastructure programmes at scale — DC builds, POP deployments, cloud migrations, separations. The tools here come from real delivery experience.