# Amp Tech Toolkit — Tube amp calculators & data

> Tube amp calculators & data (iPhone/iPad app by Nerd Alchemy LLC.)

- Source: https://appshunter.io/ios/app/amp-tech-toolkit/id6829353883 (this page in markdown: same URL + `.md`)
- Developer: [Nerd Alchemy LLC](https://appshunter.io/developer/927008025)
- Category: Music, Utilities
- Price: $14.99
- Age rating: 4+
- Requires: iOS 26.0 · 3 MB
- Languages: American English
- Released: 2026-11-02
- Data updated: 2026-11-06

## What is Amp Tech Toolkit?

Amp Tech Toolkit puts the calculations and data a guitar amp technician reaches for in one place, with records for every amp on your bench.

TUBES
• Datasheet ratings and bottom-view pinouts for 37 preamp, power and rectifier tubes
• Tube swap checker: direct swap, rebias, only if the amp is designed for it, or not compatible, with the reasons

BIAS & POWER
• Bias calculator: target idle current for any dissipation percentage, and checks of measured readings per tube
• Cathode bias: current, dissipation, resistor and bypass capacitor
• Power supply: B+ estimate, ripple, filter stages and filter-cap discharge time

CIRCUITS
• Tone stack frequency response with knob settings and editable part values
• RC filters: coupling, plate-to-grid, bright cap, cathode bypass, interstage dividers
• Ohm's law, resistor power, series and parallel, voltage dividers
• Resistor colour bands, capacitor codes and standard values

SPEAKERS & SIGNAL
• Speaker load: cabinet impedance, how power splits between speakers, and output tap matching
• Output transformer ratios and reflected loads
• Decibels, volts and watts, and output power across a dummy load
• Tone generator: sine, square, triangle, sawtooth, noise, sweeps and bursts

RECORDS
• Amps with tube complement, output taps, fuses, a bias log with per-tube readings, service log and photos, and a one-page service sheet

Every tool explains itself: a short guide the first time you open it, and ⓘ notes on the fields. Works offline. No account, no ads, no tracking.

Tube amplifiers contain lethal voltages. This app is a reference for trained technicians; check every value against the schematic and data sheets.

## Is Amp Tech Toolkit safe?

Not enough ratings yet to assess Amp Tech Toolkit.

## Is Amp Tech Toolkit legit?

Amp Tech Toolkit appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Amp Tech Toolkit is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-11-02

No release notes.

## More apps by Nerd Alchemy LLC

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- [Luthier Toolkit](https://appshunter.io/ios/app/luthier-toolkit/id6829345424)

All apps by Nerd Alchemy LLC: https://appshunter.io/developer/927008025

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-06.*