Transistor Subs is a reference app developed by Spiro Mandylor.
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App Information
Transistor Subs costs $4.99. The app size is 2.58 MB. The latest version available is 1.1. The last update was on November 11, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since November 2026.
Transistor Subs is made and published by
Spiro Mandylor.
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The app name, icon, screenshots and description belong to Spiro Mandylor and are shown as published on the App Store.
Description by Spiro Mandylor(from the App Store)
Transistor Subs is an offline bench reference for restoring vintage hi-fi equipment. Search a transistor or diode part number to find listed replacements, labelled pinout drawings and specification comparisons.
FEATURES • Vintage transistor and diode references • Replacement suggestions with notes and pinout warnings • Side-by-side electrical specifications where available • Known failure-prone parts flagged for attention • Search that recognizes abbreviated Japanese part numbers, such as C1815 for 2SC1815 • All reference data stored on your device for offline use
Always verify substitutions against the manufacturer's datasheet and the equipment's service manual. Suitability depends on the circuit, operating conditions and exact device. Vintage equipment can retain dangerous voltages even when unplugged.
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