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12AX7+6P6P(6V6GT) Tub Amplificator Audio de Calculator 3.5 W * 2 Desktop Low Amplificator de Putere Terminat Masina cumpara online / Echipamente Electrice Și Accesorii | www.relaxing.ro
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vintage Texas Instruments model TI-82 Graphing Calculator w/ cover Works great | eBay
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Ampbooks SLO 12AX7 Bias Calculation
Lot of 13 Vintage Handheld Calculators Shown - In various Condition on Post-Its | eBay
