beyerdynamic DT 770 Pro Studio Headphones - Over-Ear, Closed-Back, Professional Design for Recording and Monitoring (80 Ohm, Grey) : Amazon.sg: Electronics
Metal Oxide Resistor 33 Ohm 5 W 5% Pack of 4 (20003): Amazon.de: Business, Industry & Science
KAIWEETS Digital Multimeter KM100, CAT III 600 V Voltmeter für AC/DC Spannung, DC Strom, Durchgang, Widerstand, Diode (mit Messleitungen) : Amazon.de: Baumarkt