I came across about 100+ resistors a customer gave me several years ago as a thank you for fixing his harp. Not sure what the one pack is since there are no markings. The other bag is labeled, Allen-Bradley Co. Fixed Resistors. 820K ohm 1/4 watt. Other code markings are CB8241 and RC07GF824K. Would they serve the purpose for custom mic or amp use? mike