Quantities of these "New Old Stock" carbon composition resistors are limited, production has now ceased in the USA. Allen Bradley resistors have a huge following of D.I.Y valve hi-fi builders and guitar amp enthusiasts. A huge amount of old manufactured hi-fi were built using these resistors, hence these antique carbon resistors are close to the hearts of many. They were used heavily in vintage Fenders, Marantz, etc. Carbon Composition Resistors particularly those manufactured by Allen Bradley are becoming more scarce and are in high demand due to their unique characteristics. They are known for their very clean and natural sound. Composite resistors differ from film resistors in that they consist of a little tube with a composite carbon resistor material inside. This makes the resistance, so you only have a few mm of material in the signal. A film resistor is made by carving a channel into a carbon (or metal) film on a glass or ceramic tube, resulting sometimes in meters (feet) of material in the signal! Also a film resistor always has inductance, composite resistors don't.
Because of their very good sound we can recommend them on all places. In the signalpath of amps, in the RIAA correction, cathode resistors, low power anode loads, etc. They are highly recommended in solidstate electronics.

If you are looking for a low cost, reliable, musical resistor, look no further.