But he wrote that he had a problem with an Alps pot "ONCE". They make millions of parts- the chance of having an occasional bad one exists for all manufacturers. After 40 years in the audio business, most of that time working for dealers that did their own service, I don't remember seeing many pots that had problems and if they did, it was with the traces or wipers, not noise from the motor. Many times, bad parts are from the same batch and I think this is true of your pre-amps.\n\nOff topic, but I don't remember seeing any reference to you using specific headphones. What do you use, and what is your opinion of the headphone preamp in the P5?\nHeadphones... I have Grado PS500e and Sennheiser HD650.