GrandNagus50
100+ Head-Fier
I have experienced no cellular noise from my iPhone when used with the HA-P50. I have had no problems with the unit. I will say that the sound is a little less rich than what I get from my Cayin C5, which is a more powerful amp (no DAC). It would be nice if the TEAC had a bass boost, but it does not. Particularly at the price I paid ($199) I think it's a good piece of gear.