Tascam DR-05XP

It’s impossible to eliminate the background hiss from the Tascam DR-05xp regardless of what the internet says or what ever you try. 1) changing the gain settings will only reduce your input levels or increase the hiss. 2) using an external mic; I’ve used my Sennheir MKH 416 and Audio - Technica AT4021, but still recorded hiss, so save your money it’s an expensive way to record bad audio. My iPhone records the same quality. I’m a ex-sound technician for theatre and bbc world service so know a little about audio.