It was mentioned in Focker's thread on his continuing problems with the ST350 and 744T that the ground lift needs to be used when powering two NT222s off the same battery. I have used headphones to see whether I can hear any difference in background noise level with my NT222s on the same SLA with ground lift on or off and have never heard any noise either way, so I was wondering whether anyone has had a contrary experience, either by actually hearing noise or seeing increased noise level in a wav file? It occurs to me that I have not done the latter test, and probably should. Thanks.
Steve