I just moved to a new house and started to hook up the equipment in my home studio and i am getting unwanted hum noise through my speakers. I have an Apollo Twin Duo connected via Thunderbolt to my Imac. I also use a Golden Age Preamp 73 MKII sometimes connected to my Apollo via the Hi-Z imput. My hum comes when plug in the 1/4" TRS cable from the GAP 73 output to the Apollo Twin Hi-Z. If i record directly to the Apollo i get no hum from my mic. Im not sure if just need to lift the ground on my GAP 73 or not. Where i had the studio hooked up last i never had this hum. I have tried unplugging everything and plugging things in one by one, i have all monitors, imac, preamp and monitors on the same surge protecting powerbar. Any help or suggestions would be greatly appreciated
ground loop help?
- Thread starter djtdot
- Start date
My mic is going into my gap sometimes so I am coming out of the gap into the Apollo.
n1kk666
Established Member
I think you answered your own question. Don't use the hi-z input for connecting a mic pre. You really only want to use that for guitars, bass or synths. Plug the GAP into the line in on the back with a trs cable.
As a side note, I find that The Apollo preamps with unison sound better than most preamps that aren't high end So you may find that the GAP is unnecessary.
As a side note, I find that The Apollo preamps with unison sound better than most preamps that aren't high end So you may find that the GAP is unnecessary.