Earthing problem with pc or quad 303?

Discussion in 'Hi-Fi and General Audio' started by chrispy, Nov 2, 2014.

  1. chrispy

    chrispy Quad fan

    Joined:
    Nov 2, 2014
    Messages:
    9
    Likes Received:
    0
    Location:
    Cider country
    Hi, I'm new here so please be gentle, I have an Amp Labs modified quad 303, with Tisbury pre, ps audio dac and home built ( not by me I must add) home theatre pc. Since recently buying the amplification I have noticed audible interference when using the pc, I never had this trouble with my old amp(Leema tucana) I'm not technically minded so is there an easy fix to this problem? Many thanks Chrispy
     
    chrispy, Nov 2, 2014
    #1
  2. chrispy

    Tenson Moderator

    Joined:
    Nov 12, 2003
    Messages:
    5,947
    Likes Received:
    1
    Location:
    Kent, UK
    You may not like the suggestion, but if the amp has been modified is it possible the grounding scheme has been changed for the worse? Alternatively has input filtering been removed and thus out of band noise is demodulating in the circuit?

    How is the PC connected to the amp, through your PS Audio DAC? Optical, coaxial, AES? Interference is a very good reason to connect PCs by optical.
     
    Tenson, Nov 2, 2014
    #2
  3. chrispy

    chrispy Quad fan

    Joined:
    Nov 2, 2014
    Messages:
    9
    Likes Received:
    0
    Location:
    Cider country
    It's connected via USB to dac, think I have a coax output on the PC, would it be worth sourcing a digital interconnect? I could live with the issue, but if there's an easy fix...,.
     
    chrispy, Nov 2, 2014
    #3
  4. chrispy

    chrispy Quad fan

    Joined:
    Nov 2, 2014
    Messages:
    9
    Likes Received:
    0
    Location:
    Cider country
    You're other suggestions are over my head I'm afraid lol
     
    chrispy, Nov 2, 2014
    #4
Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.