It's not uncommon for valve amps to be susceptible to RFI problems that are often exacerbated by grounding (earthing) arrangements. It is likely that both your pre-amp and power amp have a mains earth connection and that the screen on the lead between pre and power completes a triangular pathway between them. Sometimes this can cause a "ground loop" problem, sometimes it creates a borderline instability which can give rise to RFI problems. Does the power amp have balanced inputs? You might need to lift the earth on the interconnect at the pre-amp end if moving the (new) router/modem doesn't work.
If you have access to a multimeter, check that there is no voltage differential between the caseworks of the pre and power. Also check that the resistance is zero. If your setup is susceptible to RFI you might want to try replacing the switched PSU of the SB with a linear one. -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal... SB3 (wired) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Blue Jeans Digital,Kimber Speaker & Chord Interconnect cables Outdoors: Boom ------------------------------------------------------------------------ Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=63455 _______________________________________________ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
