parasound zDac owners - quick question


Hello,

Im demo'ing a zDac. It has a really obnoxious transformer hum. My 2 zamp v3's have the same hum, so Im afraid this is universal for z products :(

Do any other owners of these have the same experience? I tried it with and without a power conditioner, in different outlets, and with different power cables. I even powered it on in a different room away from other audio equipment to eliminate potential field effects. No help.

Thoughts?

Thanks!
lightspeed240

Showing 1 response by jonathan1257

Mine hums, and it's definitely audible from a foot or so away. I emailed Parasound about it. Richard Schramm attributed it to the toroidal transformer; he said some hum is normal, but it will be worse depending on the power in the home, dimmers, etc. I don't hear it from across the room like I did with an old Unico integrated amp I once owned (that hum just about drove me insane). It may be worth opening it up and seeing if you can tighten down the transformer a bit (while unplugged, of course). I have not tried this, but it could work.