USB Audio Adapter 42961 - background noise

USB 2.0 - USB 3.0 - FireWire - Hubs - Cables - Adapters
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slatermethuen
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Joined: Wed Dec 29, 2010 6:05 pm
by slatermethuen » Wed Dec 29, 2010 6:23 pm
When I use this adapter with low impedance headphones I get a lot of background hiss and a periodic clicking. With high impedance headphones I get no problems.

E.g.
  • Sennheiser HD580 (300 Ohm) - Perfect!
    Sennheiser PX200 (32 Ohm) - slight background noise (low level of hiss)
    Sennheiser CX300-II (16 Ohm) - unlistenable (lots of hiss plus clicking)
Is there a lower impedance limit that I have breached, or might I have a faulty unit?
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