
However, I plugged the amp into my cell phone's headphone out port and also did not hear the screeching at all. Thus, I ruled out the subwoofer as the culprit and did not test hooking the amp up directly to the speakers (note that I also noticed the screeching when plugging in the headphones into the amp so that also rules out the subwoofer). I plugged headphones directly into the SB Audigy sound card on the same 3.5 mm slot where I had my speakers and did not hear the screeching at all, even after turning up to a uncomfortable volume. (The onboard sounded worse so I went back to the Audigy for subsequent tests.)

I switched from the SB Audigy 2 ZS to the onboard sound card (Realtek ALC892) and continued to hear the screeching. I did not notice screeching when I plugged these same headphones directly into the sound card.Īny tips on how I could eliminate this high-pitched noise? Thanks. If I use headphones with this amp (Logitech Gaming Headset G330, which doesn't usually need an amp), the screeching is noticeable at the absolute lowest volume. The ringing is very noticeable by the time it's at the 11 o'clock position. The high-pitched screeching begins to be audible when I turn the amp to about the 9 o'clock position.


3.5mm male-to-male, followed by the included 3.5mm female to RCA male into the back of the amp Sound card: Creative Labs Sound Blaster Audigy 2 ZS.Speakers: A pair of Polk Audio Monitor 30B.

Amp: Dayton Audio DTA-100a Class-T Digital Mini Amplifier 50 WPC.I recently upgraded from cheap Midiland computer speakers to new Polk Audio speakers with a new Dayton stereo amp and since then, I've noticed a constant high-pitched noise from the speakers.
