Topping MX3 Power/Headphone Amp w/ Bluetooth Discussions | Drop

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Topping MX3 Power/Headphone Amp w/ Bluetooth

Audiophile

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M3TAl

Dec 11, 2017

Having a problem: audio is popping/clicking and dropping out a lot. MX3 is connected via Toslink to the TV (Panasonic GT30). The display keeps changing back and forth from the volume setting to 48 kHz.
Signal path: uverse cable box hdmi to TV, TV Toslink to MX3, MX3 to Dayton Audio MK402 speakers via 16 awg speaker cable.
I know my Toslink cable and TV is good because the past few months it's been connected to speakers with built in amp+DAC via Toslink and sometimes to a sennheiser wireless headphone receiver via Toslink with no issues.
Edit: left the cable box, TV, and MX3 off for ~1 hour and now it's working normal. No idea why though. Previously I had unplugged and re-plugged the Toslink multiple times and power cycled everything multiple times. Hope it keeps working normally.

Dec 11, 2017

M3TAl

Dec 18, 2017

M3TAlSo... I've found out that my issue still happens but only when physically touching/using the volume knob on the amp. If I never physically touch it and use only the remote it works fine. What's up with that? Some kind of electrical short or improper grounding?

Dec 18, 2017

Yigal.K

Apr 7, 2018

M3TAlSounds like a grounding issue. Try connecting it to the TV with a conductive connection (aux / coax). You don't have to use it, just connect them so they share a ground. Maybe that'll help.

Apr 7, 2018

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