Swing_Riffs
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- Sep 20, 2022
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I recently purchased an SMSL A0100 Class D amp for my home office to power my Pioneer SP-BS22-LR. Recently I noticed a hiss in my headphones connected to the PC only when the SMSL is powered on. When the SMSL amp is OFF the headphones are dead silent.
The SMSL A0100 is directly connected to the back of my PC via RCA cable. My ATH-m30x headphones are connected to front of PC tower via Apple USB-C to 3.5mm (dac/adapter).
Only thing I can think of is the A0100 is sending some voltage/noise through the motherboard via its RCA connection. Is this even possible? To be very clear this PC has been dead silent on the noise front with previous desktop Fiso amp which the A0100 replaced.
On a side note if I turn the volume the up on the A0100 amp to 80% with no music playing there is much more hiss going to my SP-BS22-LR than there ever was with my previous desktop Fiso amp. There is a clipping in the hiss too. Like as studder of sorts kinda hard to explain.
My top priority is to make sure my motherboard is protected and not receiving any voltage or interference. Any help is greatly appreciated.
I have 6 days left in my return window with Amazon. Maybe I should have bought a Yamaha A-S301 instead.
Thanks in advance!
The SMSL A0100 is directly connected to the back of my PC via RCA cable. My ATH-m30x headphones are connected to front of PC tower via Apple USB-C to 3.5mm (dac/adapter).
Only thing I can think of is the A0100 is sending some voltage/noise through the motherboard via its RCA connection. Is this even possible? To be very clear this PC has been dead silent on the noise front with previous desktop Fiso amp which the A0100 replaced.
On a side note if I turn the volume the up on the A0100 amp to 80% with no music playing there is much more hiss going to my SP-BS22-LR than there ever was with my previous desktop Fiso amp. There is a clipping in the hiss too. Like as studder of sorts kinda hard to explain.
My top priority is to make sure my motherboard is protected and not receiving any voltage or interference. Any help is greatly appreciated.
I have 6 days left in my return window with Amazon. Maybe I should have bought a Yamaha A-S301 instead.
Thanks in advance!
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