Humming

Hello,
I have this amp;
The Topping TP 21 is a so-called Class T integrated amplifier, based on the TA 2021 chipset. the chip makes use of a kind of "Digital Power Processing", this is, more or less, a Class D amplifier with high rate switching properties. That is why they put the word "digital" into it. Actually, there's nothing really digital inside, not in terms of D/A conversion. You can view the official TA2021 datasheet, with detailed tech specs, The Topping TP 21 is nothing else than a pure and simple application suggested by the chipset datasheet. No magic.

Build in Op amp for headphone liner boost, easy to drive any headphone in 16 Ohm~200 Ohm impedance loading,the speaker cut off automatic when the earphone jack plug in.

Totally 3000*2+220*5=7100uF super large capacity with ELNA ‘Pioneer’ Audiophile Grade Cap, very low ESR and high speed response sounds much clearly in detail and huge in deep bass.

High grade component in use, there are Dale resistor, ELNA Caps, ALPS volume control, gold coat PCB,pure copper RCA socket with gold coat
Attachment 26836

Attachment 26835

I'm getting a terrible electrical humming with it via a pc mini to RCA connection and two paradigm mini monitors. When I move the wires around I can get it to stop, but there's still a faint buzz. It's like there's some serious interference goind on. Any recommendations?

No it's a PC with Creative X-Fi sound card.

Thanks guys! Great info. I'll have to study the budget and see what I can. :-) Chris.

I hooked my RWA iMod to the amp via ALO's interconnect. It works flawlessly. I'm using my Paradigm Atom's ( I checked to make sure ) as right and left channels either side of the PC monitors. They're passive so need the amp. It's either the sound card or the mini to RCA interconnect ( best buys brand ). Which one though and where do I throw the money? I'm going to use my son's speakers to isolate the sound card. It still fluctuates when I move everything around and unplug and re-plug the amp's power cord. Frustrating..... Thanks, Chris.