JovialSodium

I'm looking for a recommendation for an amplifier to use on my desk. And I just don't know enough about what's out there to make a good, informed decision. My current one produces an audible buzz at any volume*. I want something that sounds good of course but I don't need anything exceptionally high end. I'm probably not going to notice any difference between a good and a great amp. I'm honestly more interested in quality construction. I want something that'll last. And as budget friendly as is possible within those constraints.

Edit: I live in America. Which matters more now because tariffs. I'd still source internationally if still somewhat competitively priced after tariffs. But something that ships from within the states is probably the most realistic option.

Here's stuff I need it to do. Which is pretty basic.

• Smallish footprint. Current amp is 10" W x 3.5" H x 9" D. (20cm W x 9cm H x 23cm D). And that's fine, but even smaller is better.
• Drive a set of bookshelf style speakers. My current ones are 120w capacity and 6Ω. I don't need anything that can max those out though.
• Have an RCA audio input.
• Not "smart". Which is a bit ambiguous. It shouldn't have a screen (I can tolerate a basic character display but honestly I'd prefer not even that). It shouldn't utilize an app. That kind of thing. Hopefully that gives you an idea.

Ok/nice to have, but not needed.

• Additional inputs. S/PDIF would be nice.
• I would prefer it not support Bluetooth, but not a deal-breaker.
• Surround sound support via DisplayPort/HDMI. Though TBH probably would never get around to utilizing it.
• Something that uses vacuum tubes as part of the amplification circuit (as opposed to just as decorative lights) would be... mostly a novelty to me I admit, but a novelty I'm interested in if affordable.
• Balance/bass/treble adjustments.

* More info related to the current buzzing, in case anyone is curious. It's pretty audible at any volume. There is kind of a sweet spot at around about 40% volume where it's less noticeable. But that's too loud. I could adjust the source audio but I prefer using volume on the amp. I think it's just this cheap amp. My outlets are grounded, but I also tried grounding the chassis of the amp. I tried using S/PDIF input instead of analog, no difference. I have short runs of wire (about 24"/60cm) to each speaker. It's not noticeable on any other audio equipment in the house either so I don't think it's anything in the environment.

The dryer was very noisy. Now it is not.