I have a set of these $150 electrostatic speakers from FPS (model 200 or 215), with "mid-woofer". They are decent for computer speakers but I cannot find that they are available anymore.
I also had a pair of (also $149) M-Audio monitors, Model Studiophile AV-40 and I can't remember them being bad (thinking back, I actually built some stands to get them at ear level, placed Vibrapods underneath, and used some $200/pair RCA interconnects I had laying around). I think these were OK speakers or I'd remember... I actually still have them on top of the kitchen cabinets for listening to Pandora from the laptop and they work great. Don't know about audiophile accuracy though. The M-Audio site says these speakers are shielded for use next to a monitor
which I'd think is kind of a necessity.
M-Audio makes at least three kinds of small powered speakers - black wood, carbon, and stained wood for seemingly $150 to $250. I don't have time to look thoroughly but it seems not all their speakers are shielded. These three-way powered speakers pictured below don't look too bad, Model M3-8. Can't see they are shielded though...
I haven't compared the sound of any of these speakers; I only know they are not terrible and when you watch the guy playing bass on YouTube you can actually hear notes being played (as opposed to literally hearing no bass at all with TV or computer monitor speakers).
I have had a Linn Sondek Turntable and still have a Linn Genki CD player, to play through Thiel CS2 speakers, let's say a $5000 setup or more in today's dollars. So if the M-Audio speakers were awful maybe I'd recognize it. I researched decent powered desktop speakers seven and five years ago when making these purchases and pretty much squat was available as far as reviews. So, in two rare times of spending money with no "engineering" data or rigorous reviews to go on, I made these two not too expensive purchases and am not unhappy.
Don't know if I've helped you any, but that was/is my experience.
Addition: after going to the Emotive website - they are a "real", complete, audio company; (assuming they are shielded) I'd not hesitate to get a pair of their Airmotiv 4, 5, or 6 speakers and be content.
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I forgot, I've also used this Behringer UCA 202 Interface ($20?), which is essentially a super cheap DAC one can use to bypass the even cheaper sound card one might have in their desktop? Anyway, here it is; it works fine for me now in the kitchen, between my wife's MacBook Pro and the M-Audio speakers. It has an optical out also, if one should ever need it.
I'd think $30 to $99 spent on a Fiio or similar DAC along with any of the Airmotivs would be a pretty darn acceptable solution.
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Good Lord, how did we get to this from Gungnir comments and opinions? Sorry to (continue to) hijack this thread, but there must be thousands of us who would like to have a decent pair of computer speakers instead of the $3 Logitecs that used to come with one's desktop.