Drives my bookshelf speakers nicely. I have a separate sub so I don't ...
340191
Drives my bookshelf speakers nicely. I have a separate sub so I don't need high power. I'm very satisfied with the sound that this amp can produce.
3657341
The sub-woofer amp works good for my needs. However the amp would start to buzz if I left the volume up too high.
3328368
I have this powering two 3-way speakers. The amp runs out of juice real quick...but it gets things loud enough for some fun. Definitely not the best choice for a full-tilt home entertainment center, but a great choice for a small setup looking for more crisp sound than comes out of crappy TV set speakers.
166210
A very nice, sub one hundred dollar addition to a bookshelf speaker set-up. I added this subwoofer to a pair of powered speakers and it provided the needed depth and warmth.
1925157
If you're looking for some simple bookshelf speakers, or a lower cost alternative to high priced satellite speaker systems, these are worth considering. If you desire deep bass, you'll want to add some sort of subwoofer.
3423415
Bought it to power my 5.5" outdoor speakers. Sounds OK. Noticeable distortion at higher volumes and need to be very careful with gain structure. For its purpose and price, it serves me really well. I guess I will eventually upgrade to a higher quality one but this does the job for now.
1222916
Great little book shelf speakers with built in amp 43 watts, all the connectors and even a remote control.
They are very attractive. Note: Both speakers have the front piece.
Excellent packaging. You could drop it from a airplane. Well almost.  LOL
I bought them for my Turntable. Technica AT-LP60
A very good sound. I didn't say great.
Better bass than I expected.
If you want to spend $500 on better speakers....Go for it
We are talking about $100 here.
4386631
I purchased these looking for some decent sounding speakers with a smaller footprint on my desk. I can't say I expected these things to sound so good and have a decent volume that I can can be heard halfway through the house even at 25% of Windows volume. I do wonder how well other larger speakers would have sounded if I had more room for them. I didn't really care for much bass but I ended up pairing these with a Dayton Audio SUB-1000 and feel like they match well enough. Would probably be more balanced with a smaller sub but I like my setup.
2129102
I like it, if you use a better power supply it works well. I would buy more.

the big down fall is the crossover is a joke, and the sub control is completely independent of the master volume.
4883244
Not bad! Might try swapping out drivers (2) for kicks. Take the front face plates off for a more hifi look. I got these to play quiet music in an open office and they do the job. I wanted the usb power option for a bit more juice for something that I wanted to control with my headphone dac/amp. The volume pot is on the rear of the right speaker which is perfectly out of sight. Set once and then control with my amp.
4527208
Easy to install, some what lacking in power, but that could also be due to my speakers!
1903939
This is an excellent amp to drive a set of bookshelf speakers. The amount of power you get out of this little amp is amazing. I am powering it useing a 19.5v laptop power supply  and it is driving a pair of DCM K-7 bookshelf speakers.
4828558
I'm not an audiophile by any stretch of the imagination, but I do know good sound when I hear it, and this inexpensive center channel speaker really improved my modest home theater set up. Good quality for the money, and easy to install. No downside as far as I am concerned.
3486891
These bookshelf speakers have been bought to replace smaller, less expensive bookshelf units, mostly because the first one I purchased (Polk M-10, on sale) were lacking too much in the lower frequencies for my taste.  I know, you can't expect any real bass from bookshelf speakers, but nonetheless.

Anyway, I just brought the TSi200 home a few hours ago and had them do a very minimal burn-in for a few hours whilst I was doing something else (they are paired with a Yamaha RX-397 receiver, as an home office sound system -- this is not my main audio rig!).  I got back to them when I took a break from working on my house, giving a "quick listen" to a few ripped CDs.  I know they are not fully broken in and are not in their final "resting place", but, the first impression is as follow:

* surprisingly bass-heavy.
* a bit bright on the top-end, but I'll put this on the account of their non broken-in state and the source material.
* surprisingly detailed, for such inexpensive speakers.
* placement might be more important than one might think, being rear ported.

Again, this is just an initial review and I will have come back with a follow-up.  These speakers appear to be a very good bet for a secondary sound system.  Initial gut reaction would be that, properly fed, properly placed (too close to the wall and the bass appears to become muddy), these speakers should be able to sing.  They might well be quite an audio bargain.  Let's say that I got what I was searching for (wider frequency range) and that I do not feel ripped off.

*** A follow-up:

after roughly a week's worth of break-in and, in the mean-time, swapping the cheap Monster THX SP 16 cables for a pair of Kimber 4PR, the sound coming from these bookshelf speakers improved quite a bit.  Everything firmed up, the highs are less bright and the lows are less boomy (again, be aware that these speakers are sensitive to placement).  The sound is even more "punchy", more immediate (you _feel_ percussions a bit better).

Verdict?  When on sale, these speakers offer undeniably great value.  You get good sound for a very acceptable price (in my case, 278CAD).

If you want to argue, yes, in absolute terms, there are better speakers out there compared to the Polk TSi 200.  But in their price range and for the type of speaker (i.e., bookshelf-type), I'm not sure these Polk have much competition, if any.

Just considering what they can do (when properly fed), if you buy these speakers, you should not be disapointed.
694320
Purchased this little amplifier to power a passive Samsung sub-woofer (PS-EW1-2).  As others have noted, this unit does not come with a power adapter.

Ran an RCA cable from my Insignia soundbars sub-woofer output into the amplifiers right channel input.  Next, I connected the sub-woofers speaker wire into the Super Bass green connection adapter.  Workings surprisingly well.  I read some reviews that noted distortion on the Super Bass port, but for my application, no issues whatsoever.

This unit was also tested with a connection from my mobile phone into the MP3 input.  I then ran 14-gauge speaker wire from the amplifier into a bookshelf speaker and that worked well too.  At higher volumes, it was distorting a bit, so I wouldnt expect miracles from a $13 device.  Overall, I'm really happy with this purchase.
2724144
I purchased a pair of Dayton bookshelf speakers paired with a Lepai amplifier, as well as a Dayton 8" subwoofer. Plugging this directly into the back of my living room PC allowed me to have my subwoofer be active for non-5.1 signals so that my full 2.1 system would be utilized for movie-watching and music.

This cable retains a stereo signal to both female ends.
4067726
Took the output of my DVD player and split output to my TV directly and a separate one to my receiver. This gives me the option of playing movies with just the TV speakers not having to power up my the receiver, or through the receiver when I want the full effect of surround and larger speakers.