Here is a link to my full review: http://www.head-fi.org/forum/thread/563998/review-ufi-ucubes-compact-portable-usb-powered-speakers-that-actually-sound-good#post_7627759
 
In summary, these are very useful little speakers that sound darn good. They fit into spots that most other speakers wouldn't dare to go, like up against side or rear walls. And the USB power means that they can be taken on the go if need be.

See my detailed review here:
 
http://www.head-fi.org/forum/thread/561463/review-analog-design-labs-svetlana-2-tube-headphone-amplifier#post_7588283
 
In summary, this world class SET amp is a brilliant choice for someone looking for the benefits of classic tube sound while avoiding the traditional weaknesses. The manufacturer has been around for a long time in Korea but is just now starting to expand to new markets. Highly recommended. 

http://www.head-fi.org/forum/thread/559407/review-resonessence-labs-invicta-new-high-end-dac-amp-playback-system
 
See above for detailed review. In short: this is the best DAC I've ever heard, and I've heard quite a few including more expensive models. When the engineers who designed the ESS Sabre DAC chips make their own DAC, the world should stand up and take note. This is how it is done. For a cost no object system, this is very highly recommended.
 
 

 http://www.head-fi.org/forum/thread/555151/review-lars-audio-dac1-mkii
 
See above link for my in depth review. To summarize: This DAC is warm and full sounding, with a nice balance of detail versus smoothness. It is basically the same exact DAC as the Decware Z-DAC which sold for nearly $1,000. Highly recommended. 

http://www.head-fi.org/forum/thread/556123/review-and-impressions-thread-beat-audio-cronus-and-supreme-rose-cables-for-custom-iems
 
See above for complete review. In summary: The Supreme Rose cable is a great entry level cable for someone wanting to dip their toes into the world of aftermarket cables. Even if you don't believe in cables having an audible improvement, the excellent looks, comfort, and build quality are hard to argue with.

http://www.head-fi.org/forum/thread/556123/review-and-impressions-thread-beat-audio-cronus-and-supreme-rose-cables-for-custom-iems#post_7505113
 
See above for complete review. In summary - If you believe in cables improving your sound, this might be one to check out. Even if you don't, this cable has exceptional build quality and functionality to go with its good looks.

http://www.head-fi.org/forum/thread/551173/review-violectric-hpa-v200-amp
 
See above for my in depth review. In summary: This is one of my all time favorite amps. I find that it is a worthwhile upgrade even over great budget amps like the Matrix M-stage or Yulong A100, without costing an insane price. If I could do it all over I'd probably get this amp as my one and only amp, or perhaps supplement it with a more colored tube amp. I am seriously considering offloading my expensive Luxman P-1u because I haven't really touched it since obtaining the V200. It's that good. 

http://www.head-fi.org/forum/thread/552996/review-westone-ac2-dual-driver-custom-in-ear-monitor
 
See above for my in depth review. In general, the Westone AC2 is a great addition to the somewhat crowded entry level custom IEM market. It has its own flavor that will surely please some people. What would be the point if Westone just released another UE4pro/LiveWires sounding custom, at the same price? We already have those. 

http://www.head-fi.org/forum/thread/506715/audio-gd-reference-7-loaner-program-usa/315#post_7407784
 
See above for my complete review, you might have to scroll down a little.
 
In summary this is a fantastic DAC. Worthy of all the praise it has received, I would not hesitate to recommend it to anyone looking for a high end DAC with a somewhat down to earth price. 

See full review here:
 
http://www.head-fi.org/forum/thread/548608/review-violectric-v181-balanced-headphone-amp#post_7395114
 
In summery, this is an excellent sounding amp. Warm, punchy, smooth but still highly detailed and well balanced overall. Sounds even better in balanced mode. Highly recommended. 

http://www.head-fi.org/forum/thread/540631/review-yulong-u100-compact-usb-dac-amp
 
Above is the link to my full review. In summary:
 
This is a great little USB DAC/amp for the price. Nice clear transparent DAC section paired with a somewhat warm and almost tube-like amp. There are plenty of good options out there in this price range, and the U100 is one of the best I've heard. Worth a try if you want a sub $250 USB DAC and amp combo. 

http://www.head-fi.org/forum/thread/535630/review-yulong-a100-headphone-amp
 
See above link for my detailed review.
 
In summary: The A100 is to amps what the D100 is to DACs. Very neutral, accurate, and transparent. It's an excellent value for the price. I docked it a star in the "Design" section because it omits balanced ins/outs, which seems odd given the D100 does balanced.

http://www.head-fi.org/forum/thread/530335/review-1964-t-triple-driver-customs-from-1964-ears
 
See above for my detailed review, as well as a link to an excellent review by user lJokerl. In summary: this is the best entry level custom that I have heard (and I own several). Very pleasing sound signature, mostly neutral but slightly boosted bass and relaxed highs. Works well with a good portable DAP but really shines with higher end gear. Regular price $450 but currently on sale for $350, unknown how long that will last. A good buy at either price.

http://www.head-fi.org/forum/thread/528473/review-anedio-d1-dac-my-new-reference-dac
 
That's a link to my detailed review. In summary:
 
The best DAC I've ever heard. The only thing that matched it was the MBL 1511E which is a $9000 DAC. The Anedio is identical in sound, at a much lower price, thus by far a better DAC. Please read my review for further info.

http://www.head-fi.org/forum/thread/524282/review-unique-melody-miracle-6-driver-custom-iem
 
That's my full review. In summary: These are simply the best customs, and possibly the best headphones of any type, that I have ever heard. I prefer it to my JH13pro due to it's better deep bass response and more natural tone.
 
These sound great paired with a simple portable DAP. But when driven by a high end source and amplification, they respond by becoming world class performers. They remind me more of my Sony R10 than any other headphone I've heard, but with better bass and a much smaller price. I wish more people had the pleasure of experiencing these.

http://www.head-fi.org/forum/thread/520449/review-hot-audio-dac-wow
 
The above link is my full detailed review. In summary: This is an excellent budget DAC, and the best sounding model I have heard for under $200.

http://www.head-fi.org/forum/thread/484033/review-vivid-technologies-v1-usb-dac-portable-amp
 
That's my in depth review. In summary:
 
The Vivid V1 is a deceptively powerful little amp. It performs pretty well with almost any headphones, including full sized and IEMs. It has a somewhat unique forward and fairly aggressive sound signature, which is surprisingly pleasing. It pairs especially well with the Sennheiser HD600. The battery lasts a long time, and the USB DAC function is handy; it isn't exactly a top notch DAC but is almost certainly better than the one in your laptop.
 
Several people besides me have made positive comments about this amp, and for the price I think it is great entry level product.

http://www.head-fi.org/forum/thread/504037/mini-review-digizoid-zo-portable-subwoofer
 
That's my whole review. In summary:
 
The zo is an interesting product. It seems like it would be just marketing fluff, but it actually does work like they claim. I was able to get (seemingly) hard hitting bass out of some headphones that had never been able to produce anything like that before. As a portable amp, the zo is a bit better than most cheaper amps you would find, such as the various cmoy based designs on ebay. But the real star of this show is the smartvector bass contour EQ feature.
 
My only issue with it is that the target market is a bit ambiguous. It seems like it would be an entry level product for beginners, but that's decieving.... most really cheap consumer headphones are already too bass heavy so this won't pair well. If you have a decent budget headphone or IEM, it might arguably be better to spend the $100 on an upgraded model rather than the zo. So it ends up being enthusiasts who already have several headphone models who will get the most out of the zo; but those are the same people who are likely the most skeptical of this this type of product. At least digiZoid offers a free trial period.
 
I'd like to see this technology licensed to some higher end equipment. This could be one of those things like crossfeed that some people would get a lot of use out of.

http://www.head-fi.org/forum/thread/484235/review-audinst-hud-mx1-usb-dac-amp
 
That's my full detailed review. In summary:
 
The Audinst is still one of my most often recommended pieces of gear, especially for people just getting into this hobby. As a DAC it is detailed and transparent with no specific weak points. As a headphone amp it is very poweful but of course has it's limits (could use more refinement but what do you expect for the price?). The overall package is very well done, with lots of nice features like an optical out for transcoding from USB to toslink, a front panel switch for disabling the RCA output when listening to headphones, and variable volume outputs allowing it to act as a pre-amp. It even lets you swap out opamps if you are interested in tweaking it a bit.
 
There are plenty of great products in this price range but I keep coming back to this as my recommendation.

http://www.head-fi.org/forum/thread/494832/review-fournier-hta-1-hybrid-tube-amp-excellent-budget-amp
 
That's a link to my full review. In summary:
 
The Fournier HTA-1 is a small hybrid tube amp. It is made by an enthusiast who sells on eBay under the name "Linear Designs". He designs and hand builds each amp he sells, and is very knowledgable about this hobby.
 
The sound is fairly "tubey", with an excellent soundstage. Mids are the prominent focus in the spectrum, although lows and highs are quite nice as well, and transients are startlingly good for such a small cheap amp. It easily performs as well or better than a HiFiMan EF5 when I did a direct comparison.
 
One minor downside is that it doesn't quite have a "black background". It is completely free of any tube related hum, but does have a slight "hiss" regardless of volume level. This his makes it unsuitable for use with IEMs, although Linear Designs will sell you a nice impedance adapter for $15 that mostly takes care of the problem. With the adapter in place, the HTA-1 does a great job with IEMs, although I still find it's biggest strength to be when powering Grados and other full size cans.