The CNet.com reviewed iRiver E100 as follows: 
Product Summary
The good: The Iriver E100 is packed with pretty much every feature in the book--photo and video playback, an FM radio, all recording capabilities, compatibility with both Windows and Mac, extensive audio file format support, bookmarking, microSD card expansion, even external speakers--yet it's inexpensive and easy to use.
The bad: The Iriver E100 has a cheap, plastic feel, and the interface is very basic. The clickpad is not totally responsive, and some navigation is sluggish. D-Click navigation isn't optimal for the control pad setup. No integrated podcast support.
The bottom line: The Iriver E100 is a decent choice for people who want a ton of features in an easy-to-use package, but if you're after speedy navigation or top-notch sound quality, look elsewhere.
Reviewed by: Jasmine France
Reviewed on: 04/11/2008
Released on: 04/15/2008
For a long time, the Iriver Clix stood alone as the highest-scoring MP3 player on CNET (it is now tied with the iPod Touch). This is both good and bad for Iriver: good, because it helped to sell more units, but bad because now the company has a stellar player against which all of its future offerings will be compared. The E100, Iriver's first true U.S. release since the second-gen Clix, falls a bit flat, but it's not the worst budget option on the market. We certainly appreciate the competitive pricing--$109.99 and $159.99 for the 4GB and 8GB models, respectively--and plethora of features, but the player suffers from irksome controls, an uninspired user interface, and sound quality unbefitting to the Iriver reputation.
Click pad irritation
We wouldn't necessarily say that the Iriver E100 completely fails in the design department, but it could definitely use some work. The main issue is the control pad--it's just bad. It's plastic and feels cheaply constructed. The center button is small and recessed, which makes it difficult to press. Plus, the buttons are slightly unresponsive, and we experienced some delays when moving between selections. Also, when on the playback screen, the D-Click orientation of the pad doesn't quite mesh with the screen above. The center key is play/pause--that makes sense. Then, it's surrounded by a four-way pad with arrow indicators. However, the right and left buttons don't serve to shuttle through tracks; instead, you press up to go back and down to go forward. The right arrow acts as a shortcut/contextual menu key, while the left backs out of screens/menus. It acts exactly like the pad on the Clix, but on the Clix the control pad surrounded the edges of the display, so it worked with the clarification provided by the soft "keys" on the screen. For the E100, it's not as logical, since the soft keys are nowhere near the actual controls.
Design, interface, and other featuresFortunately, the rest of the E100's design isn't quite so bad, although it has a decidedly plasticky feel. The player comes in a variety of colors--black, brown, white, pink, and sky blue--but none of them quite pop. The QVGA (320x240 resolution) screen is nice and big, measuring 2.5 inches diagonally. Its placement and the size and shape of the device makes it look a bit like a
Zune clone, not that that's a bad thing necessarily. Around the edges of the player, you'll find a power button, a dedicated volume rocker, a hold switch, a mic, and a reset hole. The bottom side of the unit houses a standard mini USB port for syncing and charging as well as two 3.5mm jacks: one for headphone out and one for line-in. A microSD card slot built into the top side allows for memory expansion, while two speakers on the rear let you share the tunes. Both are nice extras, though don't expect stellar sound from the speakers.
The Iriver E100 has plenty of other features to keep you busy, although the ability to customize the interface to your liking is not one of them. We're a bit disappointed by this, since the overall interface is fairly bland. The main menu is icon-driven, but it's all gray and black, with a touch of red. We'd prefer some more color, or at least the option to change the wallpaper. Still, it's not a deal-breaker, and some users may appreciate the starkness. Other features include photo (JPEG, BMP, PNG, GIF) and video (AVI, WMV) support; voice and line-in recording; a text viewer; and a built-in FM radio with recording capability, autoscan functionality, and up to 20 preset slots. We're also pleased to note that the E100 can sync with both Windows and Mac PCs.
Music to your ears?
Of course, audio should be a top consideration when selecting an MP3 player. The E100 succeeds somewhat in this area, but doesn't hit a home run. On the plus side, the player offers extensive file format support: it plays MP3, WMA, OGG, FLAC, and ASF files and supports subscription services such as Rhapsody. It also offers nine EQ settings, including SRS WOW and a five-band customizable EQ. In addition, the unit offers A/B looping, lyrics display, shuffle and repeat modes, and bookmarking. Plus, there's a neat fade-in feature that gradually increases/decreases the volume on a track as it starts/ends.
The downside is that music doesn't sound all that fantastic; it definitely doesn't stack up to the Clix, or similarly priced players such as the Creative Zen V Plus. Namely, audio wasn't as crisp or as clear as we'd like; many songs (notably, Amy Winehouse tracks) had a slightly muddled quality to them. Also, we found that mids were missing the warmth and richness you get from a device capable of producing top-quality audio. On the plus side, bass was tight and present, and activating the extra bass feature helped it thump. Still, EQ settings in general did little to achieve truly great sound, although the average listener will probably find that the E100 sounds just fine. Another bummer is that any content you add via a microSD card doesn't integrate seamlessly into the music menu. Instead, you have to access the external memory separately. The rated battery life of 25 hours for audio and 5 hours for video is solid, and we hope to match it in our lab testing.
There are various colors.
Here are the earphones.
Black is also available.
Its excellent sourround sound with 3 channel speakers makes the listenner feel comfortable and convenient.
YA-SBR510 is compatible with not only Bluetooth, but also with optical, USB, and AUX analog. It is the best for music and movie. Place it anywhere you want to listen to without connecting long cables.
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Pros:
Samsung's fourth-generation Blu-ray player will be hitting store shelves slightly sooner than expected elsewhere, as the company announced during its CeBIT press conference that worldwide release will happen in April, rather May as previously announced at CES. The BD-P1500 updates the well-received BD-P1400 player with Profile 1.1 / Bonus View goodness, as well as 7.1 PCM, Dolby Digital Plus, Dolby TrueHD, and DTS-HD MA audio support for $399. Pick up one of these up next month, or wait for the BD-Live enabled DMP-BD50 or BDP-S550? For those in need of legacy HD DVD support, still word whether the BD-UP5500 combo player's release date has been affected by Samsung's "focus" on Blu-ray. 
