Rating: 
Summary: Amazing technology on CD
Review: If you need a portable CD player with added flexibility this is the one. Can take it to the beach without any worries. Comes with a hand -grip so you can hold it wall running/walking, with awesome thumstick control system. Also, with Atrac3 you can store all the music you will ever need on to 1 CD. The only frustration is not being able to use the CD's on other systems.
Rating: 
Summary: GREAT ITEM
Review: IT DOES JUST EXACTLY WHAT IT BOASTS ABILITY TO DO. NO DISAPPOINTMENTS
Rating:
Summary: Great, but not perfect.
Review: My family is really into music. We currently use about a dozen different players and have experience with 6 different brands of burners. IMHO, the chirping reported by some reviewers is an artifact of the recording process that is probably the result of disk defect or an underpowered computer housing the burner(either memory or less than state of the art operating system). Having said that, given a perfect disk, this player is capable of superior sound for a PORTABLE unit. It is well made and durable. Of course, it could weigh less. Of course, the sound can be improved by upgrading the ear buds. Sonny could also give these away free. The Sonicstage software is buggy -- ditch it and use MusicMatch or other time tested ripper/burner software to make your MP3 disks.
Rating:
Summary: Great, but not perfect.
Review: My family is really into music. We currently use about a dozen different players and have experience with 6 different brands of burners. IMHO, the chirping reported by some reviewers is an artifact of the recording process that is probably the result of disk defect or an underpowered computer housing the burner(either memory or less than state of the art operating system). Having said that, given a perfect disk, this player is capable of superior sound for a PORTABLE unit. It is well made and durable. Of course, it could weigh less. Of course, the sound can be improved by upgrading the ear buds. Sonny could also give these away free. The Sonicstage software is buggy -- ditch it and use MusicMatch or other time tested ripper/burner software to make your MP3 disks.
Rating: 
Summary: Chirp! Chirp! Chirp!
Review: That's the sound you'll hear about every fifteen seconds when listening to an audio CD in this player with the G-Protection set to position "1" and running off of two AA batteries. Switch to house current using the 4.5V AC adaptor and the chirps are less frequent because the CD drive motor no longer continually spins up and down (an energy saving feature when using batteries), but they still do occur. Although the interval of annoying chirps is longer with the G-Protection set to "2", sound quality may suffer. For some odd reason, there is no way to turn off this audio artifact of the antiskip algorithm. This regular electronic chirping is quite obvious on quieter pieces of music, and it can even sound like a badly played note. It totally interferes with the listening experience. If you have access to an audio test CD, play a track with all output bits set to zero, and you'll notice that the chirping is gone, suggesting that this audible artifact is the result of an engineering defect in the anti-skip implementation. Note that the chirp seems to occur when the G-Protection circuitry is buffering content, such as periodically or when the motor spins up and down, rather than due to DC motor noise or any disc surface defects such as scratches, dust, or fingerprints.This unit's cheaper cousin, the D-NF610, suffers from a similar G-Protection artifact, although in that case the problem is continuous (albeit relatively subtle) noisy cackling primarily in the left channel that significantly reduces the sound quality of the material being played. Both units were promptly returned, as neither unit's unique antiskip circuitry artifact is something that the listener should have to endure. A four-year-old Sony Discman D-T405 sounds MUCH better than either unit and has no such CD playback problem, whether the Electronic Skip Protection is on or off. The headphones used to test this unit were the rather nice sounding Sony MDR-E888 earbuds, which have a rather wide frequency response. Other headphones also allowed the chirping problem to be heard, although cheaper ones with less frequency response might not reveal the problem quite as well. Pros:
- The specs on paper are GREAT! This _should_ have been one awesome piece of hardware!
- Includes AM/FM/TV/WB tuner, which is highly desirable to avoid having to carry two separate units
- Above average sound quality for the tuner; even the CD player sounds good when it's NOT chirping! - Seems quite sturdy, although heavy
- Option to use rechargeable batteries, with recharging through the included AC adaptor Cons:
- Free annoying electronic chirping bird included at no extra cost! :-(
- Although the specs state that MP3 files up to 320Kbps can be played, in practice this is very much hit and miss. Sometimes it works; sometimes it doesn't. 256Kbps is better, but also very unreliable. Presumably that's why the manual highly recommends that MP3 files be recorded at 128Kbps. Yes, the lower bit rate seems to work fine, but the sound quality is obviously compromised, although not as badly as one might think.
- The included wrist strap is totally impractical for many activities, not to mention this unit is rather heavy at 12.2 oz (w/o batteries). A belt strap is badly needed, but with this player's bulk and unique button location, you may be best off fashioning your own with a nylon luggage strap.
- No backlit display
- Most definitely not for audiophiles who expect decent quality sound Other: At the time of this writing, if you call the toll-free Sony Network Portable Audio Support Line and enter the model number for this unit, your call will be disconnected. In order to speak to an agent, answer "I don't know" when prompted for the model number by the automated voice response system. Neither Tier I nor II technical support were aware of the sound quality problems of this unit, but that may be because of its recent arrival on the market. Sony - Please fix this antiskip audio artifacting, and you'll have a very sweet product indeed!
Rating:
Summary: Very Good
Review: This CD player is awesome.
Although there are some flaws, hence the 4 stars, it is the best of many disc mans I've used. Firstly, it is durable. If you are active, it is very likely not to skip (although if you ride your bike, with the player in your hand and that hand on the handle bars, the G-forces may cause it to skip). This diskman can also take a beating. I've dropped it multiple times during the 6 months I've had it, including a fall on a bike riding no hands with a croquet set, bag, and backpack. The Cd player went flying, skidded, the latch came open, the cd flew out, but the player and cd were still working fine. Now, the sound is ample, nothing spectacular, but passable. A negative is that if you change the song, you get a high pitch beep in your ear thats kinda annoying. Although you can't stop this beep, its still cool. Also this MP3 player is quite expensive, but no regrets. Also, sometimes there is noise that comes too, if you listen just to the diskman, you will hear the cd spinning (sometimes). I don't know if this is from dropping it so much or what. In all, I would definitly recommened this to all.
Rating:
Summary: Nice indulgance for the active person
Review: This is an excellent mp3 walkman. There are three main pros to buying this walkman 1) Skip protection
2) Long Battery life
3) Durability I can run, play basketball, and not miss a single beat. It's quite amazing. Equally impressive is the 60+ minutes of play time on two AA (rechargeable) batteries. The sound quality is excellent, but this should not be the main reason to buy this walkman. If you're an active person and want to listen to your CDs,mp3s,and radio, get this walkman ASAP. It's slightly pricey, but you will not regret it! The main con of this walkman is the lack of an external control. Skipping to the exact song you want can be a slight pain if the walkman is inside a hip pack. It's not a big deal because the control knob is easy to find and to operate. I would definitely not give up any of the skip protection or battery life to get this feature.
Rating:
Summary: Bummer
Review: This is the finest and most durable CD/MP3 Player I have ever found. The buffering is very good. I tested mine by playing Indigo Girls while banging the Player on my Dash Board. HARD! The Player did not miss a beat. It is water resistant enough for rain. I would not scuba with it. But, You could Rock Climb with it and take a leader fall. I am buying two more.
Rating:
Summary: The Finest CD Player I Have Found
Review: This is the finest and most durable CD/MP3 Player I have ever found. The buffering is very good. I tested mine by playing Indigo Girls while banging the Player on my Dash Board. HARD! The Player did not miss a beat. It is water resistant enough for rain. I would not scuba with it. But, You could Rock Climb with it and take a leader fall. I am buying two more.
Rating:
Summary: Sony D-NS921F
Review: This is the first time that I have bought myself a CD walkman. Being from Sony, this player lives up to its name and the sound quality is amazing. My main considerations before buying this player was that it plays MP3s too. Surprisingly though they do not mention the fact that this unit can also be used as a recharger unit for the NiMH batteries (Batteries are not supplied with the unit though). An AC adapter is also supplied although the sonystyle website does not indicate that. The radio part (AM/FM/TV/Weather band) all works great. The unit is great to handle and the design is pretty ergonomic. I just tried out some sample ATRAC tracks on a CD-RW disc and the quality is decent. All in all this unit rocks! I'd definitely recommend it.
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