Rating: 
Summary: don't waste your time
Review: so i was all "hey rio rocks...lemme get this."
but no. it sucks battery power like a.... yeah. this thing angers me! i'm going to take a bat to it, like in office space. i have to put batteries in twice a day. TWICE A DAY. and i use it less than 3 hours a day. it skips constantly and ...i really HATE this thing. it is by far the worst purchase i have ever made. GO, SAVE YOURSELVES!!
Rating: 
Summary: You get less than you pay for
Review: I was given a (new) Rio SP90 in August 2002. I was pleased with it, right until it completely stopped working in December 2002. I returned it under warranty, and Sonicblue sent me a refurbished Rio that didn't work properly from the moment I received it.In terms of features, the SP90 is adequate but not exceptional. Navigation through directories is well laid out, and the supplied EQ profiles yield a comfortable sound. The headphone output is low hiss and the sound quality is generally very good, especially on high bit-rate MP3. There's no display backlight, though, and no remote control. The design is also convenient. AA batteries mean it's quite thick, and it's a little large for a pocket. But it's fine on a table or in a bag. The anti skip doesn't work well. "Up to 120 seconds" on MP3 translates to "not long at all" on VBR tracks which peak at 320kb/s, even though the average bit rate is more like 150kb/s, which is disappointing. The SP90 has good sound and adequate features, but is ultimately let down buy its build quality. The MP3 player my SP90 replaced is back on duty, working fine after lasting much longer than the SP90 before the Rio was purchased, and showing no signs of failure. And to send out a basically broken unit as a warranty replacement is shoddy customer service. Approach with caution.
Rating:
Summary: WARRANTY IS TOTALLY WORTHLESS-BE WARNED!!!!!!
Review: This is a very decent standard player, though the earphones are chintzy and no A/C adapter. However, after mine died, I sent more than dozen emails to CS to try to get it replaced. All I got was a standard email telling me to try another cd! The machine absolutely refuses to recognize any kind of CD (including commercial audio) after only 3 months of use.
I also tried calling customer service (a toll call) but gave up after more than a 45-minute wait.
Buy a Sony, Phillips or something similar that has CUSTOMER SERVICE & PHYSICAL SERVICE IN THE USA.
Rating:
Summary: just quit working!
Review: Bought this as a Christmas present for my daughter and it has already stopped working - and we are not even at the end of Jan! Not misuse or dropping - it is just inferior quality. This was a second attempt at this brand. A previous RioVolt CD Player - different model also proved very unreliable. I am now going to attempt to contact the company and get reimbursed but I am not optimistic.
Rating:
Summary: Short-lived
Review: This player worked beautifully for about 8 months. It is now completely dead and non-functioning. I can't believe I paid all that money for something that only worked for 8 months! What a waste.
Rating:
Summary: they break down aftera while
Review: I have had now two different Rio Volt SP90 stop working out of the Blue. I probably used each for around 3 months and they stopped working.
The first stopped reading CD's, the second stopped spinning. It seems to be common for this product. Stay away! (While it worked it was very good, though it skipped a LOT, I couldn't even walk with it in my pocket).
Rating: 
Summary: great product
Review: I would recommend this product for anyone....I've got one for over two years and it's still in perfect working order....if you want a CD/Mp3 player to just simlpy listen to music...then this is your best buy
Rating: 
Summary: Great player for the price
Review: I've had this puppy for over a year now and it still works flawlessy. I've had no problems playing any type of recorded media and the sound this thing pumps out is pretty impressive. The anti-shock is really good, I can shake it around without it skipping. My major gripe however is the battery life. This thing sucks down batteries like water. Also, you can't turn off the anti-skip, which some companies let you do to preserve battery life. Another minor thing is that there is no backlit display. It's a nice feature to have, but I can get around it. I now use the player in my car. I bought a power cord for it so the battery issue is no longer a problem. Solve that, and this player would be at the top of it's class. Final recommendation: It was a great player for it's time, but there are now a lot of other lighter, less battery hungry players out there for the same price.
Rating:
Summary: Good unit, no problems after 2 years ownership - simple tech
Review: Sure there are new fancier units which can store more and are more compact, but if you are looking for a unit that will play regular CDs as well as CDs with MP3s and WMA files, this one does the trick. With only a disk to spin, the battery life is not bad and it uses trusty old AAs. Once the disk spins and the song is loaded into memory, the disk stops spinning to save battery life.The firmware is user-upgradable which is a plus, because you can update the unit for new sampling rates and get new features added by flashing the unit. It uses cheap and reliable CDRs, so no memory to keep up with. The Nomad would be the best of both worlds if you want a hard disk based unit and CDR/CD capability.
Rating:
Summary: If you can get it to work!!
Review: My RioVolt SP90 sounds great the few times I've heard anything from it. With any little movement the adaptor loosens and no more sound. The little dancing men are wothless.
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