Feature:
The main reason I bought this product was for the vocal canceling feature. It purports to cancel out vocals and has a disclaimer that it may not completely cancel ALL vocals on EVERY track. After trying a number of different Cd's, I've come to the conclusion that it doesn't completely eliminate the lead vocals on ANY track. All this feature does is block the channel that the lead vocals is recorded on, which sends it to the background, instead of the forefront. However, you can still clearly hear the vocals. What's more, it also dims the sounds of other instruments, such as lead guitar. I bought this product thinking it would ELIMINATE lead vocals, and it does not. I can get the same effect on CD burning software such as Nero 5.0. I don't need to buy a separate $150 machine for that(almost $200 after you buy the necessary AC adapter and tax) As for the other features, such as slowing down the music and changing keys etc., that works just fine, although when slowing the music down to its slower settings, it becomes choppy.

Quality:
I can't really comment on that because I'm returning it after only a couple of hours of use. It's lightweight and probably wouldn't take a shot very well though

Value:
If vocal canceling is your objective, don't waste your time

Sound:
Sound was ok. Not bad, not exceptional

Support:
not applicable

Feature:
Tascam has put a lot of features in this unit for usability. They do not include accessories such as the AC adapter which is really needed since the batteries do not last very long. The unit takes 4 "AA" batteries and they last about two full CD's.

Quality:
I wouldn't want to drop it, even once!

Value:
It has more features that a standard CD player and is priced in the same range. Just be prepared to buy lots of batteries!

Desirability:
I returned it for a refund.

Support:
not used.

Overall:
Tascam can make this a great product if they would include the accessories that are really needed to make this a good value.

Feature:
Does not eliminate vocals on anything I listened to. Seems to make stereo signal mono and cut overall sound while leaving the reverb sound of vocal in place. Did not come with a power cord. Effect are binary, Changing keys results in a jagged sound due to the time stretch/reduction processing

Quality:
Inferior. CD's skip for no reason. The play button works intermittently and it is only after turning off the power button for a minute or so that it seems to reset. There is a buzzing in the earphones between tracks when it does play. Also the brand new CD I was using skips in the unit. More of a toy than a tool. Yes, the price is only $100 but I would rather pay twice as much and get something useful and built to last.

Value:
The value may be short term amusement, for some, I guess.

Desirability:
I want it not. I want it out of the house.

Sound:
Humms between songs. When the instrument/vocal kicks in so does hissing - probably due to built in gate to mask the noisy circuitry.

Support:
Unknown - have not called Tascam

Overall:
Not only not satisfied, not amused. If this was positioned as an entry level unit for 60 or 70 dollars and a higher grade unit at a higher price, I could see it, but the CD drive (at least on this unit) is likely to be useless in short order. Unit behavior is inconsisten and unpredictable.