Feature:
This should sell with an AC adapter. Having said that, it's fairly feature laden.

Quality:
It seems fairly well built. No problems so far, and I've had it for at least a couple years.

Value:
It's a little pricey at $295, considering its age and other options now available. But if you need one, this is a good and versatile unit.

Desirability:
It may not be too sexy.

Sound:
If you hunt, you can find good sounds and modify them a bit so they don't sound totally canned. I wish there were better high hat options and more electronic drum sounds. Kick drums and snares sound fairly good.

Support:
No need.

Overall:
If you can't find a real drummer and need something just to carry the beat, this will do the job. Read the manual, be aware of features that help minimize that robo-drummer sound (if you don't want that sound), and use it thoughtfully. It can be great for the right types of songs and lousy for others. It's fairly versatile and even fun to play with. If you want to store whole songs on this unit, find a paper and write down your settings. Otherwise you'll forget which song and kit you stored where.

Simple to use. I had recorded my own tracks within an hour from opening the box.

Feature:
It really sucks that it doesn't come with an AC adapter.

Quality:
Good Quality.

Value:
Definitely worth the money.

Desirability:
The pads can be a little bigger, they are way too small.

Sound:
I tell you what, I have mines hooked up to a Peavy amplifier supported by stereo speakers and it sounds awesome. So if it's live music your looking for then this is definitely what you need. It's not a MPC2000 OR 4000 but it gets the job done if you know how to make beats.

Ease of Use:
The most drum machine friendly.

Support:
Haven't had to use it yet so I guess that speaks for it.

Overall:
I got this product to prepare myself for the next step, MPC 2000.

Save on shipping costs -- order the Boss PSA-120T ac-adaptor at the same time (unless you want to rely on AA batteries all the time).

Feature:
i like all the features, i like how its so easy to use and it has bass sounds but i dont think its worth $285 i got it for 150 with the ac adapter

Quality:
so far it has been good iv has ut for almost a year now and iv used it alot

Value:
its worth what i paid for it

Desirability:
its preety sexy but could use some bigger pads i dont know what they were thinks when they made them so small

Sound:
good sounding 808s 909s bass sounds alright

Ease of Use:
really easy to use

Support:
roland/boss is alright

Overall:
it been good to me and fun to use

Feature:
Bad- Volume control in back. Have to hold down the tempo tap button and rotate the large knob to adjust tempo.

Quality:
After 3 months of owning this (I bought it new), I get an errors message ("bak battery low"). This infers that the battery used to store user information is low. I only use this unit for home use and have only used the presets (haven't stored any of my own stuff yet). This pisses me off in that I now have to take the unit back to the dealer to get a new battery installed.

Desirability:
If I had to do it over again, I would look at a different unit. Possibly something made by Yamaha. Always had good luck with their equipment.

Support:
Really don't know at this point. Will find out when I take unit in to get battery replaced.

Feature:
This is still a pretty basic unit, unless like I wrote a Novel above explaining, you are studio savvy and run the Boss DR 670 through a quality digital recorder like my Korg. The price IS too high, Alesis's new SR 18 picked up on Boss users' gripes and got the backlit LCD (A MUST!!) and on board effects. Roland, I know you're latest greatest drum machine, the 880? Anyway, perhaps that's the alternative, but you got competition when Alesis starts answering our woe is me's, and for much less!! I've been a faithful Boss Man, now its your turn!

Quality:
The materials used for the casing are just like my Korg, and prone to cracking and sweat oxidizing. My sweat is like the Alien's, either that or this plastic they use just ain't cuttin' it. Maybe a strip of 2 inch quality metal around areas where your hands are busy or you accidentally drop your bowling ball onto the edge of the 670.

Desirability:
Its got no flab but certainly no six pack abs. It should be red, in heavy duty die cast metal casing, with extra large pads for my big fat sausage like fingers.

Sound:
I write original songs in the style of Alice In Chains / Pantera, but its still MY sound; if you heard it on the radio (maybe one day!) you would not accuse me of cloning after Godsmack, Nickleback, STP, etc. it would sound NEW and original. I used the DR 670 in conjunction with a Korg D1600 Digital Home Studio w/40GB hard drive, running stereo out from the Korg into a pair of active Samson 64a Resolv near-field monitors. I first learned all that it wasn't useful for before finding what it WAS applicable to. I "built" a custom kit and stored it under a number, in the User section. I found it easy to then call the kit up. It did take a long time to achieve the closest thing to a real drummer, by using the Korg's EQ, changing the 670's bass drum, snare, hi-hats closed and open, tom toms and cymbals PARAMETERS until I had my "metal / thrash core drum kit". The internal bass: I found the Stick (not the Slap, that's the one I recall was Instant Sienfeld). Again, I had to tweak its parameters, and EQ'd the separate choices of Korg's Input or Output EQ. I left INPUT alone, OUTPUT I applied 2.2Khz shelved mids, 4.5 Fixed Mids to cut through the thunder wall of stereo guitars. You have to go DEEP into the Boss DR 670. Most reviews are guys using it live and most complaints seem to come from those who have little patience for technical stuff, want to turn a unit on and Kaboom, The God Of Drum Machines speaks. Also, I applied Korg's Wet Plate or Room Reverb to the output, not the input, which achieved a Van Halen or John Bonham effect. Most people who have heard my completed songs asked who the drummer was, c'os he was killer. That's the best way I know to determine if you've succeeded with the Boss DR 670. BIGGEST GRIPE: in the studio, its still the 'ol battle with drums too loud, not loud enough, hi-hat disappears on certain songs, or bass drum, whatever. Roland needs to add on board EQ at least.

Ease of Use:
This is an easy unit to make friends with, the manual is as clear as can be. Don't use batteries, EVER, its just stupid to use 'em live all c'os ya can't be bothered to plug in a Boss AC adaptor. However, Boss, inlcude it in the box, don't make us pay and pay or we'll cry and cry! WE ARE BOSS, HEAR US ROAR!

Support:
Never needed them. Yet.

Overall:
It will always have a use in my studio or live. Nothing is truly obsolete except the musician who wants outdated song writing to sound NEW through the magic of a drum machine that has a snare with 100 voicings, one of which is bound to cover up lousy songs. I'm a real nice dude, huh?

Roland engineers have awakened from their idiocy and, unlike the DR770 (what a joke!!), they designed this machine to start at the beginning of a measure, no matter where it is stopped. However, in staying with their "lack of forethought" process, they decided to offer this machine at a lower price by placing the volume control on the BACK of the unit where you can't see it and where you have no relative idea of what the current setting is, nor any relativity to determine where it needs to be set for the next song. Well, if that isn't enough, Roland engineers decided that musicians, when performing "live", can stop using both of their hands to play their instruments so they can even slightly adjust the tempo (on-the-fly) of the song they are in the middle of playing -- because this unit requires you to hold down a tempo button with one hand, while you turn the "ONE" rotary wheel provided on the machine to change the tempo. Hey Roland, do you think you can come up with something a little more cumbersome and maybe offer it at yet a cheaper price??? And by the way, thanks for having such a pitiful website to support your products. Trying to obtain any detailed information about Roland products from their website, particularly operating manual info, etc., is a BIG JOKE!!!

Unit is fragile factory will not support warranty. Repairs are very slow and extermely expensive. Best to employ live drummer (even if he's a drunk). Never seen a more poorly manufactured unit.

It's kind of complicated to change drums sounds-not user friendly. I thought I was getting something much more detailed and easier to use. The drum patterns are o.k. but I dont think the drum voices are that great.