Finding recordings that used a Roland Jazz Chorus amp is like seeing a field of flowers and asking which one used water to grow. The JC-120 is a studio staple and as such, while not a ton of guitarists will mention owning one, they have been using them for clean tones on albums since the 70's - probably some absurd percentage of albums too. And while I don't know any particular metal albums, I would not be surprised if it found it's way on to many if even in a small way. It's there in the studio and it gets used frequently when looking for pristine cleans.
I would never part with my JC-120, love it far too much, the distortion dosent even work on mine and never even been bothered to fix it.
Apologies for dredging up this old thread but I just couldn't resist. Like
@Jind said there's a JC-120 in every studio and likely on every album since the late '70's.they're known for flawless cleans, even turned up to 10. Plus the chorus & reverb are 2nd to none. The vibrato is OK and the distortion is decent for playing Sabbath, Zeppelin & most '60s -'70s rock. One overlooked attribute is that perfect clean is… well, perfect for layering effects onto. A 60w blank canvas just waiting for someone to go Jackson Pollock on.
@PaulSOCW, if you're reading this I sincerely hope you still have your JC-120. I pawned mine long ago for much too less than I should have. I shouldn't have pawned it at all but what's done is done. Don't let your band mates "borrow" it and use it as a tabletop to leave their rapidly warming cold beers on. Or even better, they pull the electronics rack out and take a soldering pen to it in an effort to "fix" a loose wire, when they actually just blew a fuse in the garage and a phone call to me, an electrical apprentice (back then) could've saved us all a lot of time and money - just sayin.
Enough of my past, issues. If anyone reading this has the opportunity to pick up a JC-120 new or used, for a halfway decent price, jump on it. You won't be disappointed, especially if it's used, in working condition from the '80's or early '90's, when they still had the 3-way selector switch for chorus /vibrato.
Solid amp and I wish I still had mine or that I could find one like I described.