Originally Posted by thevisionseeker
I would say stick with the 900. I can't really relate to most of the posts so far but I've had about 4 900s and never let me down. ALL were 5881 or 6L6s though. If you get a EL34 get it modded for 6L6s its going to really give you more boom.
I used to use a JMC900 4100 with a 4X12 with Celestion G12T-100s. Recorded at 5 different studios with that set up and every enginner was amazed at the tone.
I sold that rig a few years later and really really missed it.
I play all originals and we would literally go from very ambient mellow bright to hard hitting balls to the walls.
The 50watt will break up faster if you keep the pregain around 5/6.
I know own a JCM900 4502 2x12 50 watt combo that I had modded to 6L6s and put the Celestion G12T-100s in. I run a Sonic Maximizer in through the effects loop but really only use it for the distortion.
The cleans are nice but not super bright.
I tell people, if you like the gain, and the clean but want more punch etc... look into speaker replacement.
Hope that helps.
I loved my JCM900. I even used El84s, and in fact I've heard a lot of guys moving to 6l6s or KT88s for a smoother or sharper sound. If you have a guitar with humbuckers, the 900 or 800 may be perfect for you. It's one of the nicest amps I've ever owned. It's very versatile. It works super well with new tubes. A GREAT live amp. I built a cabinet for it and that made all the difference.
However, I don't play with humbuckers anymore. As well, the tone is very 1996. That's all well and good, but I needed to find a "new" sound a couple years ago and it took me two years before I found it. It was pretty hard to replace it.
It's really unavoidable that if you play with a single coil guitar of any kind the 900 may sound a little harsh, in that case I'd strongly recommend a class-a amp or an amp made by Fender or Silvertone. I haven't found anything else that does the trick.