The 900 doesn't have a solid state pre-amp, but does use some clipping diodes to create heavier distortion. That being said, I personally like the 800 much better.sesroh said:ya im going to go for a jcm 800. the solid state preamp of the jcm 900 put me off a little. if im going to get a tube amp i wanna get all tube.
ah someone told me it had a solid state preamp. ah well i still want the 800Scottone said:The 900 doesn't have a solid state pre-amp, but does use some clipping diodes to create heavier distortion. That being said, I personally like the 800 much better.
I just ran across a bunch of schematics for the JCM900 series, and as it turns out, the pre-amp also contains op amps that are used for both the boost and reverb circuitry. The pre-amp also contains 2 12AX7's, but much of the gain comes from the op-amps.sesroh said:ah someone told me it had a solid state preamp. ah well i still want the 800
i agree. i want a jcm 800 but i cant afford the extra so i might have to go for a 900. im going to be playing through an orange 2X12 that im picking up this weekend so thats why i cant afford the jcm 800. but stillRipper said:There are some good mods for the 900s out there too. I mean if you happen across one at a really good price, try it, you might like it. I've played lots of 800s that weren't that great and some that were fantastic. it's one of those things that you need to try and see for yourself.
Good point...the 25th aniversary one's did as well.gtrguy said:Keep in mind that the JCM800 models with channel switching- 2205 and 2210 also used clipping diodes for distortion. The early vertical input 2204 and 2203 models are the ones to get.