Ok, so I got a new head to add to my Gibson. It's a Sunn 350b Bass Head. It's a Sunn 2000s with a solid state rectifier and a different name. Sounds amazing!
right on dude.

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Ok, so I got a new head to add to my Gibson. It's a Sunn 350b Bass Head. It's a Sunn 2000s with a solid state rectifier and a different name. Sounds amazing!

Here's mine. Mid-late 1963 JTM45. Yes, it's a bass head - 'bass' is roughly scratched into the back panel (Marshall were so hi-tech in those days). There's only a couple of caps difference between the guitar, bass and PA versions. Output is just over 30W. Running KT66's. Sound... well, it gets more guitar than bass use, but it's just probably the best amp I've ever used. Sorry for the lousy pic...
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Just passin' the love on down the line...And you aren't?
Updates on the tube swap, please...I've been looking at tube upgrades myself.
Here's mine. Mid-late 1963 JTM45. Yes, it's a bass head - 'bass' is roughly scratched into the back panel (Marshall were so hi-tech in those days). There's only a couple of caps difference between the guitar, bass and PA versions. Output is just over 30W. Running KT66's. Sound... well, it gets more guitar than bass use, but it's just probably the best amp I've ever used. Sorry for the lousy pic...
![]()

My OR120 doesn't qualify...
But my Sovtek MIG100H does.
100(-ish) watt valve heads get my parts moving.



Here's mine. Mid-late 1963 JTM45. Yes, it's a bass head - 'bass' is roughly scratched into the back panel (Marshall were so hi-tech in those days). There's only a couple of caps difference between the guitar, bass and PA versions. Output is just over 30W. Running KT66's. Sound... well, it gets more guitar than bass use, but it's just probably the best amp I've ever used. Sorry for the lousy pic...
![]()


