From
The Tube Amp Book: 4.1 Edition by Aspen Pittman:
"[Musicman amps] were some of the very first hybrid amps, using a solid state preamp to drive a tube output section...I think the very best sounding ones were the very first models with a 7025 tube driver to push the output tubes. They later changed this section to a solid state device and I think lost some of the warmth and touch the early ones had. The early ones to look for were the models 65 and 130 with the numbers written out in script (IE:one-hundred thirty) on the lower right hand corner of the cabinet"
Glueman - could the difference you noticed be attributed to this change in design?
beelzebubbles wrote: As far as replacement speakers...I'd go with the Vintage 30's or Greenbacks. You can usually pick these amps up for less than $500. Lotsa bang for the buck.
I play an HD130 through a Mesa 2x12 cabinet with vintage celestion 30s and I love it. When I drive the preamp hard, I can get a really unique kind of distortion. It's kind of blary, kind of shrieking as someone said earlier, but not in a negative way. It definitely stands out - people always complimented me on my guitar tone. When I drive it hard, I get very little fuzz or crunch (which I'm glad for). If you keep the channel and master reasonable levels though, you get a full clean sound, which is great if you have a lot of pedals, a weird guitar, or just want a clean sound.
I also agree with N.C. - my amp is really response dynamically to how I play the guitar plugged into it. I'm extremely happy with my setup, and the amp has held up well (I've been to the shop to replace guitar cables more than I have to get it serviced).