whereas the slx and dual reverb had 5881-6l6 power tubes.
The early DRs and SLX came with el34s as well. The mkiii only has 3 preamp tubes but adds additional gain with diodes. Kind of like a 2204 with a built in boost. The mkiii when healthy and the master above 3 is very thick and meaty. I dont understand why they stopped producing them they are a great marshall and certainly holds it own against the others.