Talk with Mike at Mesa. The most important upgrade is to replace the 10,00uf 16V brown Sprague electrolytics on the audio board. Highly prone to leakage.
Had my amp set up for EL34s many years ago, much smoother than the 5881. Also replaced the .1uf caps on the outputs to Hovland Musicaps and will soon go to Mundorf silver and oil caps. The original Mesa tubes tended to be a little bright in combination with the orangedrops.
Had my amp set up for EL34s many years ago, much smoother than the 5881. Also replaced the .1uf caps on the outputs to Hovland Musicaps and will soon go to Mundorf silver and oil caps. The original Mesa tubes tended to be a little bright in combination with the orangedrops.