Straight solid state rectified Lead 55 chassis. Absolutely the finest Marshall JMP "Plexi" re-issue on the market today. It's all here, Hendrix, Van Halen, ZZ Top, Allman Bros., Eric Johnson, etc. The split cathode late 60's front end coupled with a solid state rectified EL34 power section has plenty of vintage gain on tap and mucho headroom, reminiscent of the DR504 HIWATT tops. It just begs to be opened up!