Here is a post and comment by the Doc on MAZ 38 versions. Note that this is a Apr 16, 2012 quote. Other updates can be viewed on Dr. Z Amps Mods & Services page. drzamps.com/support/mods-and-services/
Version 1: 1990 to appox 1999 Original MAZ's were named ( i.e. Invasion, Studio Deluxe, Studio Lead , and so on ) they had Vertical input jacks, negative feedback, and a Presence control, a bit on the cleaner side.
Version 2 : 2000 to 2010 Horizontal input jacks, hotter PI with no NFB, a CUT control, and now all called MAZ Seniors. A bit dirtier.
Version 3 : 2011 to Present UL/ETL certified, back to Vert. input jacks, EQ boost and Effects Loop standard, detachable IEC power cords, many tweaks to the tone of the amp, and new Reverb tubs.
"Z" Steve: Great amps Frank those Hi Walts!
Jan 30, 2020 8:57:35 GMT -7
BritInvasion: That's a good one Steve!
Feb 1, 2020 9:01:39 GMT -7
runninwiththerevil (Matthew): Puking kid. Oh boy. Glad I was done jamming. Another three minutes and there would have been projectile on the Maz JR!
Feb 1, 2020 20:16:01 GMT -7
roscoenyc: weedala weedala weedala
Feb 4, 2020 6:45:42 GMT -7
roscoenyc: Whenever I see the phrase "clean pedal platform" I'm filled with sadness about the real tube amp joy that could have been.
Feb 8, 2020 8:42:49 GMT -7
The Half Strudel: But my distortion pedal just doesn't sound good without a lot of headroom...
Feb 10, 2020 10:47:02 GMT -7
The Half Strudel: And if you are a consenting adult we want you to call today in Los Angeles, the number is Richmond9-6935, in Downey it's 347-8932. Call it direct, Call it collect, But call it today
Feb 14, 2020 22:03:58 GMT -7
walt: I almost bought a 50 watt HiWalt head back in 88-went to the bank machine and someone swooped in and got it first,it sounded great...
Feb 17, 2020 18:46:58 GMT -7
roscoenyc: I tried. Oh well.
Feb 27, 2020 7:07:44 GMT -7
T-R☼CK ♫: Come back when you get some 'spurence, son.
Feb 27, 2020 8:25:56 GMT -7
roscoenyc: Hey, I'm internetin' my a** off over here.
Feb 27, 2020 8:47:13 GMT -7