A Little History...Congratulations on your choice of the HEARTBREAKER as your amplifier! Its fine all-tube heritage is apparent
in each soulful note you play, but you may not be aware that this amplifier was created as the 25th anniversary tribute to the amp that
put Mesa/Boogie on the map and changed guitar amplification forever...the Boogie.
The Mark I Boogie burst on the scene in late 1970 as the first amplifier ever to contain a high gain pre-amplifier that could be
overdriven at any output volume. By ingeniously using a cascading series of pre-amp stages, Randall Smith brought to life the (until
then) latent potential of the 12AX7 and changed the sound of electric guitar. No longer would the saxophone be the most likely
instrument to grab the solo spotlight...now guitar had a singing voice! With its liquid sustain and bold authority, the early Mark I
immediately won the hearts of the worlds’ top players and was soon an international smash hit. Overwhelmed by orders for this
compact, high performance 1x12 giant killer, Randall made plans to leave the store he had co-founded, (Prune Music,) where he had
been modifying and repairing amps (for the stars of the Bay Area’s music scene) and move the operation into a converted shack
behind his house.
In this shack in the mountains north of San Francisco, every part of these first Boogies were made by hand! The chassis was formed,
circuit boards were etched, front panels were silk screened and the first exotic hardwood and rare snakeskin cabinets were made...all
with relentless attention to detail. Mesa Engineering was now in full swing with world wide acclaim. High gain was born back then
and seemed to be here to stay, as proven when the Mark II’s introduced the world to channel switching in late ’78. The next
important development came in 1986 when Mesa pioneered the first Tri-Modal footswitchable amplifier, the Mark III. The rest of the
amplifier world soon followed suit.
Now, the Mark IV’s offer fully expanded footswitchability...and high gain, multi mode, channel switching amps are everywhere. The
many innovations (seen for the first time) included on these early Mark I’s have since become standard features on virtually all major
brand amplifiers of today. All these modern amps have a common ancestor in the original Boogie...the missing link between vintage
(one sound) and modern high gain, footswitching (multi sound) amplifiers.
The HEARTBREAKER assembles all these early innovations (along with many more recent ones) and showcases them in a 2
channel, 5 mode footswitching package that pays ultimate tribute to the soulful voice of these vintage Mark I Boogies. Enough
history for now...we thought you might find your new HEARTBREAKERS’ lineage interesting - and possibly give you a sense of
pride knowing that its bloodline figures prominently into amplifier history.
1.5 A
3 A SB
FUSE
117 V.
3 A.
60 HZ.
WARNING:
Unplug power
before replacing
fuse or removing
bolts mounting
chassis.
Replace
fuse with
same type
and rating
only.
FULL
NORMAL
TWEED
VARIAC
POWER
SOURCE
VACUUM
TUBE
SILICON
DIODES
RECTIFIER
SELECT
USE 6V6's WITH TWEED POWER
AND TUBE RECTIFIER ONLY
BIAS SETTING MUST
MATCH TUBES IN USE!
BIAS
SELECT
6L6
6v6
6L6
6v6
EL34
EL34
RETURN
SEND
REVERB
FOOT SWITCH
16 OHM
2x12 COMBO
SPEAKERS
60 WATTS
100 WATTS
SLAVE
8 OHM
4 OHM
REAR VIEW HEARTBREAKER
REVERB
PRESENCE
CH2
REVERB
PRESENCE
CH1
FRONT VIEW HEARTBREAKER
INPUT
SWITCH
ON
POWERSTANDBY
ON
LEVEL
BOLD
CURVACEOUS
ALL
TREBLE
MASTER
VOLUME
BASS
MIDDLE
HI MODE
TRIM FAT
CH 2
HI MODE
BOOST! NORMAL
TREBLE
MASTER
VOLUME
BASS
MIDDLE
HI MODE
TRIM FAT
HI & LO
BRIGHT WARM
CH 1
GAIN
LO
HI
CH 1
LOVE
*
HI
CH 2 GAIN
*
LUST
LO
PAGE 1
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