MATAMP GT 120 BASS UNIT.
Very few of these GT120's were built with the actual "bass eq"
and featuring the bass clef
on the front panel. This particular unit arrived to MATUSA
in sad shape.
It was stripped of all it's Matamp Armour, and had no identity. The
amp unit is pre 2001 on a
nikel type chassis and has a PC board mounted EQ that was found only
on the GT amps that
Dave Green built specifically for "Bass Guitar". Few of these
were made from 1998-2000 and
were used to fill orders for MATAMP USA. Knowing this by looking
inside, the next quest in
this situation was locating the parts. After 6 months
of ordering parts, getting some of the right
ones, and re-ordering, the amp is back on the bench. The front panel
was from old stock in the UK
and we wound up with one that had the bass clef, however states 200.
When the amp showed up, it
did not have a front panel. In it's place was a home hacked panel
that was mounted with glue, and one heavy duty chunk of angle iron and
more glue. The chrome
handles were mounted on a chunk of wood/press board and used to cover the
under side of the
chassis. So the handles were actually on the bottom.
Finding the roll bar set up that usually goes
with the handles is impossible. A new metal front panel was
cut, then the handles were mounted
with flat washers to keep the panel from being under too much pressure
by the handle surface.
It turned out alot cleaner
than we thought and is very secure with a rigid metal front panel.
Under the hood, you can see
this is PC-O-RAMA UK Style. Duel boards stacked, which are no fun
and if you
look to the top left, you will see the PC board that the pots are mounted
on for the BASS EQ. The cool thing
about this unit, is the #1 and #8 valve pins on the valve bases are pre
wired and each valve bass has it's own
bias clam. Fast and simple to repair desing with the exception of
the factory use of a rivit gun were nuts and bolts
could be used.
A very cool chassis indeed. Heavy duty with no flex, this style of
MATAMP chassis was a replica
to what Mat
Mathias had originally started in 1970 with his GT80's and GT120's.
4 EL34's and
transformers. The amp has a funny attack, but has incredible
tone. The last 1/2 inch
of the volume
knob brings in a HUGE volume boost. Dark and full of buzz, this is
a killer amp for
with big pick ups in their axe. Ric's, Gibson Rippers, and other
high output bass rigs
Gibson Guitars with humbuckers sound kill through this too. The cool
thing about this
unit is how
silent it is when on, until you strike your strings.
New these units had a sticker across
the back of the chassis. It was stripped off.
Cleaned up and marked with permanent marker, the unit looks very clean.
in an aftermarket black basketweave amp sleeve, this unit is ready for
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