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info
updated 31/1/2010 |
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G2D |
"G2D Started commercially selling
pedals in 1999. Our serial numbers are written on the base of
the pedal as well as on an internal label, these numbers are
kept on our database and people are welcome to email us and we
can pretty much tell them to the Year/week their pedal was made.
There is also a "History" link on our website that shows the
origins of G2D." [Source: Grant Wills, G2D Limited, email,
22/3/2008]
Reviews
http://reviews.harmony-central.com/reviews/Effects/brand/G2D |
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Gabriel Sound Garage |
Since 2004. Gabriel Bucataru,
Arlington Heights, Illinois.
Manufactured
since "2004. In my basement Chicago, USA.
Dating GSG
amps
I keep a record of all of them.
The serial number is actually the name of the original owner."
[Source: Gabriel Bucataru, email 20/2/2009]
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Gabriel+Sound+Garage
Images courtesy
Gabriel Bucataru.
 
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Galanti |
Italian amps
Fetish Guitars
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Galanti
Image ebay
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Gallien Krueger
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Gallien-Krueger was founded in 1968 in Stockton, California.
Robert Gallien sold his first amplifier to Carlos Santana. In
1969 Carlos used a GK amp at Woodstock. GK continue to build
amps in California and their cheaper line is produced in Taiwan.
[Source: Blue Book]
Gallien Krueger dating
From this site the story
appears to be" The 4 digits of the serial number before the "E"
indicate YYWW where YY is the digits of the year (01 for 2001)
and WW is the work week (01-52) in which the unit was
manufactured".
http://www.toddh.net/music/gk/
General info
Gallien-Krueger: survivor, innovator, and leading bass amp manufacturer Robert Gallien reflects on his nearly 40-year legacy.
http://en.wikipedia.org/wiki/Gallien-Krueger
Gallien
Krueger Catalog
2002 Gallien Krueger catalog
2003 Gallien Krueger catalog
2007 Gallien Krueger catalog
Gallien
Krueger schematics
http://www.freeinfosociety.com/electronics/schempage.php?cat=1
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Gallien-Krueger
Gallien Kruger forum
http://www.gallien-krueger.com/community_board.html
Image eBay:
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Garcia |
Since 2004. Matthew Garcia makes
tube amps and effects, Myrtle Beach, South Carolina. |
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Garen amps |
http://vintage.catalogs.free.fr/Index.htm |
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Garnet
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1960s-1989.
Canadian amp company founded by "Gar" Gillies and sons Russell and Garnet.
Excellent Garnet amp resource site at
http://www.garnetamps.com/
Dating
Garnet amps
http://www.garnetamps.com/dating.htm
Other Garnet
amp resources
http://www.lynx.net/~jc/garnetAmps.html
http://www.fenderbronco.com/id11.html
Register
http://www.garnetamps.com/ampreg.htm
Garnet
schematics
Garnett amp catalogs
http://tone-lizard.com/Made_In_Canada.htm
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Garnet
Images
Sonic Circus, ebay
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GBX |
see Ahed |
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GDS Amplification |
GDS Amplification LLC, started
2001 in Flint, Michigan. Now in Fenton, MI. The year of
manufacture is the first four digits of the serial number. All
amplifiers built by GDS Amps have the "GDS Amplification" logo
on the cabinet. GDS now also owns Guytron
amps" [Source: Graydon, D.
Stuckey, email, 13/1/2009]
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/GDS+Amplification
Image GDS web:
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Geib |
Geib was a cabinet maker in
Chicago pre World War II. They made cases for Gibson
guitars. According toGruhn's
Guide To Vintage Guitars, Gibson made
amps with chassis by Lyon & Healy and cabinet by Geib, and
these amps were made with Recording King brand. Kalamazoo
made amps with a Geib medallion on the side [Source:
Pre
WW II amps] so suspect the Recording King and Kalamazoo amps
came from the same line.
According to
Vintage Guitar a 1936ish
Supro/Bronson amp
was made in Chicago by Chicago Electric, with
cabinets built by Geib.
The following photos were sent to
me by Pat Maguire for help.
The
amp was purchased in Conway N. H. in 1997. The proprietor
of the pawn shop told Pat it was
pawned by some member of The Smashing Pumpkins.
There are no other identifying marks except for the Geib
medallion. The silver foil sticker
inside the back next to the Geib badge
states: "Licensed by Electrical
Research Products Inc. under U.S.
patents of American Telephone and Telegraph Company and Western
Electric Company Inc. for use only in
public address systems, phonograph
distribution systems, systems for distribution from a radio
broadcast receiving set and systems
for distribution from musical instruments."
If anyone is able to add more
please let me know.
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GEM |
GEM were an apparently Italian
maker of amps with a penchant for naming amps after planets.
Mars, Venus...Saturn head...
slightly 'space age' graphics, but were made in the '70s."
[Source: Vintage Amps Forum] But the GEM amp pictured here
from eBay is made in USA (the speaker was made in Mexico)
GEM Guitar amp
schematic
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Gem
Images GEM TR7
eBay:
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Genesis |
1980s student line by Gibson. |
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Genz Benz |
Since 1984. Amps made in Scottsdale, Arizona,
USA
Genz Benz
Pricelists
2005 Genz Benz
pricelist
2006 Genz Benz
pricelist
2008 Genz Benz
pricelist
Genz Benz
catalogs
2006 Genz Benz catalog Bass
Guitar
Acoustic
2008 Genz Benz catalog
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Genz+Benz
Image eBay:
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George Dennis |
Since 1991 George Dennis amps was
founded by George Burgerstein, starting with effects pedals and
amps were introduced in 1996. Located in Prague, Czech Republic.
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/George+Dennis
Image eBay:
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George Evans |
George Evance
Custom amplifiers are made in Australia.
Image eBay:
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Gerhart |
Since 2000. Amps and kits from
Gary Gerhart, West Hills, California.
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Gerhart+Amplification |
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Gerlitz |
? - 2007. Harvey Gerlitz made the
Revelator dual amp. It appears from a comment made by a
dealer on the
Gear Page that Harvey stopped making the Revelator in
2007. The web site is no longer operating as at Jan 2009
with the last wayback machine page Jan 2008 (the first 1999).
The following pdfs and image are from the archive:
Gerlitz Amplification Home Page
2006
Gerlitz amp why?
Gerlitz Revelator Product Features
2002
Gerlitz amp technical information
- design and construction 2002
Gerlitz amp pricelist 2002
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Gerlitz+Amplification
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Germino |
Greg Germino
worked with Mojo Musical Supply in January 2001 and late
that year was commissioned to build the Mojo "Tone Machine"
amplifier consisting of a run of 30 pieces. In
May 2002 Germino Amplification began with the first production
pieces being shipped to dealers at that time.
Greg builds tube amps and cabs in Graham, North Carolina,
USA.
Germino
amplifer dating
"All Germino
amplifiers have a date written on the chassis of when they were
built.
Very early 2002 this was written in permanent maker on the top
or side of each chassis. Additionally each back panel was
engraved with a three digit serial number.
By 2003 I was
applying a label which I hand signed and wrote serial number
corresponding to the back panel s/n. This has continued
throughout production.
In early 2007
beginning April I began using a different chassis with new
panels that use reversed silk screened lettering/numerals on
clear perspex that was painted gold after the lettering. This
gives the exact appearance
of the old original plexi panel amps.
The earlier
panels were gold acrylic that were reversed engraved and
engraved lettering painted black on the backside.
Beginning April
2007 along with the new panels a serial numbering system came in
to use with the last two digit os the year being used followed
by the serial number sequence of a given model. Ex: Club 40 S/
07 075,
indicating built 2007 and the 75th piece in the run.
2002 used a
very large Germino Badge logo for the first 10 pieces of each
model in production. This style logo was followed by a smaller
plexi block logo with "hobo" font. This was used thru 2005.
Beginning 2006 the script
logo came into use as you see currently.
I keep a build
sheet and voltage chart for every amplifier I have made. This
has voltage information as well as s/n and date of manufacture.
Early 2002
into 2003.
Post 2004


[Source and
images courtesy of Greg Germino, email 24/1/2009]
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Germino |
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Gibson
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Gibson has offered amps since the mid 190s.
Gibson amplifier
reference books
Gibson Amplifiers 1933-2008: 75 Years of the Gold Tone
Dating Gibson Amplifiers
/ serial numbers
Observes that "Gibson serial numbers stamped onto amp chassis
seems to be quite random and
therefore possibly meaningless"
http://hem.passagen.se/ekabjan/Amps/Intro.htm
but more info here:
http://www.superiormusic.com/page199.htm
Gibson Gold Tone amp dating
http://www.gibson.com/en-us/Support/SerialNumberSearch/
Product code/production
number/quarter and year made
http://hem.passagen.se/ekabjan/GibsonAmps.htm
http://www.harmonicamasterclass.com/vintage_amps.htm
Skylark
http://www.angelfire.com/blues/rockinjohn/skylark_ga_5.html
Gibson
wiring diagrams / schematics
http://www.gibson.com/en-us/Support/TechSupport/Wiring%20Diagrams/
http://www.freeinfosociety.com/electronics/schempage.php?cat=1
http://www.drtube.com/guitamp.htm
Gibson amp catalogs
http://www.gibson.com/Files/Downloads/PDFs/GoldTone/GoldtoneCatalog.pdf
1958-1970
http://www.vintageguitars.org.uk/catalogues.php
2002 Super Goldtone
Catalog
Gibson
amplifier books
Gibson Amplifiers 1933-2008: 75 Years of the Gold Tone
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Gibson
Image of Gibson amp on the right
is a 1952 Gibson Les Paul amplifier from eBay.
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Gibsonette |
The Gibsonette was made by Gibson
from '54 to '61. At first it was a tweed, then a two tone by
'60. It has one-10 inch speaker, 2-6V6s, a single 12ax7 and a
rectifier tube. It turns out about 9 watts. [Source:
Birds and Moons Forum]
Gibsonette amp schematics
http://www.schematicheaven.com/gibson.htm
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/product/Gibson/Gibsonette/10/1
Image 1950s Gibsonette eBay:
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Ginelle |
Since 1996, by Rick Emery, West
Berlin, New Jersey. |
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Godlyke |
US effects distributor founded by
Kevin Bolembach starting with Guyatone in 1998 and others
including Bixonic. [Source:
Music Gear
Resource] |
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Goldentone
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Goldentone amplifiers were made in
Melbourne, Australia by Rose, Morris. The best resource for
Goldentone amplifiers is
Ozvalveamps.
Goldentone schematics
Images below and left 1967
Goldentone model 1742 40-watt "Lead" Reverbmaster amplifier
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Gomez Amplification |
"Gomez Amps began in
2005.
Rancho Santa Margarita ,
California (southern California )
I place a hand-written ink
serial number on the chassis and the tube chart on each and
every amp.
No date code, however it is
recorded in the test data per amp. The customer can always
request that but I have yet to have anyone do so."
[Source: Dario Gomez, email 16/1/2009]
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Gomez |
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Goodmans |
Goodmans speakers were used in
Orange Matamp in late 60 early 70s. They were made
in Wembley, England You can see from the labels below that a
date label is placed on the magnet.
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Goodsell |
"All of
the amps are/were made in Atlanta, Georgia. The first numbered
Super 17s were made in my Hammond organ shop in the Summer of
2004. Serial #0001 belongs to producer Brendan O'Brien and has
been featured on numerous recordings made at Southeren Tracks
Studios in Atlanta. Serial #0002 is in Australia with Randall
Waller, who was over here playing
guitar with Shania Twain at the time. The first 100 had a large
aluminum serial plate on the back with model information. The
earliest of these were identified as "Clairmont Super 17" on the
plate, manufactured by Numerous Complaints Music, LLC. These
were replaced by a similar-looking plastic plate, though it was
now identified as Goodsell Electric Instrument Co. with blank
white squares for the model name and serial # to be filled in
with a Sharpie as each one was made, so there were 17s, 22s,
33s, and 44s made with that plate until roughly s/n 0200, when
they were replaced by a non-model specific pre-numbered vinyl
sticker, with the now-familiar "Goodsell" script logo in maroon
on a white background with black text. The vast majority of
these were Super 17 Mk2s and 33 Customs. This was the scheme
until s/n 0500, used up until mid- 2008."
[Source: Richard Goodsell, email 16/1/2009]
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Goodsell |
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Gorilla |
Since 1980s. Solidstate entry
level amps distributed by Pignose, Las Vegas, Nevada, USA
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Gorilla
Image eBay:
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GoudieFX |
"I've been manufacturing since
2005 and I sign/date the inside of all the pedal." [Source:
Russell, Goudie FX, email 19/3/2008]
http://en.wikipedia.org/wiki/GoudieFX
review
http://reviews.harmony-central.com/reviews/Effects/brand/Goudie+FX |
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Goya |
Mainly a guitar firm but some amps
and effects
from the 1960s.
The best Goya
resource with some information on Goya amps.
Goya Boom Box
Bass Booster schematic
Images Goya
attache amp eBay:
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Grant |
http://www.locobox.com/grant.html |
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Grampian |
http://www.vintagehofner.co.uk/britamps/restof.html
http://www.gargantuansound.com/done/Grampianx.html
http://www.gbaudio.co.uk/data/grampian.htm |
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Greco |
http://tix.gozaru.jp/stompbox.html
Image Yahoo
auction:
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Greedtone |
All Greedtone gear is
built by hand in
Seattle, WA, USA |
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Green |
Green amps have been made since 1993. Line by Matamp,
England.
Matamp history
Review
http://reviews.harmony-central.com/reviews/Guitar+Amp/product/Matamp/Green+GT-120/10/1
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Greene Pedals |
Since March 28, 2000. Schematics
for this range of pedals are available at the web site.
Greene Axis Fuzz schematic
Reviews
http://reviews.harmony-central.com/reviews/Effects/brand/Greene
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Greer Amplification |
Since 1999. Tube amps
and effects by Nick
Greer, Athens, Georgia, USA.
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Greer+Amplification
Image eBay:
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Gregory |
1950s-1960s. Private brand made by
Harmony. [Source: Vintage Guitar Price Guide]
http://www.diyguitarist.com/GuitarAmps/MarkX.htm
Gregory
Mark X schematic
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Gregory |
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Gretsch
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http://gretschpages.com/amplifiers/
Gretsch amp Catalogs
1968
http://www.vintageguitars.org.uk/catalogues.php
2008
Gretsch catalog
2008
Gretsch Price List
Gretsch
schematics
http://www.freeinfosociety.com/electronics/schempage.php?cat=1
Gretsch
schematics
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Gretsch
Image Chicago
Music Exchange:
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Groove Tubes |
Since 1986 have made amps, San
Fernando.
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Groove+Tubes |
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Guild
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Guild was founded in 1952 and
offered amps in 1960s to 1980s. Guild effects
made by Color Sound.
http://www.ggjaguar.com/guild.htm
Guild
schematics
http://www.schematicheaven.com/bargainbin.htm
http://analogguru.an.ohost.de/
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Guild
Images eBay:
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Gunn
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Gunn amplifiers were made sometime
in the 70's ? to early 1980s in Auckland, New Zealand by Gunn
Electronics. They made
heads, cabinets and combos.
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Gunn
Image eBay:

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Guyatone
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Since 1933 offering amps from late
1940s.
Amp
http://www.vguitar.org/features/gear/details.asp?AID=3006
http://tix.gozaru.jp/amp.html
1979 Guyatone Catalog
http://brochures.yokochou.com/guitar-and-amp/guyatone/1979/index.html
Effects
http://www.locobox.com/guyatone_box.html
http://www.vguitar.org/features/gear/details.asp?AID=3006
http://tix.gozaru.jp/stompbox.html
Guyatone Catalogs
1979 http://brochures.yokochou.com/guitar-and-amp/guyatone/1979/index.html
1977 + ?
http://ushigomepan.cool.ne.jp/darkend/catalogue.html
http://ushigomepan.cool.ne.jp/effect/catalogue.html
Effects Review
http://reviews.harmony-central.com/reviews/Effects/brand/Guyatone
Guyatone Zip
ampifier image pics Yahoo auction:
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Guytron |
Guytron Guitar Amplifiers, started
in 1995 by Guy Hedrick Columbiaville, Michigan, USA. Now owned
by GDS Amplification LLC, based in Fenton, MI. Serial numbers
are simply sequential with no indication of year of
manufacture.
http://www.guitaramplifiermagazine.com/pub/2005/premier_issue/guytron-gt100.html
Reviews
http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Guytron
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