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info    updated 1/10/2008...please email corrections/info

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

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

Reviews http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Gallien-Krueger

Gallien Kruger forum http://www.gallien-krueger.com/community_board.html

Garen amps

http://vintage.catalogs.free.fr/Index.htm

Garnet

http://www.garnetamps.com/comdate.htm

http://www.lynx.net/~jc/garnetAmps.html

Register http://www.garnetamps.com/ampreg.htm

Garnett amp catalogs http://tone-lizard.com/Made_In_Canada.htm

Reviews http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Garnet

Genz Benz

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

Gibson

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

search at http://www.vintageguitar.com

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.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

Reviews http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Gibson

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

Grant

http://www.locobox.com/grant.html

Grampian

http://www.vintagehofner.co.uk/britamps/restof.html

http://www.gargantuansound.com/done/Grampianx.html

http://www.gbaudio.co.uk/data/grampian.htm

Greco

http://tix.gozaru.jp/stompbox.html

Gretsch

http://gretschpages.com/amplifiers/

Gretsch amp Catalog

1968  http://www.vintageguitars.org.uk/catalogues.php

Reviews http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Gretsch

Guyatone

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

Guytron

http://www.guitaramplifiermagazine.com/pub/2005/premier_issue/guytron-gt100.html

Reviews http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Guytron