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info    updated 15/2/2010

Earth Sound Research

Earth Sound was a brand of ISC Audio, made bass and guitar amplifiers, PA mixers/power amps, and stand alone reverb units (solidstate)  in the 1970s in Farmingdale, New York. [Source: wikipedia]

Unofficial Earth Sound Research Forum

Vintaxe Earth Amp Catalogs

Earth schematics

Reviews http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Earth+Sound+Research

Image The Jet Medic:

Eastern

Eastern schematic

Echo brand amps were made by Valco for Montgomery Ward according to the eBay add the image of the label came from.

Echo amp catalog

http://guitar.webinjp.com/70guitar_catalog/elk1.htm

Image Yahoo auction:

Echofonic

search at http://www.vintageguitar.com

Echolette

Echolette was a brand owned by Hans Bauer intended for selling stuff made by Klemt. Untill 1959 Klemt was mainly focused on radio stuff. They jumped into the instrument amplification by that year. [Source: European Guitars Forum]

http://www.el-me-se.de/echolette.htm

Echolette catalogs http://www.pmillett.com/vintage_data.htm

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

Echoplex

http://www.acmerecords.com/pkequipment.php

search at http://www.vintageguitar.com

Echoplex manual http://www.britishaudioservice.com/manuals.shtml

Eden analog

Reviews http://reviews.harmony-central.com/reviews/Effects/brand/Eden+Analog

Eden Electronics

Eden Electronics was founded in 1976 as a custom builder for professional artists and manufacturers.  Eden specialises in bass amplification.

"For US Made Eden amplifiers, the first four digits of your serial number represent the year and month (in that order) of manufacture. For example, an amplifier with the serial number 0408A1234 was built in August, 2004. For pre-USM amps, they are simply coded with the date" from http://www.eden-electronics.com/info/faq/index.asp

http://en.wikipedia.org/wiki/Eden_Electronics

Eden used prices

Eden catalogs 1997 to now http://www.eden-electronics.com/info/catalog/index.asp

Eden amp forum http://www.eden-electronics.com/forum/default.asp

Image eBay:

Edward Amplification

Stoney Creek, Ontario, Canada

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

Edwards

Image Yahoo auction:

Egnater

Since 1980, Bruce Egnater, Michigan

Egnater amplifier schematics

http://www.schematicheaven.com/post70s.htm

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

Image aBay

Eko

1959-1985, 2000 to present. Amps added 1967.

Amps

http://www.fetishguitars.com/mrt/index.html

http://www.geocities.com/stompbox2001/eko.htm#viscount

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

Effects

http://www.jacquesstompboxes.com/page5.html

Effects eviews http://reviews.harmony-central.com/reviews/Effects/brand/Eko

Ekosonic

Made in Recanati, Italy. Also made electric organs.

Ekosonic schematic

Eleca

Wuhan Eleca Electronics Co Ltd was established in December 1995, a Sino-US joint venture. Instruments made in China.

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

Image Eleca:

Electar

Sice 1996. Gibson owned brand. Epiphone made a line with this model name (Epiphone still on amp - see Epiphone) in 1930s.

Electar schematics

http://www.freeinfosociety.com/electronics/schempage.php?cat=1

Electar amp schematics

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

Image eBay:

Electra

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

Reviews http://reviews.harmony-central.com/reviews/Effects/brand/Electra

Images Electra Flangers eBay:

Electravox

Australian made amps from 1950s and 60s.

http://ozvalveamps.elands.com/electravox.htm

Image eBay:

Electric

Focused on 120 + watt Amps and Large Speaker Cabs for pro musicians.  USA

Image courtesy of Tom - Harmony Central Forum

Electro

Info from ebay: - Up until 1965 Radio & Television Equipment Co and Electro String were distributors and manufacturers of a range of musical items including Rickenbacker. Similar to Fender and Gibson at the time they had dealerships in various areas which precluded them selling their wares to other stores in the area. Now to get around it they rebadged the equipment under another name. Fender - > White, Gibson - > Epiphone and Rickenbacker - > Electro. Unlike now, these items were built on exactly the same production lines as the main name items to the same standards.

Now in the case of the Electro M-8E it gets even better, because there was a change between the Rickenbacker M-8 and the Electro M-8E, they swapped the 6AV6 pre-amp in the Rickenbacker for a 12AX7 in the Epiphone. Did I hear someone say Fender Tweed Champ – yep exactly the same valve and speaker configuration. True point to point wiring, check out the chassis shot. This is what vintage valve amp hounds rave about. The circuit uses a 5Y3 rectifier, 12AX7 (7025) pre-amp and a 6V6 power valve.

Images eBay:

Electroharmonix

http://en.wikipedia.org/wiki/Electro-Harmonix

search at http://www.vintageguitar.com

http://www.big-muff.net/

Big Muff http://en.wikipedia.org/wiki/Big_Muff

Small Stone http://www.pedalarea.com/small_stone.htm

Electroharmonix Schematics

http://www.freeinfosociety.com/electronics/schempage.php?cat=1

Reviews http://reviews.harmony-central.com/reviews/Effects/brand/Electro-Harmonix

Image eBay:

Electromuse

Electromuse was an American maker of musical instruments that operated in the 1940s and 1950s. [Source: Wikipedia ] Amps may have been made by Valco. [Source: Wiki Answers ]

Electromuse Schematics

Electroplex

Electroplex amps were made by Don Morris, Brea, California, USA

Electroplex flyer Rocket 90 1995

Electroplex schematics

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

Image Electroplex Rocket 50 combo Digimart:

Electrosonic

"We do not have a formal serial numbering system. All of our stuff is hand built, so they all differ slightly. production dates can be found hand written inside the cabs of all of the amps and cabs, next to the builder's signature."

[Source: Josh, Electrosonic email 7/2/2007]

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

Electrovoice

http://en.wikipedia.org/wiki/Electro-Voice

http://www.prosoundweb.com/install/commentary/kc/ev/timecapsule.shtm

Elektor

Elektor schematics

http://www.freeinfosociety.com/electronics/schempage.php?cat=1

Elgen

Elgen amplifiers - ? made in UK

Elgen amplifier schematics

http://www.schematicheaven.com/post70s.htm

Elgen amp reviews http://reviews.harmony-central.com/reviews/Guitar+Amp/brand/Elgen

Japanese made by Elk Gakki Co late 1960s

http://www.drtube.com/guitamp.htm#Elk

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

Elk schematics

http://www.drtube.com/guitamp.htm

http://www.schematicheaven.com/post70s.htm

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

Elpico

Elpico amps were made from the early 1950s by Lee Products of Elpico House, London [Source: Vintage Hofner ]

http://www.vintagehofner.co.uk/

EMC

EMC - Electronic Music Corp, Cleveland, Ohio, USA1960s/70s

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

Image EMC Rockin Roller amp, Sonic Circus. Thumb of EMC S300 eBay (click to enlarge)

Emery Sound

Since 1997. Curt Emery, El Cerrito, California.

http://www.vintageguitar.com/features/gear/details.asp?AID=3163

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

Image Emery Sound

Eminar

Eminar amps were made in Melbourne, Australia in the 1970s. [Source: Oz Valve amps]

Dating Eminar amps

Based on the photos below it would appear that Eminar amps can be dated from the serial number (first 2 numbers are the year of production) and if you open it up the date of manufacture will be written in oil pen on the chassis.

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

Images Eminar valve amps eBay:

Eminence

http://www.guitaramplifiermagazine.com/pub/2005/premier_issue/eminence.html

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

Empress Effects

Handmade effects from Ottowa, Ontario, Canada

Reviews http://reviews.harmony-central.com/reviews/Effects/brand/Empress+Effects

Emrad

Emrad were originally located in Littleton, the next town South from Englewood, Colorado and their principal product was a very nice and compact 100 watt guitar amp, at least as compact as it could be with a JBL D130 inside.
: The original of this amp was built for jazz guitarist Johnny Smith, who wanted a "flat response" amp instead of the built in "smiley face" sound that he heard in Fender and Gibson amps of the time.

: Emrad was pretty much a one man company run by R.E. "Ev" Evans, who built a complete custom backline for the band Sugarloaf ("Green Eyed Lady"), and a lot of custom gear for the Dirt Band in the early 70s.

: He later moved the shop to an abandoned bowling alley location in Englewood, and continued to do electronics repairs until he retired. [Source: Lee Brenkman ]

http://vintageguitarz.blogspot.com/2007/11/1966-johnny-smith-gibson-and-emard-amp.html

Engl

http://en.wikipedia.org/wiki/Engl

Engl schematics

http://www.freeinfosociety.com/electronics/schempage.php?cat=1

Engl Schematics

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

Engl forum http://lordriffenstein.netfirms.com/phpbb/nfphpbb/index.php

Images eBay:

Epiphone

1966 Epiphone amp catalog http://www.vintageguitars.org.uk/resources.php

Epiphone schematics

http://www.freeinfosociety.com/electronics/schempage.php?cat=1

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

Image Chicago Music Exchange:

Estey

1960s. Magnatone Electronics and Estey Organ Company - later Estey Electronics, Torrance California USA.

http://www.vibroworld.com/magnatone/archive.html

Estey made amplifiers for EKO - catalog

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

Image Magnatone by Estey Electronics eBay:

Eston

Eston amps were made in Australia by the Lamberti Brothers, who also made Rex amps.  General Music was Lamberti Bros' manufacturing division. [Source: Grouse Guitars] 1960s

Image Eston Super 20 Gumtree.

Etone

Australian made speakers.

In 1960, an RCA engineer named Victor Kay (Snr) moved to Sydney from Brazil and went to work for AWA.

Import duties on imported speakers at that time was around 45%, so Victor made his own 12-inch and 15-inch speakers in 1963 under the name of ‘Lafayette’.

Victor formed the ETONE company in the late sixties to manufacture speakers. They still do to this very day. [Source: Awesome article by Colin Baldwin]

Europa

http://www.geocities.com/stompbox2001/french.htm

Evans

This Evans Super Echo was found on eBay Feb 2010.  The seller thought it was Australian however from one example I have found some if not all were made in Japan.  However from a US forum there are suggestions that it loos like a Multivox MX-312 0r 201.
Same knobs, printing (echo tone, etc.) and chassis.

Another example from the ? late 1970s

More

Images eBay:

Excelsior

Made by Sano of New Jersey Our Mission Impossible

see Sano

Image eBay: