Keywords: Matchless hc-30.jpg en wikipedia 2012 April 12 Guitar amplifier An all tube Matchless HC-30 amplifier head driven by 4 EL84 power tubes totaling an output of 30 watts This is an original photograph taken by Paal Birger Solhaug on August 24 2005 Transferred from http //en wikipedia org en wikipedia; transferred to Commons by User Premeditated Chaos using http //tools wikimedia de/~magnus/commonshelper php CommonsHelper 2005-08-24 Original uploader was Lappado at http //en wikipedia org en wikipedia Released into the public domain by the author en wikipedia Lappado Original upload log en wikipedia Matchless_hc-30 jpg 2005-08-24 15 01 Lappado 227×101× 5698 bytes <nowiki>Guitar amplifier An all tube Matchless HC-30 amplifier head driven by 4 EL84 power tubes totaling an output of 30 watts This is an original photograph taken by Paal Birger Solhaug on august 24 2005 </nowiki> Guitar amps Consumer electronics Audio amplifiers |