http://www.guitarworld.com/review-dynamo-amplifications-200-watt-grand-tour-series-gt6-head-and-cabinet

http://www.premierguitar.com/articles/Dynamo_Amplification_Introduces_Grand_Tour_Series_Amps

http://www.premierguitar.com/articles/Dynamo_Amplification_Introduces_the_M50X_Amp

http://www.premierguitar.com/articles/20968-dynamo-amplification-introduces-gts-c-combo

http://thetoneking.com/wp/dynamo-amps-a-cure-for-g-a-s/

http://www.vintageguitar.com/8754/dynamo-launches-grand-tour-series-amps/

http://www.vintageguitar.com/17911/dynamo-amplification-expands-grand-tour-series/