Many of the better quality recordings were made with DAT recorders but a lot of the quality comes from the location of the recorder - if you are lucky enough to be in a quiet area then there will naturally be less crowd noise picked up.

Plus Japanese audiences are culturally more quiet and respectful anyway.



Personally my first ever bootleg was recorded with something like this...http://www.ebay.co.uk/itm/AUNA-VINTA...-/311806810934

Seems ridiculous now......