I picked a pair of Monoblocs at an auction and haven’t been able to find any information on them. They say Antique Sound USA on them. They’re marked as Model 108. Has 4 KT90’s as outputs. Any help that can be provided would be greatly appreciated.
ASL was a very active brand from about 1995 to 2015. Divergent Technologies in Canada was the importer. I do not think you'll find schematics online - these are usually not shared. Try to contact Tosh at Divertech - he is the Copland importer for North America.
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