An 7161, tube an7161; röhre an 7161 id51904, ic Amplifier using not bass frequency enough sound clear bad good but high An7161 audio ic parameters, equivalents, app notes and cross reference
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AN 7161, Tube AN7161; Röhre AN 7161 ID51904, IC - Integrated
AN7161N power audio amplifier schematic
AN7161 Audio IC parameters, equivalents, app notes and cross reference