Ahhh altec Lansing what can we say ? Probably my favorite company . This 1268 I believe is from the late 1970’s 80 or so . Talk about a tank probably weighs 35-40 lbs . I’ve had it several years I ran some super tweeters on a 4 way setup with it. The left channel quit on me but I still ran it for a while on just the right side. 60 watts is a lot of treble if you know what I mean. This thing pulls 350 watts from the wall that’s about what a modern multi channel 100 watts reciever pulls now. I figure that’s why this 60 watts seems like 150 . It looks rough but the quality is super clean that’s why I thought it would work good on the tweeters . Could be something simple like a diode or transistor just not my area of expertise.