The list of early stereos that didn't have a phone jack would be shorter.
Jack
True, but I was thinking of tube preamps. There were those headphone boxes you could buy back then and connect to the speaker terminals with resistors inside to drop the voltage. Most I saw had two 1/4" jacks.I'm just considering integrated and recievers that I own. I wouldn't expect it on a stand-alone power amp but the Sherwood S-7000, S-5500II, Stromberg ASR-433 and the Fisher TA-600 all do not have headphone jacks.
history-of-headphones
when-were-headphones-invented
Although the original question isn't answered specifically in these articles, they're still fun to read.
I have a pair of the Aftershock Bluetooth bone conducting phones I saw in that link. I like them.history-of-headphones
when-were-headphones-invented
Although the original question isn't answered specifically in these articles, they're still fun to read.
That's one of the nicer ones. Many were just a box with jacks, and maybe a switch.
True, but I was thinking of tube preamps. There were those headphone boxes you could buy back then and connect to the speaker terminals with resistors inside to drop the voltage. Most I saw had two 1/4" jacks.