Re: Thoughts on wireless speakers for "old school" stereo receivers
Depends on what you are after..
Units like the one you posted work, some better than others, the better ones you a line out instead of a head set jack..
Bluetooth compresses the music if you are ok with the sound you will get from that, DAC'S(digital /analog converters) are not cheap for good ones so things like you posted, cheap ones will have a cheap converter.
Not knowing what or how old of a unit you are hooking to, but if it has a audio coax digital out or fiber op tos link out, I'd use that , and a Bluetooth adapter that will connect to that.. as you won't be relying on the dac in the Bluetooth unit to convert the analog head set info to a digital stream.. before compressing it to the bluwtooth format..
Even a Bluetooth unit that uses analog outputs from your stereo (rca jacks) will sound better than the cheaply amp signal from a headphone jack
FYI most older stereo's will have a tape loop (cassette) input and output, the output used to go to a deck to record, but can be used as a line level output for a Bluetooth unit.. if a digital out isn't offered on your stereo..