Meet Jason D’Allison, a veteran of Micro Mart’s panel of experts. He’s here to help with any technical questions, including anything to do with tablets or smartphones, as well as PCs
Story Of The Blues
I’ve just purchased a Roberts Eco4 Bt radio. This supports Bluetooth, and I’ve now tried to pair three sets of headphones to it, without success. Have you any idea what I’m doing wrong (assuming the radio isn’t faulty)?
As far as I can tell, Will, the Eco4 Bt can receive Bluetooth audio but not transmit it. It’ll allow the user to stream music from another device, such as a phone, tablet, or MP3 player, but I don’t think the reverse is true. It looks as though it’s not possible to stream music *to* another device.
Bluetooth audio streaming uses A2DP (Advanced Audio Distribution Profile). This supports both receiving and transmitting, but most devices are designed for only one or the other. I’m not sure, but it could be that headphone pairing also requires HSP (Headset Profile), and your Roberts definitely doesn’t feature that (view the manual at https://goo.gl/L87JBa). A profile, by the way, is a sort of driver that determines what behaviour a Bluetooth device supports.
One solution is to buy a Bluetooth transmitter. This would plug into the radio’s 3.5mm headphone socket, convert the analogue signal to digital, and pump it out via Bluetooth. Your headphones would have no trouble pairing with something like that. Have a browse in the usual online shops – prices start from around a tenner.
You may want to consider a Bluetooth transceiver – a 3.5mm unit that’ll work both ways. They’re barely any more expensive. Such a device is a great way to breathe new life into an old hi-fi. Some old hi-fis are just too good to throw away, but they can be limited in today’s world by having no wireless connectivity. Shove a Bluetooth receiver into the mic or aux socket and you’re straight back in 2016, able to stream to the hi-fi from phones and tabs and so on, effectively creating a giant sound dock.
A 3.5mm Bluetooth receiver is a great way to make a non-wireless audio device useful again