Bluetooth Receiver with Long-Range, Multi-Unit Sync, and Signal Quality Indicator

[Joseph XDD]

I have a vintage amp and passive speakers that I absolutely love. But without Bluetooth, they‘ve been sitting mostly unused for a while now. Lately, I’ve been streaming from my phone to a Bluetooth speaker, but that just died on me, so I‘m thinking it’s time to finally bring the old system back into action.

I‘ve looked into Bluetooth receivers on the market, but honestly, I’m not impressed. Range is inconsistent – it drops as soon as I walk into the next room. Pairing logic feels clunky. And most of them are just plastic boxes that look cheap sitting next to a nice amp and speakers. It feels like the category has been stuck in “good enough” mode for years.

So I‘ve been brainstorming a concept that actually solves a few things:

• Solid long-range connection – reliable even through walls, so I can walk around the house without dropouts.
• Hi-Fi sound quality – low noise, clean signal, no audible compromise.
• Signal strength feedback – so you actually know if you’re in a good spot, or if there‘s interference messing with the connection.
• Multi-unit sync – the ability to buy 2 or 3 of these and have them play in sync. For example, one in the living room and one in the kitchen, both playing the same music, or even split left/right channels for a multi-room stereo setup.

On top of that, I’d want it to look and feel like part of the system – metal build, not plastic. And I‘m really drawn to the idea of adding a subtle ambient light that pulses with the music. I drive a Tesla Model 3 and I love how the interior lighting responds to the music – simple, elegant, single-color rhythm, nothing flashy. I think that kind of emotional connection to a device would make streaming feel less like a compromise and more like an experience.

I’d love to hear your honest thoughts:

1. Would you add a Bluetooth receiver to an older system, or have you moved on to other solutions (Wi-Fi streamer, new amp, etc.)?
2. What's your single biggest frustration with Bluetooth receivers you've tried – sound quality, connection stability, or operation/pairing?
3. How much does physical design matter to you? Would a well-built metal chassis with ambient lighting actually add value, or is that just a gimmick?
4. Would signal strength feedback (so you know if you're in a good spot) and multi-unit sync (2-3 units playing together in different rooms) be useful to you, or is that over-engineering?

To give a clearer sense of the direction I'm thinking, I threw together a rough visual mockup — mainly to explore the idea of a metal body and a subtle, single-color ambient light ring. Still early stage, and just one possible form factor. Curious if this kind of design language resonates with others.

Appreciate any feedback – this is purely a personal curiosity/research. Just trying to figure out if this is something other people actually want too.

 

[Osvaldo de Garay]

If the old amp has been inactive for many years (>5), please think in make a electrolytic reform. 'Lytics job like a small battery, with liquid chemicals inside. There is extensive data in web. But DO NOT PLUG IT AT MAINS DIRECLY. After some time inactive they leak acid by the seals corroding surrunding components, and eventually making conducting paths between electronic parts (semiconductor, resistances, capacitor, IC's and all this foolery). Take a look, a deep look inside the rig to see evidence of chemical damage. Once checked, catch a 100W incandecent bulb (NO LED NOR FLUORESCENT), a pure tungsten one. Remove the main fuse, and wire the lamp with its socket with two short pieces of cable, 20 or 30cm are sufficient, and with extreme care, wire it in the fuse holder. Just plug it at mains, and switch it on without the speakers and zero volume. On the base that it is solid state, you will see a large flash on the bulb with a quick dimm to almost dark. Pay attention to internal sound. If you see smoke, sparks or cracking sounds, switch it off and search for help to repair. If all goes ok, then let the rig to warm a couple of hours untill caps will reform itself, allways with the bulb wired into the unit. If during this two hours none strange occurs, use it normally undoing all I suggested, let the fuse in its place and enjoy.

Buy if one or more of the caps generate large leaks, it is preferable to spent a little of time in place of a pair of new speakers or your own life.

 

[MCH]

I think what you need is a multi room wifi system. There are many commercial or diy low cost alternatives. Check lyrion or sendspin. Diy means they come with a learning curve though.

 

[john61ct]

A BT Receiver is just a format converter function like TOSlink to Coax S/PDIF, usually a little gadget hidden with other cabling or PSUs, never a full "designey"component on display.

Look for good reputation in functionality, and low price, never mind build quality.

Key is codec support, obviously both sender and receiver must match.

LDAC and aptX HD / Adaptive are the best these days, with strong signal pretty much as good as wired.

aptX LL for gaming and video lipsync.

BT itself is not designed for long range, what you describe is inherent in the technology.

There are WiFi Tx/Rx technologies, Chromecast, AirPlay etc worth checking out.

But "streaming from my phone" pretty much limits you to BT.

A better way to go is streaming over the network, ideally wired Ethernet.

A Wiim Ultra directly attached to your amp + speakers supports all the internet streaming services

For local files FLAC or MP3 or whatever, it will play from a directly attached USB drive, in future set up a NAS with proper backups...

and the Wiim can be remote-controlled from your phone, with a UPnP/DLNA app to stream the music wherever.

Or Lyrion Music Server for a better library manager, Wiim and your phone can both stream from that via Slimproto / Squeezelite.

And you can add more Wiim units to get multi-room.

On top of that, I’d want it to look and feel like part of the system – metal build, not plastic. And I‘m really drawn to the idea of adding a subtle ambient light that pulses with the music. I drive a Tesla Model 3 and I love how the interior lighting responds to the music – simple, elegant, single-color rhythm, nothing flashy. I think that kind of emotional connection to a device would make streaming feel less like a compromise and more like an experience.

The lighting thing is unrelated to signal transmission, IMO just silly bling.

As to aesthetics, in general I personally focus more on SQ, functionality and value for money.

If you don't like the look of the Wiim unit, stick it in a cabinet, shelf behind smoked glass whatever.

Or look at Eversolo, but lots more expensive

 

[kemmler3D]

Welcome to ASR!

Feedback from someone who used to sell Bluetooth speakers for a living - if you are thinking about making this a product - don't unless you can afford to sit on $100k+ of Bluetooth receivers and maybe sell them below cost in a year or two.

The entire WiiM lineup already does what you're proposing except for the light show, and more.

Fancy streamers and DACs also usually support BT input.

The gap in the market you're seeing has the same cause as the gap in the DAP market, where satisfying, well designed, mid-price products disappeared due to convergence. After smartphones came out there was not much call for devices that take up space in your pocket but only play music.

Likewise, everything that should have Bluetooth input in 2026 pretty much does. Stand alone BT receivers have been obviated by source components (or even speakers themselves) incorporating the feature.

From that point of view you're basically proposing to make a nicely designed and manufactured DAC or steamer that is missing most of the features of a DAC or streamer.

As for the connectivity issues, IIRC the Bluetooth spec defines transmission power, and so the phone is really a limiting factor as the transmission power is literally limited and not meant to go past 10m. It's not a question of better quality receivers per se.

Class 1 transmitters exist that go farther, but phones don't do that. The solution if there is one, is to put a bigger antenna on the receiver. Some Topping DACs come with one, worth a look.

 

[john61ct]

everything that should have Bluetooth input in 2026 pretty much does. Stand alone BT receivers have been obviated by source components (or even speakers themselves) incorporating the feature.

The OP premise was simply adding BT input to old-school amp+passive speakers.

Dedicated BT receiver (transmitter) gear exists to do just that, and although a small niche, does so perfectly well

within BT's distance limitations, of which maybe the OP was not aware.

I'm puzzled why you'd think someone like that could be deluded enough to design a commercial product?

To solve THAT problem, it's simple - just don't rely on BT, and ideally don't bother streaming from a phone, just use it as a remote, a "control point" of a direct connected streamer component.

A "proper network music system" beyond just one Wiim Ultra, is not even needed until multi-room usage is desired.

 

[kemmler3D]

I'm puzzled why you'd think someone like that could be deluded enough to design a commercial product?

He doesn't come out and say it but the tone and language of the post suggests product design exploration, (especially as a first post with a product rendering attached), not just a personal DIY project, emphasis mine:

Just trying to figure out if this is something other people actually want too.

the category

I‘ve been brainstorming a concept

Would you add a Bluetooth receiver to an older system

Curious if this kind of design language resonates with others.

I think it's a perfectly good DIY project and a very bad commercial proposition, which is why I am trying to warn OP away from the latter. Nobody says "design language [that] resonates" unless they have a market in mind.

 

[john61ct]

Good points. I agree if that was the intention, VERY bad idea