Wuzhi Audio ZK-502L Power Amplifier Board Class D AMP Module for DIY Wireless Speaker (ZK-502L)

The media could not be loaded. I gutted the broken factory AM radio in my 67 pickup and put this bluetooth amp in its place. It fit well, but took a little ingenuity to make it work with my factory radio knobs. Visually, you would have no idea it was modified. I used my existing radio power feed and speaker wiring for a simple clean install. Sound quality is great and it always connects to my phone automatically.I've read complaints about different amps with annoying startup voices that say "power up", "pairing", "bluetooth connected". This unit only makes a couple tone sounds at startup (one for power up and another for bluetooth connect). I'd list this as a must when installing in a classic truck.

This amp is tiny, and works great for my use case!I am using this in the garage with some old bookshelf speakers, its plenty loud for me and sounds just fine. If you are looking to blast out the neighbors, this little amp probably isn't for you, but a small potentially portable or non-heavy use, seems to do well.Used a old 19V 2.19A hp laptop brick for it.Package includes the board, nice little laser cut backing and top protective plates, a few screws and standoffs, and a tiny screwdriver to assemble with, as well as descent instructions.The quality of this is better then I expected for $12, took a chance and it paid off, not a bad little amp.

I use two different types of mini Bluetooth amplifiers and this is #1 as far as Bluetooth connection quality . The 2nd one I Iike the most bc it has an aux jack. This does not.

Comes with everything I needed, the Bluetooth connected straight away with no issues, range is good, driving my speakers quite well and I'm only running this on 14v from a 4s lipo battery (which at 3600mah which I ran around 60% volume for 30 mins and used literally no battery. Only thing I can't attest to is longevity.

Bought this as part of a project to turn an old, non-working AM radio into a "vintage" Bluetooth speaker. Installed per instructions with new speakers and a decent power supply and board kicked in on first power-up. Now, just turn on the power and it automatically links...can't say more good things except that for a small, inexpensive board, I was amazed at the quality and performance.

Advertised as 50W + 50W, the device actually puts out a meager 10W performance. Not a value for money. Too small to be practical.

Great little gadget, I used it to build my own Bluetooth radio box for my shop. Great price, powerful little device and very easy to set up.

The media could not be loaded. Used to power two Kicker KS 6-1/2 coaxials in a Cessna 210 diy project. Speaker wire terminals are a little flimsy but the volume knob is very solid and the Bluetooth works well once it’s set up. Sound is superb for an $11 amp, clearer than most cars if you install speakers properly. Also plays very loud if you need it. Would skip for a permanent amp, but works wonders in a diy application. (Running a 24V power supply)