XY-S350H 220W*2+350W 2.1 Bluetooth Power Amplifier Board Support Custom Bluetooth Name, 18V-36V Bluetooth Speaker Audio Amplifier Module (XY-S350H)

I use this in my warehouse/man cave using three (old) deep cycle batteries to take advantage of the 36v high watt output. I didn't really notice a quality or volume improvement by upping the voltage from 12v but it works great!. I power an old JBL home theater woofer and some leftover Bose bookshelf speakers and this thing cranks! I have 20' ceilings and the sound is loud and clear as a bell! It is used every day at almost full volume with minimal distortion. Heat can be an issue because it does get hot but it hasn't faulted yet.

Combined with a reliable switching power supply (I purchased an off-brand 36v 400w (11a) unit for under $30), this 2.1 system with basic tone, sub, and volume controls produces remarkably clean sound with crisp highs, chest-moving bass, and balanced stereo as loud as I'd like. As a hobby, I've tested several dozen audio boards over the past three years and am thrilled with how far this product outpaces everything else I've found in the sub-$100 D-Class amp/board category. I had tried it's predecessor, XINYI Sini Audio 160*2 x 220W 2.1 Amp - the XY-S220H model - and was surprised at the performance provided by the dual TDA7498 chips. When I discovered the existence of the XY-S350H model, which utilizes different TPA3255 chips, I was definitely intrigued. For a mere ten bucks more I talked myself into purchasing this more powerful unit. Wow.

It worked better than expected!

I used 2 drill batteries in series to make a Bluetooth speaker that was quite large in size and power. The only problem I ran into was that the board would overheat after around 1-2 hours. Other than that, the board works perfectly

You cant keep it cool enough to sound decent for more than 45 min. then volume decreases substantially and quality goes to mud. I'm running it with 2 10 inch series wired 500 watt 4 ohm subs on the 350 sub out. It pushes them good and hard when cool but turns to mush @ about 45 min. 2 - 300 watt 6 x 9s on the full range 220.I bought an AC 4in. fan and some thermal paste for the heatsink. The fan directly on top at full speed doesn't seem to help. I Haven't tried the paste yet but I'm not too hope full on it making enough difference either.

I picked this subwoofer at a local yard sale for $10 because the seller couldn't figure out how to work on it and fix it. After buying it I studied the subwoofer for a couple of days and came up with a solution. Without having the same speaker brand the company claims it won't work with other speaker brands. So I opened up the subwoofer and I pulled the guts out of it and replaced with this amp and also purchased a 36v 15amp power supply and she fired right up. When it was all said and done I had a total of $120 into the subwoofer it retails over $750 and any unpowered speakers will work with it not just limited to 1-brands

These little guys put out!! I test my car audio stuff to see how they wound with this little guy pushed a vxf15 d2 and shook some stuff off my desk! I use it on my TV everyday it runs 4 speakers and a svr 8 inch subwoofer and just buy a power supply/adapter for it it's just easier!

No tengo queja, funciona perfecto y cumple con todo lo que promete.Tiene buen sonido.