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.

Estoy a gusto con mi compra. Dispositivo pequeño pero puede sorprender. Lello muy rápido, bien protegido y fácil de armar. Pensé que venia con la fuente pero para mi no es nada malo porque tengo a mano y le puse una de dos amperes a 12 voltios y va bien para mi.

Easy project to put together and sounds great

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

Over all this is ok, the Bluetooth chip isn’t great and these don’t appear to be legit TexasInstrument chips. The main issue is gain balancing between your L/R and subs. With a 24v and 36v power supply and a 300W 4ohm subwoofer and the volume for the sub maxed out, it’s barely on compared to the two 30w 8ohm bookshelf speakers, the sound quality is decent, but not where it should be given the specs. Their app is sort of garbage and wants a lot of unnecessary access, the EQ settings are TERRIBLE, and you cannot be connect to make changes while something is connected via Bluetooth for streaming.Switching everything over to a Fosi mini amplifier with a 50w per channel L/R and a 100w subwoofer output and using the same power supplies, the bass volume nearly tripled in output far over powering this unit which is supposedly sending 3x the output to the subwoofer.Don’t waste your money, buy something else.

It worked better than expected!