It comes in pieces so you'll have to assemble it. There's no instruction but take a look at some photos and you will figure it out pretty easily. I use it with my 3ohm speakers and at 9V it distorts a bit. I ended up using 5V and everything is alright. I can still hear a bit of hissing but seems like there's nothing to worry about.

It comes in pieces so you'll have to assemble it. There's no instruction but take a look at some photos and you will figure it out pretty easily. I use it with my 3ohm speakers and at 9V it distorts a bit. I ended up using 5V and everything is alright. I can still hear a bit of hissing but seems like there's nothing to worry about.

It comes in pieces so you'll have to assemble it. There's no instruction but take a look at some photos and you will figure it out pretty easily. I use it with my 3ohm speakers and at 9V it distorts a bit. I ended up using 5V and everything is alright. I can still hear a bit of hissing but seems like there's nothing to worry about.

Great little amp. Virtually noiseless

Great little amp. Virtually noiseless

Great little amp. Virtually noiseless

Product arrived fast and in perfect condition.

Produto chegou rápido e em perfeito estado.

Product arrived fast and in perfect condition.

I wasn't aware that the product requires assembly when it arrives. However, that said, it is a simple process to assemble it, and it's well worth the effort as this amplifier delivers high quality audio. I would reommend this product.

I wasn't aware that the product requires assembly when it arrives. However, that said, it is a simple process to assemble it, and it's well worth the effort as this amplifier delivers high quality audio. I would reommend this product.

I wasn't aware that the product requires assembly when it arrives. However, that said, it is a simple process to assemble it, and it's well worth the effort as this amplifier delivers high quality audio. I would reommend this product.

It's all right, sir. The package arrived surprisingly fast, in excellent condition, and the booster after being put together worked without any problems. :).

Wszystko w porządku. Przesyłka przyjechała zaskakująco szybko, w doskonałym stanie, a wzmacniacz po poskładaniu zadziałał bez problemów. Dziękuję.

It's all right, sir. The package arrived surprisingly fast, in excellent condition, and the booster after being put together worked without any problems. :).