The Samson xp40iw when plug in the AC the green light shows supposedly charged but when unplugged the power dies and when the plug is plugged in and switch the power botton on the light shows red and no matter plug in a iPod or aux or mic or wireless mic there is no sound coming out and the wireless mic light is not on either.

SOURCE: Samson CO3U USB mic pattern selection switch broken

I have not used that particular mic, but have a AKG 414 which offers the same three patterns and there are three distinct and separate settings on the switch. Maybe take it back into the store where you bought it and ask for clarification there? Hope this was helpful. Peace

SOURCE: Samson C01U USB mic not working on my PC.

try this;

1.using different usb inputs on your pc desk top
2.update drivers on both your desk top and laptop
3.using a different usb cable

if it works fine on your friends computer most likely its not the mic

SOURCE: Is the position of my CO3 Samson Mic. in the right place

exactly how did you place your mic? Because in the picture you are showing there are placed two or three mics. The best sound quality does not always depend on the up or down position of your mic. It has a lot to with the acoustics of the room you are recording in, the distance you vocalist is standing and even of you use a windscreen or a reflection wall. The best advice is clap you hands a few times in your room and make sure the clap turns dead. If you clap go's silently dead, without hitting any walls or windows that reflect the sound, than you will have a good position to record.

SOURCE: Hi, I have one Samson Auro

If you read the TRUE specs on this speaker it is really a 200 Watt RMS unit. Make sure you are using balanced lines to the speaker XLR or TRS cables. The mixer should NOT be a passive mixer as these do NOT generate true balanced lines. Make sure the mic can't "hear" the speaker or you may be getting supersonic feedback that is above your hearing range that saturates the amp. If *********** can't stand to be ain a 15 foot square room with teh level you are generating, it is TOO loud for this unit to handle.