That should be OK... You shouldn't be getting such horrible results. I assume you turned-up the gain on the Hosa?The adapter they sold me was Hosa Technology, TrackLink Microphone to USB Interface, XLR3F to USB Type A
You shouldn't "need" a USB mic... Most "studio style" USB mics (AKA "podcast mics") are condenser mics which tend to be hotter (louder) and they tend to have more high-frequency sensitivity for a more "crisp" sound. And of course, they are super-convenient.To Koz: Is using the small mic plug as desirable as the USB? Is it really advisable to use an adapter at all, rather than an actual USB mic?
The downsides are, you can generally use only one USB mic at a time (no stereo or multitracking) and you can't use them with a mixer or PA system.
The SM57/58 is the most popular mic of all time., It's a fine mic and it will last you a lifetime. It's not generally used in pro studios (except the SM57 is used to record electric guitar and snare drums) but it's used on stage everywhere and there's nothing "wrong" with using it.
I think your headphones already have an adapter and you just have to unscrew it.Also, they sold me Yamaha RH3C Professional Stereo Headphones. It has a large jack, no such outlet on my computer. Will an adapter cord work for this? If so, is USB or other outlet best?
Speaking of headphones... If you monitor yourself through the computer you can get latency (delay). Often this is can be minimized and managed, but it can become a "battle". You'll notice in Koz's photo of the Shure X2u, he has ear buds plugged-in. An interface like that with "zero-latency hardware monitoring" will avoid those issues. Some USB podcast mics (such as the Blue Yeti) have a similar feature.