Set up an analog tape recorder. For best results, use a four-track or six-track tape recorder, as these are designed specifically for recording multiple layers of audio onto analog tape. Even if you require only one layer of analog audio, you can still benefit from the EQ settings and customization that multi-trackers provide. Insert a blank tape into your recorder, rewind it to the beginning and familiarize yourself with the layout of the equipment. On a standard four-track recorder, you should see four channel strips (vertical columns), each containing sliders and knobs. Each column corresponds to a single input, such as an instrument or microphone.
Connect your instruments, microphones, turntables, samplers or other audio devices to your recorder. If using a multi-track tape recorder, connect one input to each "Line-In" or "Input" jack, all of which you will find above their corresponding channel strips (sometimes on the rear panel). If you need to connect a quarter-inch cable to an eighth-inch audio jack, use 1/8-inch adapters. For example, some recorders contain only the smaller, headphone-sized input jacks, not suitable for guitar cables.
Connect a pair of headphones to your tape recorder and listen to your input(s). Even if your tape recorder contains internal speakers, a pair of headphones will still give you the best perspective. Test each instrument, microphone or other device and adjust the channel strip settings accordingly. For example, if you connect a guitar to input 1, adjust its settings using the first column on your recorder. Use the "Level" slider (or knob) to adjust volume and use your "EQ" knobs to adjust your frequency ranges (treble, mid and bass). If you plan to record multiple inputs simultaneously (like for a band demo), play them all together and adjust your channels until you find the right balance.
Situate your equipment in a quiet environment (preferably near a vacant corner), if using microphones to record vocals or acoustic instruments. You want your recording to remain as noise-free as possible, and an empty corner will provide you with natural reverberation. Close any windows and doors, turn off any electronic or other noise-generating equipment. Avoid recording in a closet, as this may provide too much feedback from the excess reverberation and echo. If you want to turn your closet into a recording booth, install acoustic or foam paneling along the walls inside.
Press "Record" and begin your analog recording session. Remain focused and try to maintain as much accuracy and fluidity as possible, if recording instrumentation or vocals. Unlike digital recording, analog recording does not permit you to adjust your mistakes with the click of a button. If you do make a mistake, rewind your tape and try again.