well if your connecting it to a computer u might just wanna try an xlr male to xlr female cable as your input, and a xlr male to 3.5mm jack (mini jack) to your computers audio interface...
Yes it is just a preamp you need an audio interface that will connect the preamp to the audio interface into the computer and obviously a Mic in front of it
Usually you wouldn't need to but if you wanted to offset it from balanced or if your connection has a stronger signal in one channel than the other you can connect a preamp or an amplifier with balance control and audio inputs as well as out puts to the system. You would connect the wires going in to the surround system into the input of the preamp and then connect the output of the preamp into the input of the surround system. CAUTION do not turn the preamp volume up to high or you risk blowing the surround system.
A 3.5 mm input is a line level signal, and a turntable has a phono level signal. You can connect these, but you will need a phono preamp to go in between the two. An RCA cable plugs into to the preamp from the turntable, and an RCA to 3.5mm cable connects the preamp to the stereo.
If the tv has audio inputs it can be done. A preamp is needed only if you want to plug a mic. into a LINE IN connector.
I would not advise this, because of the difference of impedence.
Connect your recording device to the preamp output on the back.
A preamp A preamp.
There are many places online to buy a preamp. Amazon sell a range of preamp products including ultra compact preamps. The site Preamp also stocks a wide range of preamps.
To test the output of an acoustic guitar preamp you may use output tubes to test. This will test the preamp voltage.
These jacks are used to connect the head unit to a separate, more powerful amplifier. If you are powering your speakers directly with your head unit then these jacks are not headed. They can also connect to a subwoofer amp if a crossover is used to block the higher frequencies.
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The Marantz TT551 needs a phono preamp (usually found in older stereo receivers) and powered speakers or the amplifier inside the old stereo.