Can a home amplifier replace the generator for contact mode?

An amplifier only amplifies. It needs a generator to generate the signal to be amplified.
On the other hand, a PC with Spooky2 doesn't generate any freq. It only sends instructions to the generator (via USB), for the freqs to be generated .
So you can't get any useful freqs from the rig you're proposing.

You could use a PC with a sound generation software installed on it, to feed data to an amplifier, and get freqs, but sound amplifiers work in the 20-20,000 Hz range only.
You could even use an MP3 player to feed the freqs to the amplifier (in the audible range only).

For more details, please check the link:

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