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If your laptop uses vacuum tubes in its output that feed a matching transformer then it needs a load. If it is solid state then it works even better (lower distortion) with a high impedance load.
You know, I thought a tube used in a computer sound card would be just crazy enough, so I googled it. You can get one for your desktop.If your laptop uses vacuum tubes in its output that feed a matching transformer then it needs a load.
You can get one for your desktop.
A Tube Soundcard: YES! - The T-T computer: tubes and transistors - Softpedia
Plan on running audio output from laptop into high impedence amp input. Do I need to add a 10-20 ohm resistor to the laptop output to represent the normal earphone/speaker load?
Or is it ok to run directly into high impedence input?
Hahaha that's a hoot. As if there wasn't already enough useless crap in your PC making heat.