@lincnabby
The $770 Monoprice Liquid Platinum is a hybrid amp, the $100 Monoprice Liquid Spark is solid-state.
Also, the tube really does nothing, the frequency response is flat and the output impedance is “normal”, so it will not add any warmth (bass boost due to high output impedance, and possibly an engineered treble roll-off) compared to a true tube amp.
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As for a preamp for the Atom, the Atom already is one, it has a volume knob and can gain th incoming signal if needed (the output of your DAC shouldn’t need gaining).
The $770 Monoprice Liquid Platinum is a hybrid amp, the $100 Monoprice Liquid Spark is solid-state.
Also, the tube really does nothing, the frequency response is flat and the output impedance is “normal”, so it will not add any warmth (bass boost due to high output impedance, and possibly an engineered treble roll-off) compared to a true tube amp.
____
As for a preamp for the Atom, the Atom already is one, it has a volume knob and can gain th incoming signal if needed (the output of your DAC shouldn’t need gaining).