My first better end system, 30 years ago, started with a Cary entry level tube amp (and a B&K digital HT preamp in front of it). That started me down a long road.
I am not familiar with that ARC amp you listed, but my next upgrade from the little Cary amp was a pair of ARC VTM 120s. Those babies sounded fantastic, even with that particular preamp of dubious audiophile quality. They could whisper sweet and quiet or they could scream. And if it wasn't for how unreliable they could be when I flipped the switches on them, I'd still own them today.