مضخم سماعات رأس متوازن ومضخم أولي Topping A90 (متوقف)

The relay-based volume control is such a clever touch—no scratchy noise when adjusting, just clean, precise steps. I've been A/B testing it against my old amp and the channel matching is noticeably better at low volumes.

The R2R volume relay gives such precise control that I can fine-tune the volume to exactly my liking, even with sensitive IEMs. It drives my planar headphones with effortless clarity and zero noise floor. A worthy upgrade that solved every nitpick I had with the previous model.

Swapped out my old amp for this one and the difference through my planar headphones was obvious within the first song. The stepped volume control clicks so precisely that I can finally fine-tune quiet late-night listening without channel imbalance. Runs cool too, even after a few hours.