I recently reviewed Sony’s entry-level CH-720N noise-canceling headphones. They’re quite good, but if you can’t afford them — they list for $150 but are currently discounted to $128 — the company’s new budget on-ear CH-520 headphones are an intriguing option, as they’re selling for as low as $40, or 33% less than their list price of $60. The only rub is that deal is for the black version of the headphones — the blue and white versions remain at $48,
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