

I have owned the Focal Bathys for a few months now, having replaced the Sony XM5, and every time I put them on, I know I'm in for a good time. Verdict: A reference class open-back headphones. They are open-back headphones that pair exceptionally well with tube amps but are driven easily from most high-resolution sources. The HD 660S2 is more refined, making it one of the best-sounding Sennheiser headphonesof recent years, but it still retains the outgoing model's slightly mid-centric and warmer tones and still retains incredible detail. Sennheiser also doesn't make unnecessary upgrades and, as such, has a longer product life cycle than other companies that try to catch the flavor of the month vibe by releasing multiple models without significant improvements. This iconic headphone is better than ever, with a revised tuning and increased lower frequencies. They were great for critical listening and studio work but perhaps lacked the range and versatility to sound musical. The original HD660 headphones were one of the best-value audiophile-grade headphones on the planet. These are the long-awaited updates to the excellent value Sennheiser HD660 and Sennheiser kept a lot the same but made the tuning even more versatile.
