Audiophilepure

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“Rather than bore you with audiophile cliché after cliché, let’s break it down. The Pass HPA-1 is on the top tier of the world’s finest headphone amplifiers, regardless of cost, end of story. If you can live with the single-ended functionality and a single output, you’ll have a tough time getting better sound anywhere. It is an expensive headphone amplifier, but delivers the goods. If you are only looking for a headphone amplifier, this is the top of the heap.”

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” Even if you aren’t a headphone enthusiast, but have been shopping for a linestage in the $15,000 range, consider the HPA-1. (Remember, it’s only $3,500…) If you have a minimalist, yet high performance system and can live with two single-ended inputs and a lone single-ended output to your power amplifier, get your hands on an HPA-1 and spend the rest of the money on your system”