Pass Labs HPA-1c

As a dedicated headphone amplifier and high-performance line-level preamplifier, the HPA-1c excels in both roles. Its discrete, class A design and robust output stage make it ideal for driving demanding headphones or anchoring a reference speaker system. Headphone Output: Delivers up to 2 watts into 32 ohms with just 2 ohms output impedance, providing authoritative control over dynamic and planar magnetic headphones—including low-impedance and high-sensitivity models. Preamplifier Output: The preamp section drives typical power amplifier loads (10kΩ or higher) with exceptionally low output impedance, ensuring clean signal transfer and maximum flexibility in system integration.