The Spartan edition is engineered for audiophiles who already know what they want — and want nothing in the way. It eliminates digital processing in favor of a clean, analog-only path, built around our celebrated tube preamp and featuring an impressive 8 RCA inputs for total system versatility.

Perfect for those who prefer using their own high-performance DACs and phonostages, Spartan gives you full flexibility over your signal chain. Customize your power module, tubes, knobs, and headphone amp — every choice tailored to your preferences.

The Billie Spartan shares the same enclosure as the Classic: compact, robust, and performance-driven. Like the Classic, Spartan is future-ready. Both the headphone module and tubes are user-upgradeable, while firmware updates install effortlessly via Mac- and PC-compatible USB-C. This is an amplifier that adapts to your system, not the other way around.

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