Reference 10 Line Stage

About the Reference 10 Line Stage

The Audio Research Reference 10 is a statement-level, dual-mono line preamplifier designed and hand-built in Minnesota. It features a fully discrete, all-tube, pure Class-A signal path with zero feedback. The preamplifier consists of two separate chassis: a main control unit and an external power supply, connected by umbilical cords. Each channel has dual, separate low- and high-voltage transformers, dual-mono vacuum-tube regulation (one 6H30 and one 6550WE per channel), and dual-mono audio circuits (four 6H30 tubes per channel). The unit offers a modern user interface with an interactive touchscreen and a remote control duplicating all functions. It supports seven inputs (balanced and single-ended) and three outputs, with extensive system integration and customization options. The Reference 10 delivers a frequency response of 0.1Hz to 200kHz (+0/-3dB), distortion under 0.006% at 2V RMS balanced output, and a noise floor 109dB below 2V RMS output. Its design emphasizes musical authenticity, dynamic range, and spatial resolution, making it a top-tier tube preamplifier for audiophiles. The chassis is finished in natural anodized silver with thick panels and a refined aesthetic, including a large volume knob and a touchscreen display. The preamplifier weighs approximately 23.6 pounds for the control unit and 37.7 pounds for the power supply, with dimensions of 19"W x 7"H x 15.5"D per chassis. Recommended tube replacement intervals are about 3000 hours for 6H30 tubes and 2000 hours for 6550 tubes. The Reference 10 is