Horseshoe gallbladder preamplifier circuit

The schematic diagram is shown below. This circuit imitates the British Horseshoe "Reference" tube preamplifier. Horseshoe tube preamplifier is famous for its outstanding design concept and pure and spotless transparent sound quality. Its circuit is the most cost-effective among tube preamplifiers and is also the easiest to assemble. It uses 12AX7 and 12AT7 for two-stage amplification, with large output current, average full-frequency performance, high analytical power, and strong sound quality.