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Thrax Audio is a Bulgarian high-end audio electronics manufacturer founded in 2009-2010 by Rumen Artarski in Sofia, Bulgaria, who discovered his passion for audio at age 12 and later became a studio technician and sales expert for over 70 audio brands. The company emerged when Dave Wilson of Wilson Audio encouraged Artarski to start manufacturing after seeing his custom preamp design, leading to the official brand registration in 2009. Thrax specializes in state-of-the-art vacuum tube amplifiers, digital audio components, and loudspeakers, operating a complete in-house facility for research, manufacturing, assembly, testing, and demonstration. The company employs 22 staff members and invests at least 30% of revenue into R&D, positioning them among the few companies with comprehensive competence in the audio field. Their product range includes 16 models from valve amplification to digital audio and loudspeakers, with flagship products like the Spartacus 70-watt class-A mono power amplifiers using Emission Labs 520B-V3 tubes and custom Tamura transformers, and the reference Libra and Spartacus 300 amplifiers placing them in the exclusive 'state of the art' category. Despite having zero initial manufacturing experience, Artarski invested in advanced CNC machinery including 5-axis machines and comprehensive production lines exceeding current needs. Thrax Audio has received recognition from prestigious publications like Stereophile, The Absolute Sound, and Stereo Times, establishing their reputation for unconventional, no-compromise audiophile components distributed globally through specialized dealers.