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Thoress 300b Monoblock Power Amplifier Selling a pair of Thoress 300b Monoblock, one of the finest Single ended single tube 300b monoblocks on the market. This is one of the quietest 300b amp I could hear, neutral and musical. This unit I bought from Tony who was former distributor of Thoress in Australia. The units was customised for Australia high 240-250v grid with Thoress in-house handmade transformer rated 250v. This is extremely important for reliability as the precious 300b tubes can last for a long time. come with 2 x KR300, a pair of Takasuki 300b is also available for additio
Condition unknown on this Thöress 300B monoblock power amp pushes the AUD 8,000 asking price into ambitious territory—it's above the median AUD 7,079 from four recent comparable listings (25th percentile AUD 2,812, 75th AUD 11,019). Without photos or service history, you're paying a premium for the brand's SET purity and that euphonic 300B glow, but typical used Thöress gear in good shape trades closer to the lower end of that spread unless it's mint or modded.
Buyers, verify tube life first—original stock 300Bs degrade fast under bias stress, so demand matched NOS replacements or recent tests. Check for hum from the output transformers (a known Thöress quirk if grounding's off) and confirm both monoblocks include the stock power cord, fuses, and any maker's manual; missing bits can add AUD 500+ to restore.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Thöress, officially Thöress Puristic Audio Apparatus, emerged from Aachen, Germany, around 2000, founded by Reinhard Thöress shortly after his graduation in mathematics (with physics as a subsidiary) from RWTH Aachen University. This historic city near the borders of Germany, Belgium, and the Netherlands provided the backdrop for his laboratory, where he began crafting audio components driven by a passion for purist design. With over two decades of hands-on development, the brand embodies a solitary artisan's dedication to analog-era excellence.
The company specializes in high-end tube-based electronics, including hard-wired triode preamplifiers, power amplifiers, and integrated models like the EHT series, all featuring hand-wound transformers for exceptional purity. Thöress also produces highly efficient horn speakers and has ventured into niche analog territory with a precision mass-loaded turntable. This focused lineup eschews digital converters, headphones, or cables, prioritizing vacuum-tube warmth and mechanical simplicity over mass-market versatility.
Positioned as a niche boutique in the ultra-high-end hi-fi market, Thöress commands reverence among connoisseurs for its uncompromising, fully handcrafted craftsmanship and musical transparency. Far from mainstream or mid-tier, it appeals to discerning collectors seeking rare, emotionally engaging sound over raw power or specs, often through limited production and direct European distribution.
See all Thöress listings on RADAR.
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