SE300B Mono Power Amplifier
Best single-ended amplifier for audiophiles seeking pure, vintage tube sound.
Experience the golden age of vacuum tube audio with the THÖRESS SE300B Mono Power Amplifier. This all-tube, single-ended Class-A amplifier delivers up to 10 watts of pure, unadulterated sound. Built with a minimalist, zero-feedback design, it features an in-house C-core output transformer for exceptional clarity and texture. The amplifier boasts meticulous point-to-point hand wiring and a robust non-magnetic aluminum case, ensuring both sonic purity and lasting reliability. It's a tribute to professional audio components, offering a rich, dynamic, and clear listening experience.
$12995.00
Owner Satisfaction
4.8
/ 5
Category Rank
38
/ 2553
#38 in Power Amplifiers
Price vs Category Average
+57%
Above average
Amplifier Class
Class A, Tube
/ Class A, Tube
Who it's for
- Tube enthusiasts prioritizing consistent performance and extended component longevity
- Audiophiles seeking authentic midrange realism and holographic soundstage depth
- Collectors valuing heirloom-quality German craftsmanship and long-term durability
Who should skip it
- Owners of low-sensitivity speakers requiring significant power for room-filling volume
- Budget-conscious listeners seeking accessible high-end audio solutions
- Users preferring low-maintenance equipment without recurring tube replacement expenses
Performance breakdown
Sonic Purity
Zero-feedback design delivers an exceptionally transparent and uncolored vacuum tube sound.
Build Integrity
Meticulous point-to-point hand wiring ensures professional-grade durability and signal path integrity.
Impedance Versatility
Flexible jumper settings allow seamless matching with diverse speaker load requirements.
Noise Floor
DC heated tubes and custom transformers keep background interference impressively low.
Power Output
Ten watts requires high-sensitivity speakers to reach full dynamic potential.
Aesthetic Craftsmanship
Non-magnetic aluminum chassis provides a robust, industrial look that exudes quality.
Key Specs
Amplifier Class
Class A, Tube
Output Power
10 watts per channel
Channels
1 (Mono Block)
Output Impedance Matching
4, 8, or 16 ohms via jumpers
Dimensions
150 x 595 x H330 mm
Weight
14 Kg each Mono Block
Power Supply
Custom in-house produced ultra-low noise mains transformer
Construction
Non-magnetic aluminum case, powder-coated chassis
Features
- Classic 300B tube in single-ended Class-A
- Zero-feedback design for sonic purity
- In-house C-core output transformer
- DC heated 300B tube for low noise
- Adjustable hum control
- Mono block configuration
- Point-to-point hand wiring
- Customizable mains voltage
What customers say
The THÖRESS SE300B Mono Power Amplifier earns high praise for its extraordinary sonic purity and musicality. Listeners consistently note the holographic soundstage and uncannily natural timbre. A key theme is its dynamic punch and speed, surpassing typical single-ended triode designs. Build quality is robust, signaling bespoke craftsmanship. The core sentiment is that the amplifier allows deep musical connection, offering an emotionally engaging experience. This top-tier performance is balanced by its ultra-luxury cost and low power output, requiring high-efficiency speakers. For those meeting the investment and system needs, it delivers a modern classic listening experience.
Know before you buy
Because this amplifier produces 10 watts of power, it is best paired with high-sensitivity speakers, typically those rated at 95dB or higher. This ensures the amplifier can drive your speakers to satisfying volumes without clipping.
The SE300B features internal jumpers that allow you to select between 4, 8, or 16-ohm settings. This ensures the amplifier is properly matched to the impedance of your loudspeakers for optimal power transfer and frequency response.
While zero-feedback designs prioritize sonic purity and natural harmonics, THÖRESS mitigates potential noise by using DC-heated 300B tubes and a custom ultra-low noise mains transformer. Additionally, the unit includes an adjustable hum control to help you fine-tune the background silence in your specific system.
The SE300B is a mono block configuration, meaning each unit is a single-channel amplifier. You will need to purchase two units to achieve a stereo setup.
Point-to-point wiring eliminates the need for printed circuit boards, which can introduce unwanted capacitance and signal degradation. This traditional construction method ensures a shorter, cleaner signal path and makes the unit easier to service over its long lifespan.
Yes, the SE300B features standard RCA inputs, making it compatible with most high-quality preamplifiers. Ensure your preamplifier has an appropriate output impedance to drive the amplifier's input stage effectively.
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$12995