Triode Corporation TRV-A300XR 300B Integrated Amplifier
Best tube amplifier for audiophiles seeking pure, warm analog sound.
The Triode Corporation TRV-A300XR is a Class A single-ended triode integrated amplifier designed to showcase the capabilities of the 300B tube. It features a fixed bias method with an easily accessible bias meter and adjustment volume for optimal tube performance. The power supply utilizes a Schottky barrier rectifier diode and a toroidal power transformer for excellent efficiency and response. This amplifier includes a built-in MM phono equalizer circuit and a remote controller for volume adjustment. It comes with the amplifier, tubes, grill, remote, power cable, and user manual.
$2250.00
Owner Satisfaction
4.7
/ 5
Category Rank
421
/ 1719
#421 in Power Amplifiers
Price vs Category Average
-73%
Below average
Amplifier Type
Class A Single-Ended Triode
/ Class A Single-Ended Triode
Who it's for
- Audiophiles seeking intimate, lifelike vocal and acoustic reproduction
- Design-conscious listeners wanting a beautiful, high-end centerpiece
- Purists prioritizing emotional connection and holographic imaging
Who should skip it
- Owners of low-sensitivity speakers requiring high-wattage amplification
- Budget-focused buyers wary of high initial and maintenance costs
- Listeners who enjoy high-volume, complex, or highly dynamic music
Performance breakdown
Sonic Purity
Single-ended Class A topology delivers the classic, lush 300B tube sound.
Maintenance Accessibility
Integrated bias meter makes tube upkeep simple for non-technical owners.
Power Efficiency
Schottky diodes and toroidal transformers ensure stable, responsive power delivery.
Phono Integration
Built-in MM stage eliminates the need for an external phono preamp.
Operational Convenience
Remote volume control adds a modern touch to a vintage-inspired design.
Build Integrity
Robust construction and thoughtful component layout reflect high-end Japanese engineering.
Key Specs
Amplifier Type
Class A Single-Ended Triode
Tube Type
300B
Bias Method
Fixed Bias with Meter and Adjustment
Rectifier
Sic Schottky barrier rectifier diode
Power Transformer
Toroidal
Phono Equalizer
MM type
Power Supply
US version - 120V
Shipping Weight
37.48 lbs
Features
- Class A single-ended triode design for pure sound
- Easy bias adjustment with built-in meter
- High-efficiency power supply with toroidal transformer
- Integrated MM phono equalizer
- Includes remote control for convenient volume adjustment
- Comes with original tubes, grill, remote, power cable, and manual
What customers say
Customers consistently praise the Triode Corporation TRV A300XR for its exceptional sound quality, often describing its audio reproduction as remarkably rich, warm, and detailed. Many highlight the amplifier's ability to bring recordings to life with a captivating musicality. The elegant design and robust build quality also receive significant appreciation, reinforcing its premium appeal. Owners feel a strong connection to the craftsmanship and the immersive listening experience it provides, making it a cherished centerpiece for serious audio enthusiasts.
Know before you buy
The Class A single-ended design is prized for its sonic purity and harmonic richness. By using the 300B tube in this configuration, the amplifier delivers a highly musical, detailed sound profile that is often described as warm and lifelike.
It is straightforward. The TRV-A300XR features a built-in bias meter and an accessible adjustment volume, allowing you to monitor and calibrate the tubes yourself without needing specialized external equipment.
Yes, this amplifier includes a built-in MM (moving magnet) phono equalizer. You can connect a turntable equipped with an MM cartridge directly to the phono input without needing an external phono stage.
The Schottky barrier rectifier diode is used for its high efficiency and fast switching speed. This contributes to a cleaner power delivery and improved transient response, ensuring the amplifier remains responsive and stable during complex musical passages.
The included remote control is specifically designed for convenient volume adjustment. Other functions, such as input selection or bias calibration, must be performed manually on the unit itself.
This is the US version, which is configured for standard 120V power outlets. As with any tube amplifier, ensure you place the unit in a well-ventilated area to allow for proper heat dissipation during operation.
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$2250