Triode TRX-M845 Review: Prepare to be immersed in a world of tube-driven splendour with the Triode TRX-M845 Tube Monoblock Power Amplifiers. These monaural beasts combine the regal 845 tube with a class-A single-ended design that elevates every note to an art form. Whether you’re orchestrating a sprawling symphony or chasing the subtlest jazz nuance, the TRX-M845 will reward you with an audio experience that’s nothing short of transformative.

Design and Build Quality

The Triode TRX-M845 is housed in a robust, powder-coated chassis measuring 580 mm × 440 mm × 300 mm and weighing 58 kg per monoblock. The layout is pure simplicity—tubes positioned front-and-centre under a protective cap, high-grade German Neutrik XLR sockets at the rear, and banana-plug friendly speaker terminals. Every control, from the bias selector to the NFB (0 dB/3 dB/6 dB) switch, feels precise and purposeful, reflecting Triode’s commitment to craftsmanship.

Sonic Performance

At the heart of the TRX-M845 lies a parallel single-ended, class-A circuit delivering a robust 50 W into 8 Ω. The frequency response extends from a commanding 10 Hz to 50 kHz (–2 dB), granting you effortless bass control down to the deepest organ pedal and crystal-clear extension into the ultrasonic realm. A stellar 90 dB signal-to-noise ratio and just 0.1% total harmonic distortion (THD) ensures the amplifier conveys texture, air and decay without any unwanted noise or glare.

Whether using RCA or balanced XLR inputs (switchable 2-hot or 3-hot), the 0.9 V sensitivity and 100 kΩ input impedance make integration with preamplifiers and DACs seamless. Switching output taps for 4 Ω, 6 Ω, 8 Ω or 16 Ω speakers is swift—ideal if you rotate between high-efficiency electrostatics and dynamic floorstanders.

Technical Deep Dive

• Circuit: 845 A-class parallel SE monoblock
• Tubes: 2 × 845 (or optional 2 × 211), driver 1 × 845, balance 1 × 12AU7, preamp 1 × 6SN7
• Self–bias system with visible bias check meter
• Selectable NFB for tonal tuning
• Power draw: 280 W (standby efficiency considered)

Flip the bias switch and observe the glowing filament of an 845 tube as it stabilises. The user-friendly meters and selectors invite you to fine-tune the amplifier’s operating point for optimal warmth and midrange bloom.

Who Should Consider the TRX-M845?

If you’re an audiophile seeking a truly organic, tube-centric presentation, the TRX-M845 is a perfect match. Owners of high-efficiency speakers (95 dB and above) will relish the dynamic slam and natural timbre. Even with more demanding loads, its substantial current delivery ensures you never feel short-changed.

For those sculpting a two-channel system or integrating into a dedicated listening room, this pair of monoblocks can be the cornerstone of sonic nirvana. Speak with our team at The Audio Tailor to customise your setup and explore matching preamplifiers and cabling options.

Pros & Cons

• Pros:
  • Exquisite 845 tube tonality with natural harmonic richness
  • Class-A, single-ended power for uncoloured, transparent sound
  • Excellent build quality and user-friendly bias/NFB controls
  • Flexible input/output options for diverse system compatibility
  • Impressive frequency extension and low distortion figures
• Cons:
  • 50 W per channel may challenge ultra low-sensitivity speakers (< 85 dB)
  • Weighty monoblocks require sturdy racks or stands

Experience the Extraordinary

The Triode TRX-M845 Tube Monoblock Power Amplifiers are more than just gear—they’re gatekeepers to an emotional, vivid soundstage that conveys every nuance of your music collection. Ready to hear the difference? Discover more on our product page: Triode TRX-M845 Tube Monoblock Power Amplifiers or call us on 1300 308 711 to speak with one of our HiFi specialists.

Elevate your listening sessions—connect with our Brisbane-based team today and step into a new era of audio excellence!