Luna Tube Amplifier

The Fezz Audio Luna represents the culmination of a decade of refinement in tube amplifier design. This premium Polish-made integrated amplifier combines the warmth and musicality of classic EL34 tubes with modern features and user-friendly operation, making it one of the most versatile tube amps available today. Delivering 40 watts per channel in ultralinear mode or 20 watts in triode mode, the Luna offers two distinct sonic personalities at the flip of a switch, allowing you to tailor the sound to your music and mood.

What sets the Luna apart is its innovative modular expansion system. A dedicated slot on the rear panel accepts optional Fezz Extension Boards, allowing you to add Bluetooth 5.0 connectivity, a phono MM stage, or a DAC without replacing your amplifier. Each module costs €299 and installs in minutes with simple plug-and-play operation. This future-proof design means your Luna can grow with your system, adapting to new sources and technologies as your needs evolve.

The Luna's build quality is exceptional. Constructed from thick 2mm steel plates with hidden mounting screws, the amplifier feels more like a precision instrument than typical audio equipment. Weighing 20kg, it houses in-house-manufactured toroidal transformers and premium components throughout. The award-winning Evolution series design earned the prestigious Red Dot Design Award, and it's available in seven stunning finishes at no extra charge—from elegant Republika silver-gray to vivid Burning Red to rich Evergreen—making it easy to match any interior.

User-friendliness was a primary design goal. The Luna features automatic bias control, eliminating the need for manual tube adjustments. A sophisticated tube failure protection system with discrete red LED indicators safeguards the circuitry, while a soft-start system extends tube life by gently warming the tubes before applying high voltage. The full-function metal remote control handles power, volume, and source selection, and the amplifier can automatically enter standby mode when it detects no input signal. Even the unpacking experience is thoughtfully designed, with cotton gloves included for safe tube handling and a protective cage that can be configured three ways—fully enclosed with a transparent window, open lattice only, or completely removed for maximum visual impact.

Connectivity is comprehensive. Three line-level RCA inputs provide flexibility for multiple sources, while a direct power amplifier input allows you to bypass the preamp stage entirely for use with high-quality streamers or DACs with variable output. A dedicated home theater input lets the Luna integrate into multichannel systems, and a subwoofer output makes it easy to augment compact speakers with deep bass extension. Speaker terminals accommodate both 4Ω and 8Ω loads, and a ground-lift switch helps eliminate hum if needed.

The sound of the Luna challenges conventional expectations of tube amplifiers. While it delivers the tangible, three-dimensional presentation and rich midrange warmth that tube lovers cherish, it also offers surprising speed, transparency, and bass control. The amplifier handles diverse musical genres with confidence—from intimate jazz vocals to full-scale orchestral works to driving rock and electronic music. In ultralinear mode, it plays with energy and impact, while triode mode adds a layer of sweetness and intimacy reminiscent of classic single-ended designs. The wide, well-defined soundstage provides excellent instrument separation, and the frequency response of 16 Hz to 115 kHz with less than 0.05% distortion at 1kHz demonstrates the amplifier's technical excellence.

At the heart of the Luna are four EL34 power tubes operating in a push-pull class AB configuration, driven by three 12AX7 dual triodes. The standard production version uses Electro-Harmonix tubes, though owners can experiment with alternative brands to fine-tune the sound to their preferences. Every component reflects careful engineering decisions, from the encapsulated transformers that eliminate mechanical hum to the thoughtfully organized internal layout that facilitates servicing.

Priced at €2,500, the Fezz Audio Luna delivers premium sound quality and build standards that rival amplifiers costing significantly more. It's an amplifier that honors the company's roots while pointing confidently toward the future—a design that's both musically engaging and refreshingly practical. Whether you're a seasoned tube enthusiast or discovering valve amplification for the first time, the Luna offers a rare combination of sonic magic, modern convenience, and genuine versatility, making it one of the most compelling choices in its class.