Luxman L-507UXII (2022)
The Luxman L-507UXII is an integrated amplifier released in 2022. It succeeds the L-507u and is part of Luxman's UX series. It has refined circuitry, better build quality and a more sophisticated look than the older model.
Design and Build Quality
The L-507UXII sits in a rigid, double-chassis aluminum and steel enclosure. The front panel is brushed aluminum with a minimalist layout. The large, centrally mounted volume knob has a smooth, precise feel and a satisfying mechanical click.
The UXII designation marks an evolution in Luxman's design, blending traditional analog circuitry with modern refinement. The amplifier comes in two finishes: silver and black. Precision-cut heat sinks on the sides manage ventilation. They help with cooling and give the amplifier a symmetrical look.
Circuit Design and Technology
The L-507UXII uses a discrete, fully balanced circuit design with no integrated circuits in the signal path. That keeps the signal clean and the distortion low. The amplifier uses Luxman's proprietary ODNF (Optimum Direct Negative Feedback) 5.0 circuitry, a refined version of their long-standing feedback topology. ODNF 5.0 improves transient response, enhances damping factor and reduces phase distortion, which gives a more dynamic and accurate sound.
The power supply has a high-capacity toroidal transformer and a bank of high-quality electrolytic capacitors. This keeps operation stable under demanding loads. The L-507UXII delivers 90 watts per channel into 8 ohms and 150 watts into 4 ohms, enough to drive a wide range of speakers with authority and control.
Input selection is handled by high-grade relays, which preserve signal integrity and minimize channel crosstalk. There are five line-level inputs (RCA), including a dedicated moving magnet (MM) phono stage for turntable users. The phono stage is built on discrete JFET transistors and is optimized for high-impedance cartridges. It gives warm, detailed vinyl playback with excellent noise rejection.
Sound Characteristics
The sound is balanced, transparent and musically engaging, and very much Luxman. It has a wide, three-dimensional soundstage with precise imaging and good depth. Bass is tight and well controlled, thanks to a high damping factor. The midrange is lush and natural, especially with vocals and acoustic instruments.
Treble is smooth and extended, without the harshness that can plague some solid-state designs. The amplifier brings out subtle nuances in recordings and reveals micro-details without drawing attention to itself. It handles classical symphonies, jazz trios and rock albums equally well.
The L-507UXII scales well with the rest of the system. Paired with high-efficiency speakers, it delivers a dynamic, room-filling performance. With more demanding loads, it stays composed and articulate and never sounds strained. Its neutral tonal balance lets the character of the speakers and recordings come through.
Features and Connectivity
The L-507UXII skips digital inputs and streaming in favor of a dedicated analog design. All inputs are analog RCA, with gold-plated jacks for superior conductivity. A dedicated preamp output allows for future system expansion, such as adding a power amplifier for bi-amping or subwoofer integration.
The front panel includes a headphone amplifier for private listening. The headphone output is driven by a dedicated circuit and works exceptionally well with high-impedance headphones, giving a spacious and dynamic soundstage.
Volume control is a precision stepped attenuator, which ensures accurate channel balance and long-term reliability. Potentiometers can wear out and introduce noise. A stepped attenuator uses discrete resistors for each volume level, so signal integrity holds across the entire range.
Position in the Luxman Lineup
In Luxman's integrated amplifier lineup, the L-507UXII sits below the flagship L-590AXII and above the more compact L-509X. It combines advanced technology, a luxurious build and musicality. It is not a power amplifier with a preamp section tacked on. It is a fully realized integrated design where every component is optimized to work together.
Luxman does its engineering in-house. The L-507UXII has a custom-wound transformer and hand-selected transistors, each chosen for its contribution to the sound. The company's analog heritage dates back to 1925.
Legacy and Value
In an era where digital streaming and smart amplifiers dominate, the Luxman L-507UXII stands as a testament to the enduring appeal of pure analog audio. It appeals to a niche but passionate audience—audiophiles who value craftsmanship, longevity, and sonic truth over convenience and connectivity.
Used units retain strong resale value, reflecting Luxman's reputation for durability. The L-507UXII is not a product of planned obsolescence. It is built to last for decades, in performance and in looks.
Conclusion
The L-507UXII puts out 90 watts, uses ODNF 5.0 circuitry, has a discrete phono stage and an exquisite build. It comes from nearly a century of Japanese audio innovation.
The L-507UXII suits a high-end two-channel system built around vinyl, CD or high-resolution digital sources (via an external DAC). It offers a combination of power, refinement and musicality. It lacks modern smart features.
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