Welcome to high-end audio. If you are just beginning to explore this world, the words and numbers on a product page can feel like a foreign language. This guide walks you through the Luxman L-507Z in plain English, so you can understand exactly what it does, why it is built the way it is, and whether it is a good fit for you. No jargon left unexplained, and no assumptions about what you already know.
What Is the Luxman L-507Z, and Where Does It Fit?
What exactly is an integrated amplifier?
An integrated amplifier is the heart of a music system, combining two jobs in one box. First it lets you select and control your music sources (like a turntable or a CD player). Second it provides the power that drives your loudspeakers. In a bigger system these two jobs are split between a "preamplifier" and a "power amplifier," but an integrated puts both under one lid. That makes it simpler, tidier, and easier to live with, which is exactly what you want when you are starting out.
Where does the L-507Z sit in Luxman's range?
The L-507Z sits in the upper part of Luxman's integrated amplifier lineup, just below the flagship L-509Z. It carries much of the same modern engineering as the more expensive models while remaining a genuinely usable, everyday centrepiece for a serious music system. In other words, it is a strong, refined performer that does not require you to build a rack of separate boxes.
The Amplifier Circuit and Sound Quality
What is LIFES 1.0, and why should I care?
LIFES 1.0 (Luxman Integrated Feedback Engine System) is the amplification circuit inside the L-507Z, and it is the single most important reason this amplifier sounds the way it does. Every amplifier uses something called "negative feedback" to keep itself accurate. LIFES is Luxman's refined way of applying that feedback so that distortion and noise stay extremely low across the entire range of sound your ears can hear, while the music still sounds natural and alive rather than clinical. It is the current generation of Luxman circuitry, introduced with the Z series, and it replaced the older ODNF design used in previous models.
What does the THD figure of 0.007 percent actually mean?
THD stands for Total Harmonic Distortion, and 0.007 percent or less means the amplifier adds almost nothing of its own to the music. Distortion is any unwanted change the amplifier makes to the original signal. The lower the number, the more faithfully you hear the recording as it was made. A figure of 0.007 percent (measured at 8 ohms, 1 kHz) is very low, which is a sign of clean, transparent sound.
What does the signal-to-noise ratio of 105 dB tell me?
A signal-to-noise ratio of 105 dB or more (on the LINE input) means the music sits far above any background hiss or hum. Think of it as the difference between the sound you want and the faint electronic noise you do not. A high number like this means quiet passages stay quiet and silences stay black, so you hear fine detail without a haze of noise underneath.
Volume, Power, and Speaker Control
What is the New LECUA 1000 volume control, and how does it work?
The New LECUA 1000 (Luxman Electronically Controlled Ultimate Attenuator) is the L-507Z's volume control, and it works very differently from a traditional volume knob. Most amplifiers use a simple variable resistor, which can wear out over time and cause the left and right channels to drift out of balance. LECUA instead uses a computer-controlled array of fixed resistors that switch in and out as you turn the knob. The result is precise left and right balance, no mechanical wear, and consistent sound quality whether you are listening quietly late at night or turning things up.
How much power does the L-507Z have, and is it enough?
The L-507Z delivers 110 watts per channel into 8 ohms, and 210 watts per channel into 4 ohms. The "per channel" part means each of your two speakers gets its own dedicated power. The two figures matter because loudspeakers present different electrical loads, described in "ohms." A 4 ohm speaker is harder to drive than an 8 ohm one, and the fact that the L-507Z's power almost doubles into 4 ohms shows it has the strength and stability to handle demanding speakers with ease. For the vast majority of homes and speakers, this is generous, confident power.
What is the damping factor of 300, and why does it matter?
Damping factor describes how firmly the amplifier grips and controls your speaker's movement, and a value of 300 is high. When your amplifier tells a speaker's woofer to stop moving, you want it to stop cleanly rather than wobble on. A high damping factor means tight, well controlled bass and a sense of authority. Luxman achieves this with a robust output stage designed to keep a firm hold on the speaker.
Connections and Everyday Use
What can I plug into the L-507Z?
The L-507Z gives you plenty of inputs for a growing system. You get three standard LINE inputs (for sources like a streamer or CD player using regular RCA cables), two balanced XLR inputs (a professional-style connection that resists noise over longer cable runs), a dedicated PHONO input for a turntable, and a MAIN IN input. The MAIN IN lets you feed a signal straight into the amplifier's power section, which is useful later if you expand into a larger system.
What is the PHONO input, and do I need it for a turntable?
The PHONO input is a special input built specifically for turntables, and yes, you need it if you play vinyl. Record players produce a very small and specially shaped signal that must be boosted and corrected before it can be played. The L-507Z's built-in phono stage does this for you, and it supports both types of cartridge: MM (moving magnet) and MC (moving coil). The input sensitivity figures (2.5 mV for MM and 0.3 mV for MC) simply reflect how small those signals are, which is why a dedicated phono stage is essential rather than a regular LINE input.
What outputs and speaker options does it offer?
The L-507Z has a PRE OUT, two sets of speaker terminals labelled A and B, and a headphone socket. The Speaker A and B terminals let you connect two pairs of speakers, useful if you have speakers in another room or simply like to switch between two pairs. The headphone output lets you enjoy private listening driven by the same quality electronics. The PRE OUT sends the volume-controlled signal onward, giving you room to expand your system in future.
What does the frequency response range tell me?
Frequency response describes the full span of sound the amplifier reproduces, from deep bass to high treble. On the LINE inputs the L-507Z covers 20 Hz to 100 kHz, which comfortably exceeds the range of human hearing, so nothing musical is left out. The PHONO input covers 20 Hz to 20 kHz within very tight tolerances, matching the standard range of vinyl playback.
Build Quality and Why It Matters
Why does Luxman's build quality make a real difference?
Luxman build quality matters because a heavy, well engineered chassis is a large part of why these amplifiers sound clean and last for decades. Founded in Japan in 1925, Luxman is one of the oldest names in high-end audio, and the L-507Z reflects that heritage. It weighs 25.4 kg and measures 440 x 178 x 454 mm, and that mass is not for show. Inside you find a high-rigidity chassis, a large low-noise power transformer, big filter capacitors, and precision machined aluminium panels, all built in Yokohama. This solid foundation keeps vibration and electrical noise at bay, which is exactly what lets the quiet backgrounds and low distortion figures come through in real listening.
Who Is the Luxman L-507Z For?
Is the L-507Z a good choice for someone new to high-end audio?
Yes, the L-507Z is an excellent choice for a newcomer who wants a serious, long-term centrepiece without managing a stack of separate components. It gives you generous power, a built-in phono stage for vinyl, flexible inputs including balanced connections, and the reassurance of Luxman engineering that will serve you for many years. It suits anyone building a quality two-channel music system who values clean, natural sound and wants room to grow. If you want one beautifully made box to sit at the heart of your listening for a long time to come, the L-507Z deserves a close look.