Luxman L-507z Integrated Amplifier
The Luxman L-507z Integrated Amplifier joins Luxman’s integrated amplifier range with numerous advances and features like their newly designed “LIFES1.0” distortion canceling feedback engine. “LIFES” is a significant evolution from “ODNF” circuitry, which has long been a key advantage of Luxman amplifiers since its 2010 introduction in their X-series. The robust L-507z marks the beginning of Z-Series, all being developed to include this latest “LIFES” high-quality amplification system, a core technology also shared with their new flagship M-10x stereo/mono power amplifier.
In addition, new user features enhance both convenience and performance required by today’s music listeners. Updated front panel VU meters combine with a 7-segment LED display to improve visibility of volume levels from any listening position. Alongside the standard 6.3 mm headphone jack is a new 4mm “Pentaconn” balanced output jack for better L-R separation. Rear- panel 12 volt trigger connections are now incorporated enabling more convenient integration among automated systems or a home-theater.
Luxman will celebrate their 100th anniversary in 2025 and are proud to announce the successor to our ODNF* feedback circuitry, which has contributed to the audio quality of their amplifier products since 1999. They have developed a new amplifier feedback circuit, LIFES*, which has acquired realistic, fresh and rich musicality and overwhelming audio performance. LIFES is based on the technical concept of their epoch-making ODNF circuit and realizes excellent, dynamic characteristics without feeding back any of the original audio input signal to the main amplifier, achieving a remarkably natural sound quality, almost if it were a non-feedback equipped circuit.
The design has been conceived and expanded upon from first principles using simulation technology and painstaking research. By repeatedly auditioning, rigorously scrutinizing and combining specially selected components, they have achieved supreme performance characteristics and a level of quality suitable for use in Luxman’s next-generation products. In producing LIFES Version 1.0, by carefully reimagining the entire circuit, we succeeded in reducing the number of paralleled elements while improving performance.
The distortion in the amplification stage has been reduced to less than half of our previous system. The output stage features a 3-stage Darlington triple-paralleled push-pull configuration and achieves a class AB power output of 110W+110W (8Ω) and 210W+210W (4Ω). The high output power, comparable to that of a separate power amplifier, effortlessly realizes a natural soundstage, full of energy, to confidently drive any compatible speaker system, and bring out the best of its characteristics.
*ODNF stands for “Only Distortion Negative Feedback”.
*LIFES stands for “Luxman Integrated Feedback Engine System”.
Our latest amplification feedback engine brings music to life with LIFES Version 1.0
Luxman will celebrate our 100th anniversary in 2025 and we are proud to announce the successor to our ODNF* feedback circuitry, which has contributed to the audio quality of our amplifier products since 1999. We have developed a new amplifier feedback circuit, LIFES*, which has acquired realistic, fresh and rich musicality and overwhelming audio performance. LIFES is based on the technical concept of our epoch-making ODNF circuit and realizes excellent, dynamic characteristics without feeding back any of the original audio input signal to the main amplifier, achieving a remarkably natural sound quality, almost if it were a non-feedback equipped circuit. The design has been conceived and expanded upon from first principles using simulation technology and painstaking research. By repeatedly auditioning, rigorously scrutinizing and combining specially selected components, we have achieved supreme performance characteristics and a level of quality suitable for use in Luxman’s next-generation products. In producing LIFES Version 1.0, by carefully reimagining the entire circuit, we succeeded in reducing the number of paralleled elements while improving performance. The distortion in the amplification stage has been reduced to less than half of our previous system. The output stage features a 3-stage Darlington triple-paralleled push-pull configuration and achieves a class AB power output of 110W+110W (8Ω) and 210W+210W (4Ω). The high output power, comparable to that of a separate power amplifier, effortlessly realizes a natural soundstage, full of energy, to confidently drive any compatible speaker system, and bring out the best of its characteristics.
*LIFES stands for “Luxman Integrated Feedback Engine System”.
Large needle VU level meter and 7-segment LED
Needle-type analog VU meters are a symbolic design statement of Luxman’s solid state integrated amplifiers. The L-507Z is equipped with a large dual meter with bright LED back-lighting and high response characteristics. We have adopted such a display so the movement of the needles synchronizes with the dynamics of your music. In addition, newly included 7-segment LEDs display the attenuation level in between the left and right level meters so that the current attenuation amount can be easily seen from the listening position. The level meter back-lighting and LED display can be turned on and off using the remote control.
Precision hairline finished aluminum top panel
The rectangular chassis housing design features an ultra-thick front panel with a high-quality, blasted white finish. This has become a brand identifier of current Luxman products, with a delicate hairline finished aluminum top panel, a luxurious exterior design adopted for our high-grade amplifiers. The large ventilation slots on the top panel provide sufficient air flow and the entire chassis housing is fabricated from aluminum panels, providing excellent heat dissipation, ensuring the stable operation of this product.
New LECUA1000
Luxman’s New LECUA1000 88-step, electronically controlled attenuator is integrated into the amplifier circuit minimizing sound quality degradation over the full range of volume control. The output section of the preamplifier is equipped with discrete buffer circuitry that confidently drives the subsequent power amplifier stage.
Highly regulated power supply circuit
A highly stable, custom made EI-type power transformer and newly developed, large-capacity filter capacitors (10,000μFx 8) are combined in the power supply unit, which provides instantaneous current supply and voltage stability, easily meeting the demands of dynamic music reproduced through capable speakers.
Luxman’s original technologies
The L-507Z employs many of Luxman’s unique technologies. Beeline construction directs audio input signals via the optimum shortest route through to the speaker output and non-angled circuit board tracing realizes smooth current transmission. A loop-less chassis structure isolates the effects of ground impedance.
Various functions, switching and controls
The Luxman L-507z Integrated Amplifier features a variety of functions, such as the built-in, newly developed MM/MC compatible phono amplifier circuit that supports high-quality analog playback. Sensitive tone controls, L balance control and a loudness function are convenient for sound quality adjustments. The separate function uncouples the pre and power amplification system and a new mute button has been added to the front panel.
Newly designed parallel headphone outputs
In addition to the standard φ6.3mm output, a new φ4.4mm output has been added, with independent left and right ground wiring that greatly improves L-R separation for the listener who wants to enjoy truly three-dimensional sound.
High-quality input terminals
The RCA input terminals for LINE-1 are made from a copper alloy which delivers the conductivity of copper and durability of brass, providing support for audiophile grade cables (20mm pitch for LINE-1 and 18mm pitch for LINE2, 3 and 4).
Low impedance transmission
Large, low resistance, parallel-configured speaker relays transmit the high driving force of a large- scale output circuit without loss. The damping factor has also been improved by direct wiring to the speaker terminals using our proprietary OFC wire that realizes natural signal transmission.
Cast iron feet
The cast iron feet easily support the weight of the Luxman L-507z Integrated Amplifier and they protect delicate music signals from unnecessary vibration due to a characteristic of the design’s density gradient, gradually decreasing from the center to the periphery, which makes resonance less likely to occur.
Ergonomic aluminum remote control
The substantial, ergonomic aluminum alloy remote control can also operate compatible LUXMAN CD players released after 1996.
Specifications of the Luxman L-507z Integrated Amplifier
| Rated output | 110W+110W（8Ω） 220W+220W（4Ω） |
|---|---|
| Input sensitivity/ input impedance |
PHONO（MM）: 2.5mV / 47kΩ PHONO（MC ）： 0.3mV / 100Ω LINE: 180mV / 47kΩ BAL.LINE: 180mV / 79kΩ MAIN IN: 1.05V / 47kΩ |
| Output voltage | PRE OUT: 1V |
| Frequency response | PHONO: 20Hz to 20kHz (±0.5dB) LINE: 20Hz to 100kHz (within -3dB) |
| Total harmonic distortion | 0.007% or less (8Ω, 1kHz) 0.03% or less (8Ω, 20Hz to 20kHz) |
| S/N ratio (IHF-A) | PHONO (MM): 91dB or more PHONO (MC): 75dB or more LINE: 105dB or more |
| Volume adjustment | New LECUA1000 |
| Amplification feedback circuit | LIFES 1.0 |
| Output configuration | Bipolar 3-parallel push-pull |
| Damping factor | 300 |
|
Reviews of the Luxman L-507z Integrated Amplifier
Soundstage Ultra review
Luxman507z_Celebrate_Life –
Thank you Hifimart for your support and finally received the product.
Boy oh boy – what an amp. Never had this kind of experience in my past amps at all. The tone is perfect. actually a new revelation that this-and-that instruments are supposed to sound like this or that kinda experience. Even brush strokes on jazz tracks are very very distinctive. Always thought its a sweep or a wash. This is at different level!
Every track sounds different (of course, new gear and all) but I can tell there is huge, I mean huge difference coming from Bel Canto, Devialet etc. I truly feel that the tone is right. Every string, Guitar, Indian Santoor, Flute, Tabla, Mridangam, Jazz vocals et al … sounded different. A few tracks felt – oh is this how it is supposed to sound?. Little leaner in the beginning, but now after about 15hours, it’s on another level. I’m supposed to say hey wait for that clarity to come out etc. NOPE, I’m just listening and enjoying my music.
Clarity from top to bottom. Lows are very distinctive. Does not sound lean at all (maybe a little lean in the beginning). My low volume listening clarity is new for me and, kinda new experience. All tracks sound big/wide/super smooth, silky smooth maybe a better wording. I mean all tracks. Mids are super fantastic.
Overall Fantastic! Track by track, my euphoria kept ramping up and overwhelming me 😃.
Thank you Luxman and many respects!