Luxman L-505Z
Beschrijving / Description
Designed in honor of our L-505 amplifier, which continues to fascinate many audio enthusiasts as possibly our most familiar hi-fi model and equipped with our newly developed LIFES amplifier feedback engine, which is at the core of LUXMAN's contemporary designs, we would like to complete the Z series circle with the L-505Z. While inheriting all the high-quality sound and design know-how from our higher-end models, it has achieved even more as a multifunctional integrated amplifier. Redefining the standard and now entering a new era, the L-505Z invites you into the world of exciting high-end audio.
Our latest amplification feedback engine brings music to life with LIFES Version 1.0
The L-505Z, like the L-509Z and L-507Z, is equipped with our LIFES high quality amplification feedback engine, a feature integral to our next generation of amplifier designs. LIFES is based on the technical concept of our revolutionary ODNF feedback circuitry, which achieved excellent static characteristics without feeding back any of the musical input signal to the main amplifier, yielding a natural sound quality more akin to a non-feedback system. The circuit has been redesigned from scratch through multiple simulations. By combining carefully selected components and through repeated listening tests, we have achieved the ultimate performance and sound quality, truly worthy of being adopted for LUXMAN's next-generation components. In LIFES Version 1.0, the entire circuit has been reconstructed and simplified, improving performance, whilst also successfully reducing the number of parallel elements, reducing distortion during amplification to less than half. The output stage uses a parallel push-pull configuration with bipolar transistor elements, achieving ample Class AB power of 100W+100W (8 ohm) and 150W+150W (4 ohm).
*LIFES stands for Luxman Integrated Feedback Engine System.
*ODNF stands for Only Distortion Negative Feedback.
Electronically controlled attenuator LECUA
The volume control section is crucial to both the functionality and performance of an integrated amplifier and requires dedicated signal processing. The L-505Z is equipped with LUXMAN's original, high-clarity LECUA* electronically controlled attenuator, which has been significantly downsized by adopting a solid-state (IC) circuit configuration. LECUA is an ideal level control system that minimizes variations in audio quality and enables smooth and detailed volume adjustment over 88 steps. The LR balance adjustment control also relies on LECUA's volume shift function. Despite multitasking, LECUA succeeds in minimizing deterioration of sound quality across the full range of the volume control. Intuitive operability is maintained while linked with operations from the remote control. A traditional rotary volume knob achieves that weighty, tactile response and operational feel enthusiasts will enjoy, combining convenience with pleasing operability.
*LECUA stands for Luxman Electronically Controlled Ultimate Attenuator.
Discrete buffer circuitry for preamp
The concept of a power amp driver is fundamental to the design of a preamp section, outputting an energy-rich signal is its ideal state of operation. The L-505Z is equipped with discrete buffer circuitry and high current supply capability at the output of the preamplifier stage, maintaining the fidelity of delicate musical signals whilst significantly enhancing the driving energy and performance of the power amplifier stage. The input selector switch controls a switching IC with excellent separation and low crosstalk. Proudly joining our latest Generation Z series, the L-505Z has achieved a dramatic development in musicality that far surpasses its class. In addition, responding to the reestablishment of vinyl record playback as an important contemporary source, a high-quality MM/MC compatible phono EQ amp circuit with a parallelized first stage is provided to realize supreme analog playback similar to our other high-end components.
Specificaties / Specifications
Rated output
100W + 100W (8 ohm),
150W + 150W (4 ohm)
Input sensitivity/input impedance
PHONO (MM): 2.5mV/47k ohm
PHONO (MC): 0.3mV/100 ohm
LINE: 180mV/47k ohm
BAL.LINE: 180mV/55k ohm
MAIN IN: 1V/47k ohm
Output voltage PRE OUT: 1V
Frequency response
PHONO: 20Hz to 20kHz (+/-0.5dB)
LINE: 20Hz to 100kHz (within -3dB)
Total harmonic distortion
0.009% or less (8 ohm, 1kHz)
0.09% or less (8 ohm, 20Hz to 20kHz)
S/N ratio (IHF-A)
PHONO (MM): 87dB or more
PHONO (MC): 70dB or more
LINE: 104dB or more
Volume adjustment LECUA
Amplification feedback circuit LIFES 1.0
Output configuration Bipolar parallel push-pull
Damping factor 200
Max. amount of tone control
BASS: +/-8dB at 100Hz
TREBLE: +/-8dB at 10kHz
Power supply 230V-(50Hz) / 115V-(60Hz)
Power consumption 330W, 90W (under no signal), 0.5W (at standby)
External dimensions 440(W) x 178(H) x 454(D) mm
front side knob of 20mm and rear side terminal of 27mm included in depth
Net weight 22.5kg (main unit)
Accessories Remote control (RA-17A)
Power cable
Speaker terminal
Supported Y-lug terminal
dimension Width of part a: 15mm or less
Width of part b: 8mm or more
* Connection may not be performed depending on the shape of the Y-lug terminal.