Luxman L-505uXII Integrated Amplifier

$9,999.00 inc GST

The attraction of the Luxman L-505uXII Integrated Amplifier is its new level of refinement, approaching perfection as an authentically desirable product

The L-505uXII is the eagerly awaited Mark II version of the popular L-505uX that has been at the forefront of pre-amplifier design since it’s launch in 2011.

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SKU: L-505uXII Categories: , , , GTIN: 7610321320010 EAN: 7610321320010 Brand: GTIN / EAN: 7610321320010
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  • chronic back pain
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High Quality HiFi!

After a brief period of chronic back pain from carrying this tank into my rack, I was instantly struck by awe. I realized where the kilo's went, all 22 of them beautifully assembled with aircraft precision. The big VU meters, the rock solid milled alloy volume and selector knobs. everything you touched, turned and clicked instilled a confidence that these mechanical controls would still be functioning long after your grandchildren had inherited your priced possession. This was my first impression, a piece of HiFi equipment that people brought 40 years ago, when you brought appliances based on the expectation they would last a lifetime. As hoped the sound quality matched it's engineering quality. The sound was energetic, rhythmic and detailed. excellent separation and articulation of the treble, symbols seem to ring out into the horizon well after the band has moved into the next phrase. The bass was weighty and dense, fast and authoritative. This kept the toes tapping and the head bobbing as the amplifier grooved it's way through the tracks as if it was a member of the band itself. The amp did take while to burn in, the initial listening's sounding a little high gain and overly sensitive but after 1 week it all settled like well rested rib eye steak. It matched best to my Klipsch Fortes, the high quality horn tweeters being able to keep up with the huge amount of detailed information being delivered by the Luxman. On the Wharfedale Jades, while some areas sounded amazing, the tweeters seemed to struggle with the highest vocal sections. I think those speakers just finally met their match. The Luxman is a neutral, revealing amp that would be great for comparing source equipment. Function wise the remote is simple and all the required selectors are available at your finger tips. It's also solid and high quality, although I prefer them a little slimmer than was was provided. This amp is pure analog, no DAC or network streaming, no bluetooth, no ARC, nothing. Nothing but the required inputs and outputs for traditional sources. This amp is for true HiFi enthusiasts who already have quality separate source equipment. Balanced inputs are a favorite of mine as I get to use my shiny red Audioquest XLR interconnects, and they sound great! The phono stage was the best I've heard so far from an integrated, but unfortunately I've been spoiled by the PS Audio Nuwave Phono Converter and it only got a short listen before being swapped back for O'l Faithful. Overall the Luxman is a powerful and very transparent amplifier. There was no coloration or identifiable sound signatures. Feed this amp high quality sources, connect it to high quality speakers and you will be rewarded with a fine dining musical experience. Enjoy.

New Zealand New Zealand


Luxman L-505uXII Integrated Amplifier

The Luxman L-505uXII Integrated Amplifier features a new discrete buffer circuit in the output stage of the pre-amplifier circuit that is equivalent to the type used in our high-end C-900u separate amplifier.

The pre-amp output stage is able to drive the signal with enhanced current supply capacity. The clarity of the audio signal is protected, whilst at the same time, the driving force fed through to the power amplifier stage is significantly increased.

The power and reproduction capability of the L-505uXII achieves overwhelming scale sensitivity and a sharpness on start-up that cannot be achieved by conventional pre-amplifier

Incorporating an abundance of proprietary technologies, such as Luxman’s Version 4.0 ODNF (Only Distortion Negative Feedback), as well as LECUA (Luxman Electronically Controlled Ultimate Attenuator), this product is a truly multifunctional integrated amplifier. As Luxman’s latest high-end model, the L-505uXII continues the evolution of the L-505 series, which has attracted many fans of audio quality and earned a great reputation.

As an amplifier which exudes sophistication and authenticity beyond its class, the L-505uXII represents the latest in a long line of exemplary models.


Download Spec Sheet >>



ODNF* Version 4.0 – Innovative amplification feedback circuit

An integral part of the design of the L-505uXII is LUXMAN’s original ODNF amplification feedback circuit featuring a high-speed primary slew rate, an ultra-wide bandwidth and a low level of distortion that is achieved by feeding back only the distorted components of the audio from the amplifier’s output circuit.

The L-505uXII is equipped with the latest Version 4.0 ODNF circuit, resulting in a dramatically enhanced accuracy in distortion detection due to the paralleled first stage and Darlington equipped second stage amplification circuit, as well as a paralleled first stage error detection circuit.

With it’s lower impedance and higher S/N ratio, the L-505uXII realizes accurate reproduction of even the gentlest audio signals and achieves a full range of dynamic musical expression. The output stage, with it’s parallel push-pull structure, has secured sufficient power at 100W+100W(8Ω) and 150W+150W(4Ω).

Highly accurate LECUA computerized attenuator

LECUA (Luxman Electronically Controlled Ultimate Attenuator) is at the heart of the pre-amplifier section and the sound volume adjustment function of the L-505uXII.

The L-505uXII design also uses a solid state(IC) type circuit to achieve a significant reduction in size. LECUA provides an ideal level control mechanism that allows smooth and fine volume adjustment over 88 steps, thereby minimizing any deterioration of the audio signal.

In addition, left and right balance adjustment is integrated into the attenuator’s control functions. The multifunctional ability of LECUA ensures accuracy over the full range of the volume control, whilst suppressing any deterioration of sound quality.

The volume may also be adjusted with the remote control, but when adjusting the volume manually, the tactile design and gradual motion of the control itself enables intuitive adjustment of the attenuation level.

High stability power supply

The power supply of the L-505uXII consists of an EI core type power transformer, highly regulated, with four large capacity 10,000μF blocking capacitors creating a highly stable power supply. This ensures an instantaneous, constant and stable current supply.

Low impedance transmission

Large-capacity, low resistance speaker relays are connected in parallel to enable lossless transmission for the powerful driving force that is generated by the large-scale output circuit. In addition, the damping factor has been improved from 180 to 210 by lowering the impedance of the wiring pattern.

Original technologies prioritize sound quality

To realize a smooth, stress free signal transmission LUXMAN use an original Beeline construction that features a non-angled wiring pattern to allow smooth signal transmission along the shortest optimal route. This is one of many examples of a LUXMAN original design that makes sound quality a priority.

A wide variety of custom-made components for high sound quality components for high sound quality

OFC cabling is used in the internal wiring of the L-505uXII, achieving natural signal transmission due to the spirally wrapped shielding on each non-plated wire core. A high quality input selector IC is employed to improve separation and eliminate crosstalk. This model is generously equipped with many custom-made parts designed to achieve high sound quality such as in-line layout speaker terminals for easier speaker cable connection.

An abundance of user-friendly functions

The L-505uXII is equipped with a high quality phono pre-amplifier that is compatible with MM and MC cartridges supporting full analog reproduction. This model offers all the functions that a high quality pre-main amplifier should offer such as bass/treble tone control, L/R balance adjustment using LECUA, pre/power separation function, volume function and headphone output to name a few.



Rated output 100W + 100W (8Ω),
150W + 150W (4Ω)
Input sensitivity/input impedance PHONO (MM): 2.5mV/47kΩ
PHONO (MC): 0.3mV/100Ω
LINE: 180mV/47kΩ
BAL.LINE: 180mV/55kΩ
MAIN-IN: 1V/47kΩ
Output voltage REC OUT: 180mV, PRE-OUT: 1V
Frequency response PHONO: 20Hz to 20kHz (within -3dB)
LINE: 20Hz to 100kHz (within -3dB)
Total harmonic distortion 0.009% or less (8Ω, 1kHz)
0.09% or less (8Ω, 20Hz to 20kHz)
S/N ratio (IHF-A) PHONO (MM): 91dB or more
PHONO (MC): 75dB or more
LINE: 104dB or more
Volume adjustment LECUA
Amplification circuit ODNF 4.0
Output configuration Bipolar parallel push-pull
Damping factor 210
Max. amount of tone control BASS: ±8dB at 100Hz
TREBLE: ±8dB at 10kHz
Power supply 230V~(50Hz) / 115V~(60Hz)
Power consumption 270W
85W (under no signal), 0.4W (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.

Additional information

Weight 22.5 kg
Dimensions 45.4 × 44 × 17.8 cm


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