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This integrated amplifier earns its Mark II status by combining the knowledge & experience of developing refined pure Class A integrated amplifiers with state of the art technology. Free Shipping to the continental US only !
Incremental improvements accumulate to create a worthy successor that is built on heritage and introduces a new concept of value.
The L-507 uXII integrated amplifier earns its Mark II status by combining the knowledge and experience of developing refined pure Class A integrated amplifiers with state of the art technology. The L-507 uXII features the New Lecua 1000 attenuator and a discretely configured buffer circuit as well as the Version 4.0 ODNF ( Only Distortion Negative Feedback ) original feedback circuit from Luxman to achieve spatial expression, overwhelming power and clarity that is comparable to a separate amplifier. Technology has progressed but the philosophy remains the same.The L-507 uXII represents a quantum leap in integrated amplifier design and reflects the global perception of Luxman as the leader in brilliant audio expression and reproduction.
New LECUA* 1000 computerized attenuator
The New LECUA 1000 is the most important part of the pre-amplifier section and handles volume adjustment of sound signals at micro levels. A computerized attenuator, the New LECUA 1000 is an integral part of the amplifier circuit and performs in the same way as the high-end C-900u LUXMAN control amplifier. The New LECUA 1000 enables the volume to be adjusted smoothly and finely in 88 steps thereby minimizing the deterioration of the sound quality. In addition, a 3D layout has been introduced in the New LECUA 1000 allowing the substrates to be placed in three dimensions. A direct connection between the attenuator circuit and amplification circuit is made to minimize the signal transmission route and improve efficiency. What is more, this type of design is insensitive to external vibration, eliminates any change in sound quality depending on the position and durable so that it will not decline with the passage of time.
*LECUA stands for "Luxman Electronically Controlled Ultimate Attenuator".
ODNF* Version 4.0 innovative amplification feedback circuit
An integral part of the design of the L-507 uXII is LUXMAN’s original ODNF amplification feedback circuit. This features a fast-primary slew rate and an ultra-wide bandwidth that is achieved through the feedback of distortion components only from the amplification output circuit. The latest version of ODNF–Version 4.0–is used, resulting in a dramatic enhancement of accuracy in distortion detection, lower impedance and a higher S / N ratio due to a parallel first stage and Darlington connected second stage of the amplification circuit, as well as a 3-parallel first stage error detection circuit. A 3-parallel push-pull structure output stage achieves complete output linearity of 110 watt + 110 watt ( @ 8 Ω ) & 210 watt + 210 watt ( @ 4 Ω ). This type of circuit can achieve high power ratings that are comparable to a separate amplifier and has the force to drive various speaker systems to deliver high grade sound reproduction. *ODNF stands for "Only Distortion Negative Feedback".
Enhanced high capacity power supply
The highly stable power supply of the L-507 uXll consists of a large capacity EI-core type power transformer and 4 pieces of customized 10,000 μF capacitor blocks. This ensures an instantaneous, constant and stable current that will exhaustively deliver sound dynamism.
Discrete buffer circuit
The L-507 uXII features a new discrete, embedded buffer circuit mounted on the output stage of the pre-amplifier circuit that is equivalent to the type used in the high-end C-900u. This helps to protect the purity of the audio signal whilst enhancing the drive force of the power amplifier unit.
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 205 to 260 by directly connecting to the speaker terminals thus enabling a dynamic sound expression.
Original technologies prioritize sound quality
To realize a smooth, stress free signal transmission Luxman use an original Beeline construction that is a non-angled wiring pattern to allow the signal transmission to take 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 parts for high sound quality
OFC wires are used in the internal wiring of the L-507uXII to achieve a natural signal transmission due to the spiral wrap shielding on each core and non-plating process on the core wire. This model is generously equipped with many custom-made parts designed to achieve high sound quality such as Y lugs for a secure connection.
An abundance of user-friendly functions
The L-507 uXII is equipped with a high-quality phono amplifier that is compatible with MM / MC cartridges. This model offers all the functions that a high quality integrated 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.
New customized gradation cast iron Insulator
Gradation cast iron legs that are used for the Luxman 900 series separate amplifier are fitted to eliminate resonance for the L-507 uXII, taking thorough countermeasures against vibration. The solid loop-less chassis with thorough grounding adds to the structural stability & therefore sound quality.
|Rated output||110 watt + 110 watt ( 8 Ω ), 210 watt + 210 watt ( 4 Ω )|
|Input sensitivity / input impedance||Phono ( MM ): 2.5mV / 47k Ω
Phono ( MC ): 0.3mV / 100 Ω
Line: 180 mV / 47k Ω
Balanced line: 180 mV / 55k Ω
Main-in: 1.05 Volt / 47k Ω
|Output voltage||Record Out: 180 mV, Pre-out: 1 Volt|
|Frequency response||Phono: 20 Hz to 20k Hz ( ±0.5 dB )
Line: 20 Hz to 100k Hz ( within -3 dB )
|Total harmonic distortion||0.007% or less ( 8 Ω, 1k Hz )
0.08% or less ( 8 Ω, 20 Hz to 20k Hz )
|S/N ratio ( IHF-A )||Phono ( MM ): 91 dB or more
Phono ( MC ): 75 dB or more
Line: 105 dB or more
|Volume adjustment||New LECUA1000|
|Amplification circuit||ODNF 4.0|
|Output configuration||Bipolar 3-parallel push-pull|
|Maximum amount of tone control||Bass: ± 8 dB at 100 Hz
Treble: ± 8 dB at 10k Hz
|Power supply||230 Volt ~ ( 50 Hz ) / 115 Volt ~ ( 60 Hz )|
|Power consumption||350 watt
86 watt ( under no signal ), 0.4 watt ( at standby )
|External dimensions||440 mm ( W ) x 178 ( H ) x 454 ( D ) mm
front side knob of 20 mm and rear side terminal of 27 mm included in depth
|Net weight||25.0 kg ( main unit )|
|Accessories||Remote control ( RA-17A )
|Speaker terminal Supported Y-lug terminal dimension||Width of part a: 15 mm or less
Width of part b: 8 mm or more
* Connection may not be performed depending on the shape of the Y-lug terminal.
Shipping dimensions & weight: 22" x 12.5" x 24", 68.7 lb
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