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Luxman C-900U Pre Amplifier

 

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Found it cheaper? Click here. SKU: LC900U
Ex VAT: 9165.83
£10,999.00
C-900U is Luxman's flagship pre amplifier and a perfect match for the flagship M-900u power amplifier, designed to deliver supreme tonal quality.

Available - Ships within 2-3 days.

Condition: Brand new in original retail packaging

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Features

Warranty length 2 Years
Colour Black
Brand Luxman

Tech Specs

- Input: 255mV, 43/86kΩ (UB/BL)
- Unbalanced out: 1V/90Ω (max 11V)
- Balanced out: 1V/180Ω (max 22.5V)
- FR: 20-20k/ 5-120k Hz (-0.1/-3.0dB)
- THD: 0.009%/0.005% (20-20kHz, UB/BL)
- S/N ratio (IHF-A): 123/126dB (UB/BL)
- Volume adjustment New LECUA1000
- Negative feedback circuit: ODNF 4.0
- Bass/Treble tone: ±8dB @100/10k Hz
- Remote operation: RA-20 control
- Power consumption: 42W/2.2W
- Dimensions (WHD): 440 x 130 x 430mm
- Net weight: 19.7kg

Product Description

Luxman C-900u employs four independent modules in the balanced amplification circuit to enable the hot and cold components of the left and right audio signals to be handled independently suppressing unnecessary noise generation.

C-900u is an appropriate centerpiece for any modern hi-fi system due to its elegant design, user-friendly features, refined tone controls, premium tactile operation and more.

New LECUA 1000

The C-900u has been equipped with new LECUA1000 highly precise electronically controlled attenuator which has been used in LUXMAN's 80th anniversary flagship model, the C-1000f. This system is extremely resistant to external vibration and changes in sound quality over the volume control range, as well as being an extremely durable design. The LECUA circuit uses stepped fixed resistance and increasing the number of steps from 72 to 88 allows more delicate volume control adjustments, with no deterioration of sound quality from 0dB to 87dB.

Balanced Configuration

The completely balanced configuration of the C-900u features 4 of these new LECUA 1000s in parallel, achieving ideal balanced transmission. Also, the LECUA 1000 system handles left and right balance control adjustment and level adjustment in bi-amplified output mode. In addition, the new LECUA 1000 circuit has an improved three-dimensional structure and is directly connected to the amplification circuit, minimizing signal routing and improving efficiency.

ODNF circuit

Luxman’s latest negative feedback circuit, ODNF version 4.0, achieves higher performance, being quadruple paralleled in the first main amplifier stage, triple paralleled in the first error detection stage and featuring a Darlington connected second stage. Only the distorted components of an audio signal are fed back to the amplification circuit to optimize the negative feedback effect. Increased primary slew rate and ultra-wide bandwidth contribute to an extremely low level of distortion, especially in the high frequency range. An improved signal to noise ratio allows the full expression of delicate musical pieces where the amount of feedback should be minimal. Luxman paid special attention to the shape, weightiness and texture of the volume control knob, pursuing a natural, high quality feel since this control is most frequently handled by the listener.

Highly stable circuit

The high performance power supply circuit features a CI type power transformer, with equivalent capacity to that of B-1000f monaural power amplifier. Applying the philosophy of "Power Amplifier Driver", the voltage amplification stage drives the connected power amplifier stage precisely with sufficient power and is regulated by four large capacity 3,300μF blocking capacitors. The delicacy and vitality of various audio signals are transmitted to the power amplifier with the support of this remarkably stable power supply with almost no small voltage fluctuations.

Multifunctional

The multifunctional C-900u has been equipped with user-friendliness, flexibility, and expandability to fully integrate with the listening environment. The clearly visible fluorescent display shows current input source and sound volume. A zoom function on the remote control can expand this 4 times larger. This unit is equipped with a bi-amplifier output mode, in which a balanced output circuit can be used as a 2-channel unbalanced output. An external pre-amplifier input is useful for connection to an AV system and the tone controls are electronically tuned for added tonal quality.

Highly rigid chassis

The highly rigid loopless chassis used for the enclosure eliminates ground loops which can lead to deterioration in sound quality. Cast-iron isolator legs prevent resonance thanks to the characteristics of their metallic structure, the density gradient decreasing from the centre to the periphery of each leg. The legs also eliminate adverse effects caused by vibration and effects from the power transformer or the supporting surface. The blasted white exterior has no visible structural screws, adding a touch of high quality and a dignified presence.

Remote control operation

The lightweight aluminium remote control allows the user to operate a wide variety of the C-900u's functions comfortably from the listening position. Volume adjustment is a matter of course, the loudness function that automatically provides optimal tonal adjustment according to sound volume, selection of balanced phase presets that can be set for each input unit, display dimmer control (brightness switching), display zoom control and more are all remotely operable.

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