Luxman C-700u

Luxman C-700u

Discontinued we suggest the Audio Research LS28

Luxman’s new C-700u preamp benefits from the same uncompromising construction and attention to detail as the their reference pre-amplifier.

At its heart lies Luxman’s fourth-generation ODNF (Only Distortion Negative Feedback) amp circuit, which restricts feedback to distortion components only, thus greatly enhancing signal-to-noise performance. This is directly coupled to the LECUA 1000 attenuator circuit, trickled down from the flagship C-900u preamp, allowing an extremely fine degree of volume control and left/right balance adjustment whilst maintaining sound quality at the highest level.

Exceptional signal purity doesn’t have to mean stripped-to-the-bone facilities – not when they are implemented with Luxman’s no-compromise approach.

The C 700u includes precision bass and treble tone adjustment (extremely useful given the variability of today’s music formats), a ‘loudness’ control for low-level listening, a ‘line straight’ button that bypasses the tone controls, and phase selection for the balanced inputs.

The FL display can even be zoomed in stages via the remote, ensuring key information remains readable no matter how far you are away from the preamp.

In terms of connectivity, the C 700u offers seven line-level inputs (five single-ended RCA and two balanced XLR), plus four line-level outputs (two single-ended and two balanced). Also present are monitor input and record output RCA terminals, an external preamp input for integration with an AV system, and two remote output terminals for integrated system control.

Accessories supplied

RA-22 remote control
Power Cable
2 x AAA batteries
Safety Cautions
Owner’s Manual

SPECIFICATIONS C 700u

Input Sensitivity
Line 250 mV / 1 V output, 1 kHz, load 50 kΩ

BAL LINE 250 mV / 1 V output, 1 kHz, load 100 kΩ

Maximum Output
LINE 11 V / distortion 0.1 %, 1 kHz, load 50 kΩ
BAL LINE 11.5 V / distortion 0.1 %, 1 kHz, load 100 kΩ

Input impedance
LINE 46 kΩ / 1 kHz

BAL LINE 67 kΩ / 1 kHz

Unselected LINE 33 kΩ / 1 kHz

Unselected BAL LINE 67 kΩ / 1 kHz

Output impedance
LINE 90 Ω / 1 kHz

BAL LINE 600 Ω / 1 kHz

S/N ratio
LINE 125 dB (IHF-A) / distortion 0.1 %,1kHz, load 50 kΩ

BAL LINE 122 dB (IHF-A) / distortion 0.1 %,1kHz, load 100 kΩ (ATT. −87dB)

LINE → BAL LINE 122 dB (IHF-A) / distortion 0.1 %,1kHz, load 100 kΩ

BAL LINE → LINE 125 dB (IHF-A) / distortion 0.1 %,1kHz, load 50 kΩ (ATT. −87dB)

Tone control
Bass ±8 dB at 100 Hz

Treble ±8 dB at 10 kHz

Loudness Control
100 Hz +7 dB

10 kHz +5 dB

Power consumption 28 W / 2 W (at standby)

Power supply 230 V ~ (50 Hz)

Max. external dimensions 440 (W) × 130 (H) × 430 (D) mm

Weight 14.6 kg (main unit only)

The ideal partner to the equally impressive Luxman M700U