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A high-inertia power supply circuit that combines a large capacity EI core type power transformer (to which a vibration control feature has been newly added) and a large capacitor block (10,000uF x4) is an integral part of the L-550AXII. This large capacity power supply circuit supports the sound dynamics of the unit by enhancing stability at the core of the design.
A discrete buffer circuit that is the equivalent to those used in the top end LUXMAN C-900u separate amplifier is mounted on the output stage of the pre-amplifier circuit. This protects the purity of the audio signals whilst simultaneously enhancing the drive force for the power amplifier.
The L-550AXII is designed using proprietary technology and customized parts to optimize the sound quality of this integrated amplifier. In addition to this, the loopless chassis structure minimizes the ground impedance increase.
| Rated output |
20W + 20W (8Ω), 40W + 40W (4Ω) |
| Input sensitivity / input impedance |
PHONO (MM): 2.5mV/47kΩ
PHONO (MC): 0.3mV/100Ω
LINE: 180mV/47kΩ
BAL.LINE: 180mV/55kΩ
MAIN-IN: 450mV/47kΩ |
| Output voltage |
RECOUT: 180mV, PRE OUT: 1V |
| Frequency response |
PHONO: 20Hz to 20kHz (±0.5dB)
LINE: 20Hz to 100kHz (+0, -3.0dB) |
| Total harmonic distortion |
0.007% or less (8Ω, 1kHz)
0.02% or less (8Ω, 20Hz to 20kHz) |
| S/N ratio (IHF-A) |
PHONO (MM): 91dB or more,
PHONO (MC): 75dB or more
LINE: 105dB or more |
| Volume adjustment |
New LECUA1000 |
| Amplification circuit |
ODNF 4.0 |
| 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 |
230W
170W (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 |
24.3kg (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. |
