Luxman B-100 CENTENNIAL MONO POWER AMPLIFIER - Each
AUTHORIZED LUXMAN PREMIER DEALER
Following the L-100 Centennial Class A integrated amplifier, the D-100 Centennial CD player and the P-100 Centennial headphone amplifier, LUXMAN continues to celebrate its 100th anniversary with the B-100 CENTENNIAL mono power amplifier.
The new flagship of the Japanese brand’s amplifiers, it is the first monoblock model of its kind since the B-1000f, launched in 2005 to mark the 80th anniversary. At its heart beats the latest version of the LIFES 1.1 amplification circuit. Derived from the LIFES circuit first introduced in the M-10X in 2021, this latest iteration has been further optimized to reduce distortion even further and improve overall performance.
The B-100 Centennial adopts a new ‘4×4’ output configuration, consisting of four triple-stage Darlington push-pull modules in a quad-parallel arrangement for each channel. This configuration delivers 25 W in pure Class A at 8 Ω and 125 W in Class AB. At 4 Ω, the power doubles to 250 W and quadruples at 2 Ω to 500 W. Capable of reaching up to 1,000 W peak power at 1 Ω, it aims for total linearity and absolute control over the speakers, reinforced by a damping factor exceeding 1,000.
The main reason for the doubling of power output each time the impedance is halved is the power supply, which relies on a massive, custom-built, high-efficiency 1,250 VA EI-type transformer, featuring flat copper windings to reduce losses and improve coupling. This is combined with 16 filter capacitors of 10,000 μF each (totaling 160,000 μF), which provide a considerable energy reserve. The ‘peel-coat’ circuits are gold-plated without varnish and combined with specific inductors and numerous relays.
Key Specifications
| Item | Specification |
|---|---|
| Rated output | 125W (8Ω) / 250W (4Ω) / 1,000W (1Ω, bridged) |
| Frequency response | 20Hz–20kHz (+0 / -0.1dB), 1Hz–180kHz (+0 / -3.0dB) |
| Total harmonic distortion (THD) | 0.0014% (1kHz / 8Ω) |
| S/N ratio | 119dB |
| Input impedance (unbalanced) | 51kΩ |
| Input impedance (balanced) | 55kΩ |
| Power consumption | 180W (rated) / 440W (maximum) / 1.0W (standby) |
| Dimensions | 440W × 243H × 651D mm (including feet) |
| Weight | 59.5kg |
Three-Stage Power Supply Design
The B-100 CENTENNIAL features a three-stage power supply architecture:
- PowerVault RAW: Large-capacity capacitor bank for instantaneous current delivery, handling abrupt musical dynamics
- Stabilized high-voltage rail: Clean, stable power for the input stage with minimal noise
- Dual low-noise control rails: Independent power supply for precision servo circuits and control sections
This design prevents power supply fluctuations from entering the signal path even during high-output operation.
The amplifier is also capable of delivering 1,000W into 1Ω when bridged, making it suitable for driving large loudspeakers or unusual load conditions.
