Luxman B-1000f
Flagship monoblock power amplifiers developed over fifteen years, released following board approval in 2003 and first exported in 2007.
Overview
The Luxman B-1000f is a pair of flagship monoblock power amplifiers designed by Luxman. Development took fifteen years, and the company's board approved completion in 2003. The amplifiers were first exported outside Japan in the third quarter of 2007. They deliver massive power into low impedances, and critics praised their neutrality, bass performance, and transparency.
Specifications
| Rated Output | 250W (8Ω), 500W (4Ω), 1,000W (2Ω), 2,000W (1Ω) |
| Input Sensitivity/Impedance | 1V / 51kΩ (RCA), 67kΩ (XLR) |
| Output Impedance | 210Ω, maximum 4.5V (RCA) |
| Harmonic Distortion | 0.0007% (1kHz) |
| Frequency Response | DC – 150kHz (+0, -3 dB) |
| Nominal Voltage Gain | 32 dB @ 8Ω |
| Signal-to-Noise Ratio | 118dB (1kHz, IHF-A, XLR) |
| Power Consumption | 439W (rated), 232W (idle), 0.7W (standby) |
| Dimensions | 16.9" (W) x 11.6" (H) x 23.3" (D) |
| Weight | 141 lbs (unit), 240 lbs (shipping, each) |
Design
The B-1000f uses ODNF (Only Distortion Negative Feedback) version 2.3. The circuit is built for ultra-wide bandwidth, ultra-high slew rate, and ultra-low distortion, and it needs no phase compensation in the signal path. The chassis absorbs vibration well. The layout isolates the power transformer, electrolytic capacitors, and output stage from each other to prevent interference. The proprietary 55-pound EI transformer is wound with 2mm flat OFC copper wire, and its output leads connect directly to a solid copper bus bar. The amplifier has RJ11 connectors for 12V DC remote triggering and oversized five-way speaker binding posts with locking mechanisms.
Context
Development of the B-1000f ran fifteen years, ending with Luxman board approval in 2003. The amplifiers were first exported outside Japan in Q3 2007.
Market
The Luxman B-1000f won the Sound Gold Prize (2005), Stereo Sound Grand Prix (2005), and SoundStage Reviewer's Choice (2008). One listing noted a price of £17,362 in 2013, though the original context is unclear.
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