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| It was the ultimate attenuator that was mounted on C-10 in 1996 resulting in defying the common knowledge regarding the conventional volume adjustment mechanism. To upgrade such system and its quality for C-1000f, we have developed "LECUA1000" that allows to control sound volume for every channel independently without degradation by directly connecting our original system "LECUA" that is a computerized fixed-resistance-switching-type attenuator to the amplification circuit. Change of the layout from 2D to 3D for amplifier boards to achieve the shortest and most efficient route eliminates the necessity of regarding the attenuator and amplifier as different blocks. Accordingly, we can offer you an ultimate solution. | ![]() 3D construction plan drawing of LECUA1000 |

| Input sensitivity / Input impedance | unbalance / 334mV / 50kΩ, balance / 334mV / 100kΩ |
|---|---|
| Output / Output impedance | unbalance / rating 1V / 510Ω Maximum 4.1V, balance / rating 1V / 1020Ω Maximum 8.2V, |
| Total harmonic distortion rate | unbalance / 0.001% (20Hz-20kHz), balance / 0.0007% (20Hz-20kHz), |
| Frequency response | 5Hz-20kHz (+0, -0.1dB), 1Hz-118kHz (+0, -3.0dB) |
| S/N ratio | unbalance / 124dB (1kHz(IHF-A) ), balance / 127dB (1kHz(IHF-A) ) |
| Power consumption | 28W (Electrical Appliance and Material Safety Law), 2.3W (at standby) |
| Outside dimensions | 440 (W) x 117 (H) x 429 (D) mm |
| Weight | 23.0kg |