Influenced by the flexibility and supreme sonic performance of the C-600f, the C-700u control amplifier is equipped with version 4.0 of the ODNF circuit which significantly improves the distortion characteristics and overall sound quality. Fitted with the LEUCA1000 attenuator users have an accurate control. Total harmonic distortion: unbalanced / 0.009% (20Hz-20kHz), balanced / 0.007% (20Hz-20kHz), Frequency response: 5Hz-20kHz (+0, -0.1dB), 5Hz-110kHz (+0, -3.0dB), S/N ratio: unbalance / 122dB (IHF-A), balance / 125dB (IHF-A), Outside dimensions: 440 (W) × 130 (H) × 430 (D) mm, Weight: 17.6kg