Bache-audio matched to Hypex N-core AB-700 , motorized volume
AB audio tube line stage preamplifier design to match AB class D Power amp.
Frequency response: 20Hz–20kHz, –0.1dB; 5Hz–140kHz, –3dB. Maximum voltage gain 16 db. Total harmonic distortion: <0.03% at 1V RMS into 41k ohms 41k . Input impedance: typically 16.5k ohms. Output impedance: 200 ohms. Rated output voltage: 1V RMS. Signal/noise: >87dB, wideband, unweighted; >90dB, 22Hz–22kHz, unweighted; >97dB, A-weighted. Dimensions . 12,5″ by 12.5″ by 3″. Finish: Black-anodized. Motorized pure analog volume control. Direct manufacturing price is $ 1500