CH PRECISION L1

The CH Precision L1 line preamplifier is designed to deliver exceptionally high sonic performance, going far beyond simple source selection and volume control. Every detail is meticulously crafted to ensure absolute transparency, ultra-low noise, and total stability, making the musical signal completely pure and free from any alteration. Its design is fully discrete, balanced, and complementary, featuring ultra-short signal paths and precisely selected components. The power supply is rigorously regulated and filtered, while volume control is handled through a sophisticated 20-bit R-2R network with fine adjustments in 0.5 dB steps.

The L1 physically separates the left and right channel circuits to eliminate any interference, and continuously monitors DC offset throughout the entire audio path, ensuring an extremely quiet and disturbance-free operation. Although modular in nature, the L1 is delivered fully equipped and ready to use but can be expanded with a second chassis for true monaural operation or paired with one or two external X1 power supplies to further enhance power purity.

Control is entirely digital and intuitive via the CH-Control app, which allows input labeling, gain adjustment, and the setting of specific filters for each channel. Connections include balanced XLR inputs, single-ended RCA and BNC inputs, and preamplified outputs in various formats, ensuring maximum compatibility with any high-end audio system. Thanks to these features, the L1 stands as a reference line preamplifier, capable of elevating music with unparalleled clarity and naturalness, becoming the invisible heart of any exceptional hi-fi setup.

Technical specifications:

• Maximum analog input and output levels: 16V RMS balanced; 8V RMS single-ended
• Input impedance: 94kΩ or 600Ω balanced; 47kΩ or 300Ω single-ended
• Output impedance: BNC connectors 50Ω; RCA connectors 75Ω; XLR connectors 2 x 30Ω
• Frequency response: DC – 1MHz
• Total harmonic distortion + noise (3V RMS output, 22kHz bandwidth): < 0.001% at 1kHz, unity gain
• Signal-to-noise ratio (maximum output): > 136dB, unity gain
• Dimensions: 440 x 440 x 133 mm (W x D x H)
• Weight: 20 kg