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CH Precision
	CH Precision is a Swiss company dedicated to the design, manufacturing and commercialization of highest quality audio products under the CH brand. The company is located close to Lausanne, on the shores of Lake Geneva in Switzerland Fully designed and manufactured in Switzerland, CH products stand for outstanding build quality and audio performance. Whereas product design is fully done in-house, manufacturing is handled by local subcontractors. Casing is realized by a specialized company active for the luxury watch industry and located midst in the 'Watch Valley' in the Swiss Jura mountains. PCB and units assembly is handled by an ISO certified partner in the Swiss Alps specialized in manufacturing of technological equipment for high reliability applications. By subcontracting manufacturing to experienced, specialized partners, the CH team can fully concentrate on its core competences, namely the hardware, software and mechanical design of innovative high-end audio products. The team has an unrivaled experience in the high-end audio industry covering electronic board design, MCU and DSP software as well as FPGA programming. This is confirmed by the specialized press recognition and numerous awards received by the audio products designed by the team during its previous activities. CH Precision also closely collaborates with Technology Institutes and Universities to keep up-to-date with the latest research and technological developments. The company strongly believes that correctly applied technology, confirmed by outstanding lab measurements, can definitely progress the art of audio reproduction. CH products provide a unique blend of ultimate audio performance, timeless design and build quality. Based on the latest technologies and open for future upgrades, they make every audiophile's heart beat faster. Last but not least, the company takes highest pride in correlating superb audio performance with excellent measured performance and reliability.

CH Precision is a Swiss company dedicated to the design, manufacturing and commercialization of highest quality audio products under the CH brand. The company is located close to Lausanne, on the shores of Lake Geneva in Switzerland

Fully designed and manufactured in Switzerland, CH products stand for outstanding build quality and audio performance. Whereas product design is fully done in-house, manufacturing is handled by local subcontractors. Casing is realized by a specialized company active for the luxury watch industry and located midst in the 'Watch Valley' in the Swiss Jura mountains. PCB and units assembly is handled by an ISO certified partner in the Swiss Alps specialized in manufacturing of technological equipment for high reliability applications.

By subcontracting manufacturing to experienced, specialized partners, the CH team can fully concentrate on its core competences, namely the hardware, software and mechanical design of innovative high-end audio products. The team has an unrivaled experience in the high-end audio industry covering electronic board design, MCU and DSP software as well as FPGA programming. This is confirmed by the specialized press recognition and numerous awards received by the audio products designed by the team during its previous activities. CH Precision also closely collaborates with Technology Institutes and Universities to keep up-to-date with the latest research and technological developments. The company strongly believes that correctly applied technology, confirmed by outstanding lab measurements, can definitely progress the art of audio reproduction.

CH products provide a unique blend of ultimate audio performance, timeless design and build quality. Based on the latest technologies and open for future upgrades, they make every audiophile's heart beat faster. Last but not least, the company takes highest pride in correlating superb audio performance with excellent measured performance and reliability.

C1 Reference Preamp

Designed for the true music lover, the C1's apparent simplicity hides highly sophisticated technological solutions with the single goal of recreating the full musical experience. This emotion can only be achieved when both level and time information are properly reconstructed from the digital data. And this is what the C1 is all about...

The C1 is based on a fully modular, future-proof architecture. Inputs boards (up to 3) include standard digital inputs complemented by the proprietary CH-Link interface. The CH-Link interface allows for synchronized transfer of High Definition audio content and control over a single connection and is the optimal link between the C1 and the matching D1.

Standard digital inputs accept S/PDIF, TOSLINK and AES-EBU signals up to 24bits/192kHz whereas the CH-Link interface supports up to 32bits/768kHz and native DSD. Audio data on CH-Link is cyphered when protected content is transmitted. The converter stage is a linearized R2R stage operating at 705.6/768kHz with four converters in parallel per channel fed by a fully programmable 4.8GFLOPS DPS engine implementing the proprietary CH-HiD processing for up-sampling, DSD to PCM conversion and resolution enhancement. Each converter is individually factory calibrated and this fully automated process can be repeated to maintain optimal operation over time. The digital to analog converter boards are full dual mono with one board per channel. Analog outputs include single-ended 75 Ohm RCA, balanced XLR and 50 Ohm darT BNC connectors.

The analog stage is a full discrete design optimized for ultra-low noise and transient response. Digital volume control and optional analog inputs enable the use of the C1 as a full featured preamplifier. Extreme care has also been given to the timing of the audio conversion. The clocking section of the C1 is based on two ultra low jitter digitally controlled VCXOs. It supports word-clock slave synchronization over the CH Link interface. The C1 also supports an optional synchronization board to be used with external clock generators/slaves and CH sources.

A reference grade linear power supply (with <1W power consumption in Standby), sophisticated mechanical chassis design and full USB based firmware update also contribute the C1's uniqueness... for now and for any future format!