And the other CH Precision product, that is getting its official launch in Munich High-End Audio Show 2017 is I1 Universal Integrated Amplifier. Its finally going into the production and first units will be ready to ship out at the end of the summer. I1 will be playing in room F204.

CH Precision’s recipe for making a Universal Integrated amplifier: Gather together an a1, C1, L1 and P1. Gently squeeze and collect the essence and soul of each product. Delicately pour the concoction into a mould in the shape of the CH unique enclosure. Lightly shake for perfect consistency. Season to taste with optional audio input cards. Serve with your favorite source and loudspeakers. Sit down and enjoy! With digital, analog, phono, USB and ethernet streaming inputs to choose from, the I1 is the heart of your compact yet exclusive audio system. While specified at 2x 100W RMS into 8Ω, its internal 1000Va power transformer provides the amplifier output stages with ample energy to accurately and effortlessly drive any loudspeakers.

Input Modularity

• factory fitted with aeS/eBU, S/PDIf, Toslink and CH Link digital inputs
• ethernet audio streaming input, optional
• USB audio class 1.0 and 2.0 streaming input, optional
• analog balanced XLR and single-ended RCa inputs, optional
• Current-mode phono input, ideal for MC cartridges, RIaa,
eRIaa, emi, Columbia, Decca and Teldec eQ curves, optional

Processing & Clocking

• Proprietary CH-HiD synchronous data oversampling
• Resolution enhancement for audio material of less than 24bits
• Ultra low jitter digitally controlled VCXo oscillators on
dedicated power supplies

Digital to Analog Conversion

• Individual multibit Delta-Sigma converter per channel • Pure class a, fully symmetrical analog design
• fully discrete, ultra low noise, high slew rate design
Volume Control
• 118dB range in 0.5dB steps, from -100dB to +18dB
• Volume preset on each input
• Phono input adjustable gain
• Post volume control, line-level analog output on balanced
XLR connectors
• Tight tolerance high-grade metal  lm resistors

Amplification Stages

• Pure class a ultra low noise driver and class AB pure follower power stage
• feedback Ratio adjustable from 0% - local feedback only - to 100% - global feedback only - in 20% steps
• Patent-pending exactBias circuitry
• Power transistors and heat sink temperature monitored
• no output relay
• argento loudspeaker binding posts

Power Supply

• Shielded 1000Va power transformer
• Hyper fast soft recovery diode bridge recti ers
• Total of 100’000uf reservoir and  ltering 4-pole capacitors


Digital Audio Inputs

aeS/eBU, S/PDIf, Toslink
PCM up to 192kHz/24bits and DoP (DSD64 over PCM)

CH Link

PCM up to 768kHz/32bits and native DSD up to 5.6448MHz/1bit

Audio Streaming (optional)

ethernet: Connects to a UPnP/DnLa compatible server (eg naS). Browse music from a tablet using the CH Control app
USB: enables bit-exact, ultra low jitter playback of high resolution audio files directly from a computer

Phono MC Input (optional): Input Impedance <100m ground="" input="" p="" virtual="">

Analog Audio Inputs (optional)

Input impedance: Balanced (XLR): 94kΩ or 600Ω - Single-ended (RCa and BnC): 47kΩ or 300Ω

Maximum input level
Balanced (XLR): 8V RMS - Single-ended (RCa and BnC): 4V RMS

Analog Audio Outputs

Line level outputs: Balanced (XLR): 4V RMS - Volume Controlled variable output

Power outputs: 2x 100W RMS/8Ω, 2x 175W RMS/4Ω

Display: 480 x 272 pixels 24bits RGB aMoLeD

Power supply

Selectable 100V, 115V or 230V aC, 47Hz to 63Hz, < 1W in Standby
Overall dimensions and weight: 440mm x 440mm x 133mm, 43kg

Control / Software update: ethernet based system control via the android CH Control app / USB port for software update