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I1Universal Integrated Amplifier
www.ch-precision.com
CH Precision Sàrl | Z.I. Le Trési 6D | 1028 Préverenges | Switzerland | [email protected] | T + 41 (0)21 701 9040
www.ch-precision.com
“A TRUE SWISS ARMY KNIFE IN HIGH-FIDELITY.”RAFE ARNOTT, AUDIOSTREAM
“EIN AUFLÖSUNGSVERMÖGEN, WELCHES DERART HOCH IST, DASS DAS KLANGBILD IN FOLGE WEICHER, „ANALOGER“ UND ECHTER WIRKT ALS SONST.”RALPH WERNER, FAIRAUDIO
“THIS IS ONE OF THE BEST INTEGRATED AMPLIFIERS (AND I STILL HATE THAT TERM FOR THIS DESIGN) YOU CAN BUY.”ALAN SIRCOM, HI-FI+
“L’INTÉGRÉ I1 EST UN CONCENTRÉ DE L’EXPERTISE DE CH PRECISION EN TERMES D’ÉLECTRONIQUE ANALOGIQUE ET NUMÉRIQUE.”DOMINIQUE MAFRAND, HAUTE FIDÉLITÉ
Where Swiss Precision Meets Exquisite Refinement
“I KNOW OF NOTHING WITH A COMPARABLE COMBINATION OF PEDIGREE, VERSATILITY, FOOTPRINT, EXPANDABILITY, UPGRADABILITY, VALUE AND WORLD-CLASS SONICS.”ALAN TAFFEL, THE ABSOLUTE SOUND
www.ch-precision.com
I1Universal Integrated AmplifierCH 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 boards. Serve with your favorite sources 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.
OPTIONAL ACCESSORIES
Digital Input HD BoardFour stereo digital inputs - CH Link HD, AES/EBU, S/PDIF and Toslink - are provided on a single board. Up to two Digital Input Boards per I1. One board is factory fitted.
Phono Input BoardCurrent-sensing phono stereo inputs, dedicated to low-impedance MC cartridges.Two RCA inputs available.
Ethernet Audio Input BoardEnables bit-exact, ultra low jitter playback of high resolution files over an Ethernet network.Stream music from UPnP/DNLA networks, Tidal, Qobuz and internet radios.Browse music by using the CH Control app or other UPnP-compatible iOS or Android app.
USB Audio Input BoardEnables bit-exact, ultra low jitter playback of high resolution audio files directly from a computer or a music server.
Clock Synchronization BoardMaster/Slave clock synchronization board. Allows the I1 to become the system clock master or to sync from an external clock generator such as the T1.
Input Modularity• Factory fitted with AES/EBU, S/PDIF, Toslink and CH Link
HD digital inputs• Analog balanced XLR and single-ended RCA inputs• Current-sensing phono input, ideal for MC cartridges, RIAA,
eRIAA, Emi, Columbia, Decca and Teldec EQ curves, optional• Ethernet audio input, optional• USB class 1.0 and 2.0 audio input, optional
Processing & Clocking• Proprietary CH-PETER synchronous data upsampling• Resolution enhancement for audio material of less than
24bits• Ultra low jitter digitally controlled VCXO oscillators
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• Hybrid digital and analog volume control• Tight tolerance high-grade metal film resistors• 120dB range in 0.5dB steps• Volume pre-trimming on analog input• Phono input adjustable gain• Post volume control stereo balanced line-level analog outputs
Amplification Stage• 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 6 steps• 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 rectifiers• Total of 100’000uF ultra low ESR reservoir and filtering
capacitors
www.ch-precision.com
CH Precision Sàrl | Z.I. Le Trési 6D | 1028 Préverenges | Switzerland | [email protected] | T + 41 (0)21 701 9040
UNIT SPECIFICATIONS
Digital Audio InputsAES/EBU, S/PDIF, Toslink PCM up to 192kHz/24bits and DoP (DSD64 over PCM)CH Link HD PCM up to 768kHz/32bits and native DSD up to 5.6448MHz/1bitAnalog Audio InputsInput impedance Balanced (XLR): 94kΩ or 600Ω - Single-ended (RCA): 47kΩ or 300ΩMaximum input level Balanced (XLR): 8V RMS - Single-ended (RCA): 4V RMSPhono MC current-sensing Input (optional)Input Impedance <100mΩ, virtual ground input - Single-ended (RCA)Digital Audio Streaming (optional)Ethernet PCM up to 384kHz & DSD256. WAV, AIFF, FLAC, ALAC, AAC, MP3, DSF, DFF file format supportedUSB PCM up to 384kHz & DSD128 (DoP mode only) Analog Audio OutputsLine level outputs Balanced (XLR): 4V RMS - Volume Controlled stereo outputsPower outputs 2x 100W RMS/8Ω, 2x 175W RMS/4ΩGeneralDisplay 480 x 272 pixels 24bits RGB AMOLEDPower supply Selectable 100V, 115V or 230V AC, 47Hz to 63Hz, < 1W in StandbyOverall dimensions and weight 440mm x 440mm x 133mm, 33kg Control / Software update Ethernet based system control via the Android CH Control app / USB port for software update
Specifications subject to change without notice. Illustrations are informative only.
