{"product_id":"audio-gd-cd-7-he-high-end-cd-transport","title":"Audio-GD CD-7 HE - High-End CD Transport","description":"\u003cp\u003e\u003cstrong\u003eDelivery time approximately 2–3 weeks\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eCD-7 HE\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eRedbook CD drive (transport)\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIntegrated regenerative power supply\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUses a Philips CDM-4 swing-arm laser\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIntegrated HDMI-IIS, AES, BNC, and RCA coaxial outputs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIntegrated 10 MHz input for external master clocks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eNew features in the CD-7 HE\u003c\/h2\u003e\n\u003col start=\"1\"\u003e\n\u003cli\u003e\n\u003cp\u003eThe integrated regenerative power supply delivers exceptionally clean power and ensures detailed, transparent reproduction with full musicality.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEquipped with an on-board FPGA that provides a high-performance hardware S\/PDIF demodulator—instead of conventional standard ICs such as the DIR9001, WM8805, or the AK411X series.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUses an Accsilicon AS318B 45.1584 MHz femtosecond oscillator. The 11.289 MHz clock signal is generated via the FPGA, achieving an approximately 12 dB improvement in phase noise compared with the oscillator signal alone.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eClock and FIFO technologies for the output data ensure precise synchronization between data and clock signals for maximum jitter immunity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFour HDMI-I²S output formats provide maximum compatibility with most commercially available DACs worldwide. The format is switched internally in the FPGA without mechanical switches, preventing signal and clock distortion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAn integrated ultra-high-speed broadband isolator separates the digital signal processing from the output buffer stages to prevent the transmission of digital noise to the external DAC.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThe external clock input also features an integrated ultra-high-speed broadband isolator that prevents ground-current noise from the external clock system from impairing the purity of the reference clock.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFor uncompromisingly clean power, the device features a total of 17 regulated power supplies:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eA:\u003c\/b\u003e 1 pure Class A power supply for the HDMI, AES, and coaxial output buffers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eB:\u003c\/b\u003e 2 pure Class A power supplies for the regenerative power supply circuit.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eC:\u003c\/b\u003e 4 DC servo power supplies for the HF stage, DSP, FPGA, and other digital signal-processing circuits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eD:\u003c\/b\u003e 10 high-speed linear power supplies for the remaining circuit components.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eThe regenerative power supply\u003c\/h2\u003e\n\u003cblockquote\u003e\n\u003cp\u003eAudio is life, and the power supply is the water: Pure water creates wonderful life—clean power produces outstanding sound.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003eThe regenerative power supply acts like an independent power generator integrated into the device. It blocks virtually all interference from the mains and supplies the CD-7 HE with exceptionally clean power for a natural, analog sound.\u003c\/p\u003e\n\u003cp\u003eThe mains AC is converted into direct current (DC) via an input transformer and powers the sine-wave generator and driver stages through Class A power supplies. The parallel-connected Class A power supply features very high input impedance (to prevent feedback into the signal) as well as low output impedance with high speed and linearity.\u003c\/p\u003e\n\u003cp\u003eA fully balanced sine-wave generator produces an extremely low-distortion 50 Hz wave. Through balanced amplifiers and robust output stages, it drives two output transformers that deliver separate, exceptionally clean AC power to the digital processors and output buffer stages.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDevelopment features of the regenerative Audio-gd power supply:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eAnalog wave generation:\u003c\/b\u003e Measurements with the Audio Precision SYS-2722 demonstrate that purely analog sine-wave generation has significantly lower distortion than digital generation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eAnalog driver stages:\u003c\/b\u003e Although digital driver stages offer higher efficiency, fully analog driver stages sound far more musical and natural.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003e50 Hz frequency:\u003c\/b\u003e A 400 Hz wave would offer higher efficiency; however, 50 Hz is well outside the most sensitive range of human hearing and is crucial to achieving an analog sound character.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHDMI-I²S output\u003c\/h2\u003e\n\u003cp\u003eThe CD-7 HE's HDMI-I²S output supports four configurable formats (the enclosure cover must be removed for adjustment). Customers can inform us of their DAC's HDMI-I²S input format when ordering so that we can preconfigure it before shipping. Without specific instructions, the unit is shipped configured to Format 1 by default.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFormat 1\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0561\/0304\/3261\/files\/HDMI1.jpg?v=1787058782\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFormat 2\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0561\/0304\/3261\/files\/HDMI2.jpg?v=1787058781\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFormat 3\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0561\/0304\/3261\/files\/HDMI3.jpg?v=1787058781\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFormat 4\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0561\/0304\/3261\/files\/HDMI4.jpg?v=1787058781\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eTechnical details\u003c\/h2\u003e\n\u003ctable width=\"1500\" id=\"table1894\" class=\"auto-style2\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003eBNC and RCA output level\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e\n\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"fontstyle0\"\u003e\u003cspan style=\"font-size: medium;\"\u003e0.5 Vp-p\/75 ohms\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e　\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003e\n\u003cbr\u003eHDMI-IIS output level\u003cbr\u003e　\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e\u003cspan class=\"fontstyle0\"\u003e\u003cspan style=\"font-size: medium;\"\u003e3.3 Vp-p\/110 ohms\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003e\n\u003cbr\u003eAES output level\u003cbr\u003e　\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e\u003cspan class=\"fontstyle0\"\u003e\u003cspan style=\"font-size: medium;\"\u003e3.3 Vp-p\/110 ohms\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003e\n\u003cbr\u003eExternal clock input level\u003cbr\u003e　\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e\u003cspan class=\"fontstyle0\"\u003e\u003cspan style=\"font-size: medium;\"\u003e0.5-2.5 Vp-p\/50 ohms\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003e\n\u003cbr\u003eSampling frequency\u003cbr\u003e　\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e44.1 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003e\u003cspan style=\"font-family: Arial;\"\u003ePower requirement\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e Version 1: 100-120V  AC 50\/60 Hz\u003cbr\u003e\u003cbr\u003eVersion 2:  220-240V  AC 50\/60 Hz\u003cbr\u003e　\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003e\u003cspan style=\"font-family: Arial;\"\u003ePower consumption\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e25W\u003cbr\u003e　\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003e\n\u003cbr\u003eNet weight\u003cbr\u003e　\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e14KG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003e\u003cspan style=\"font-family: Arial;\"\u003ePackage weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003cspan lang=\"EN-US\"\u003eApproximately\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e17KG\u003cbr\u003e　\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003eDimensions\u003cbr\u003e　\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eW430 X L400 X H135 (MM, with feet, full aluminum )\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eAccessories\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003eAC power cord     X1\u003cbr\u003eCombo remote controller X1\u003cbr\u003e　\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eImportant note before purchase\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003col start=\"1\"\u003e\n\u003cli\u003e\n\u003cp\u003eThe CD-7 HE is equipped with a CDM-4 laser with fixed laser power calibrated to the optimal level. The laser power is deliberately not increased to force the reading of problematic media, as higher power causes signal distortion, reduces sound quality, and shortens the laser's service life.\u003c\/p\u003e\n\u003cp\u003eTherefore, heavily soiled or scratched CDs may still be readable by players with newer-generation laser units (such as CDM12 or DVD lasers) or devices with artificially increased laser power, while the CD-7 HE may refuse to play them.\u003c\/p\u003e\n\u003cp\u003eThe unit reads clean, minimally scratched original CDs with absolute reliability.\u003c\/p\u003e\n\u003cp\u003eThis development approach ensures an exceptionally long service life for the CDM-4 laser.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThe CD-7 HE is a pure CD transport without an integrated D\/A converter (DAC). For audio playback, it must be connected to an external DAC.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Audio Essence","offers":[{"title":"Silver","offer_id":56853615837570,"sku":null,"price":2699.0,"currency_code":"CHF","in_stock":true},{"title":"Black","offer_id":56853615870338,"sku":null,"price":2699.0,"currency_code":"CHF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/0304\/3261\/files\/Audio-GDCD-7HE.jpg?v=1787059847","url":"https:\/\/audioessence.ch\/en\/products\/audio-gd-cd-7he-high-end-cd-transport","provider":"Audio Essence","version":"1.0","type":"link"}