Esoteric’s proprietary current transmission method “ES LINK Analog” attracted great attention among enthusiasts for its ability to utilise the high performance of the HCLD (High Current Line Driver) buffer circuit and its capacity to supply power at high speed.
What is ES-LINK Analog?
"ES-Link Analog" is an Esoteric's proprietary audio signal link that provides a completely new level of sound experience to the listeners - the sound is more powerful, clear, and dynamic with this new generation of audio signal link. The ES-Link Analog is a ‘current transmission’ signal link. Being different from conventional voltage line link, the impedance of cable has no negative effect for signal transmission - signal clarity will never be lost during transmission.
This is the ideal analog audio transmission as it is free from impedance of signal route, thus fully maximizes the system's potential when connected to a compatible device.
HCLD: Esoteric's Proprietary Current-Enhancing Output Buffer Circuit
The ability to produce comparatively large currents and high slew rates are two of the most important factors that enable an analog output circuit to accurately transmit the wide dynamic range of a music signal without degradation. Having the HCLD offers the ultimate performance as a line driver by adopting high-performance elements with a high current output and exceptionally fast slew rate (2,000V/μs) for excellent response speed. Two of these buffer circuits are employed per channel. By configuring them differentially to drive the XLR outputs and in parallel to drive the RCA outputs, the available instantaneous output current is maximized. By maximizing instantaneous current output, it reproduces the full dynamics of music with breathtaking realism.
The ES-LINK Analog system is built on the premise of this HCLD. Esoteric explains, "It is hard to be influenced by the signal path that is the impedance inside the cable," it is possible to forcefully transmit the signal to the pure ". The change in impedance is small, the amount of current flowing in the cable is about 50 - 100 times as much as the general balanced transmission. It seems that it could be realized just because it is an esoteric component with a fuller power supply part in the first place.
Esoteric products with ES LINK Analog
While CD/SACD Players Grandioso K1, K01Xs, K03Xs, K05Xs and K07Xs are fitted with ES LINK Output (ESL-A), only Grandioso F1 Integrated Amplifier is fitted with ES LINK Input. In order to include ES LINK Analog in the rest of the integrated amplifiers, Esoteric introduced ES LINK Optional Board (OP-ESLA 1) that can be inserted on the amplifier.
This option board OP-ESLA 1 used in the slot of the back panel as seen. It can be installed in the rear of F-03A, F-05, F-07, and one more line can be added to Grandioso F1.
Setting up ES LINK Analog
Credit: Sound Tec (http://www.sound-tec.com/audioblog/13973)
Open the protective cover for the slot at the back of the F-03A, F-05 or F-07 (F-05 in this example)
Carefully insert the OP-ESLA 1
After inserting the board tightly into the back
Fix the option board cover firmly back.
Setup is now complete.
Connect to the ESL-A output terminal of the compatible Esoteric source (K-03Xs in this example) using balanced cables.
The ES - LINK Analog output terminal on the K-03Xs side is also using conventional XLR output terminal.
Change the setting of the line output of the main unit (currently being set by XLR connection)
You can change to ESLA with a simple button operation. ※ ESLA = stands for ES-LINK Analog
With this simple switching operation, ES LINK Analog output becomes possible for K - 03 Xs
XLR x 2 (ES-Link Analog signal exclusive)
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