ESOTERIC has developed an original, state-of-the -art transmission format called ES-LINK4, which allows DSD and 352.8kHz/48bit PCM ultrawideband digital transmission using an HDMI cable. ES-LINK4 performs a large part of the digital signal processing on the sending side, greatly reducing the digital signal processing load on the D/A converter. In addition to ultra-wide bandwidth, we sought high sound quality through our “Pure D/A” concept, in which the D/A converter specializes in its original function of D/A conversion processing.
The D1 applies a 36-bit D/A processing algorithm that converts PCM signals to analog signals at a high resolution of 36 bits by combining several 32-bit DAC devices. The tone of the high-bit data is used for faithful analog conversion. The resolution of 32-bit encoding is 256 times higher than that of 24-bit encoding, and 36-bit encoding gives an amazing resolution level that is another 16 times higher – a total of 4,096 times higher than the resolution of 24-bit encoding. Producing even finer bit tones minimizes operational error for outstanding expression of even subtle music signals.
The clock circuit, which supplies highly accurate reference clock signals to a digital circuit, can be considered the core unit of a digital player. The clock circuit of the P1 and D1 is completely independent of other circuits, including its power source and ground, enabling pure clock signals to be supplied to the system. The voltage controlled crystal oscillator (VCXO) was developed especially for the P1 and D1 in a joint effort with Nihon Dempa Kogyo (NDK), a major manufacturer of crystal oscillators. For a high-precision custom clock device worthy of leading models, high sound quality playback is provided thanks to an extremely low level of phase noise and a crystal element that is even larger than before.

Additional information


Analog audio output
Terminal XLR terminal 1 system
RCA 1 system
Output impedance XLR 100Ω
Maximum output level
(1kHz, full-scale signal input, 10kΩ load) XLR 5.0Vrms
RCA 2.5Vrms
Frequency response
(192kHz PCM signal input) 5Hz ~ 55kHz (-3dB)
S / N ratio 113dB
Distortion 0.0007% (1kHz)
Digital audio input
ES-LINK terminal 1 system
Input signal format Linear PCM (ES-LINK4 format)
352.8KHz / 384 kHz 48 bits
DSD (ES-LINK4 format)
XLR terminal 1 system
Input level 5.0Vp-p
Input impedance 110Ω
Input signal format
DUAL connection 32 ~ 384kHz, 16bit ~ 24bit
linear PCM (DUAL AES format)
32 ~ 192 kHz 48 bits (ES-LINK3 format)
DSD (ES-LINK1, ES-LINK2 format)
Input signal format
SINGLE connection 32 ~ 192kHz, 16bit ~ 24bit
linear PCM (AES / EBU format)
DSD (ES-LINK1, ES-LINK2 format)
RCA jacks Two lines
Input level 0.5Vp-p
Input impedance 75Ω
Input signal format 32 ~ 192kHz, 16bit ~ 24bit
linear PCM (IEC60958 format)
Optical digital terminal 1 system
Input level -24.0 ~ -14.5dBm Peak
Input signal format 32 ~ 192kHz, 16bit ~ 24bit
linear PCM (IEC60958 format)
i.LINK (AUDIO) terminal (6-pin, 4-pin) S400 2 system
Input signal format 32 ~ 192kHz, 16bit ~ 24bit
linear PCM
USB terminal 1 system (B terminal)
Input signal format Linear PCM 32 ~ 384 kHz, 16-bit 32-bit ~
DSD 2.8MHz, 5.6 MHz
Clock output
Terminal BNC connector × 1
Output level TTL level equivalent (75Ω load)
Output frequency The same frequency as 44.1,88.2,176.4,48,96,192kHz, 22.5792,24.576MHz, and the input
(through output setting)
Output frequency accuracy ± 0.5ppm (factory)
Clock input
Terminal BNC terminal × 2 (WORD IN, 10MHz IN)
Input impedance CLOCK IN 75Ω
10MHz IN 50Ω
Input frequency CLOCK IN 44.1,88.2,176.4,48,96,192KHz
22.5792,24.576MHz (± 10 ppm)
10MHz IN 10MHz (± 10ppm)
Input level CLOCK IN TTL level equivalent
10MHz IN 0.5 ~ 1.0Vrms sine wave
Power 100V AC 50-60Hz
Power consumption 20W
Dimensions (W × H × D) 445mm × 132mm × 448mm (including protrusions)
Mass 24kg
Accessories Power cord × 1
HDMI cable × 1
× 4 sheets felt
Instruction Manual × 1
patronize’s card × 1


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