Linsoul E1DA Cosmos ADC Grade B ES9822PRO Chip Analog to Digital Converter, with Aluminum Shell, OPA1612, USB-C Powered
【ES9822Pro Chip】
Cosmos ADC uses the ES9822Pro chip released by ESS Technology. Incwhich is positioned as "The Sabre ES9822 PRO is the world’s highest performance 32-bit analog-to-digital (A/D) converter targeted for professional audio applications such as recording systems, mixer consoles and digital audio workstations (DAW), test equipment, instruments". The THD+N ESS chip overtakes competitors for 7-10db or so
【USB-C Powered Analog to Digital Converter】
Cosmos ADC is a plain USB-C powered Analog to Digital Converter to PCM 32bits/44.1-384kHz with extremely low distortions and noise, which the first time in history makes the ADC suitable for the THD+N measurement at levels lower than audio analyzers.It can be used as the finest vinyl ripping ADC or a studio recording interface. It’s a breakthrough in audio measurement with affordable and top-precise performance
【Grade A/B/C, MONO/Stereo Mode Available for Your Needs】
Regarding the grading, each Cosmos ADC unit is individually calibrated for the minimal distortions at level -0.5dbfs 1kHz with the typical THD <0.00003% or to say shorter .3-.2PPM.Grades are only about the noise, and each unit has a grade mark on the left side of the front panel. In most cases, SNR/Dynamic_Range in the MONO mode is within 127+/-1db(A) it is grade-B Cosmos ADC. Less than 126db(A) means grade-C, from 128db(A) and better grade-A, 129db(A) and better grade-0(very rare grade). The MONO mode improves the SNR/DR for 3db. MONO/STEREO modes are switchable by the UAC2 volume commands
【Multiple Functional Inputs】
Cosmos ADC has 2 FDA XLR inputs 1.7-10Vrms, and a tiny 2.5mm 43Vrms AUX input as a gift to DIYers who like to play with power amps(do not plug/unplug that jack when the amp is On). All inputs are AC coupled(-2V to +12v DC allowed) Fully Differential aka balanced and could be used with balanced/unbalanced outputs in any combinations i.e. doesn&x27;t matter +IN to GND or -IN to GND or IN+ to the OUT+ or to OUT-, the same for IN- etc.
【Compatible Software&Apps For Further Modification】
We have a free E1DA Cosmos Tweak Windows appto letyou control the distortions harmonics level, interpolation filters, and ADC&x27;s integrator settings. The harmonics control is similar to our Tweak9038 Android APP for DACs but without a volume dependency. All ADC units are calibrated before sellingso it saves money from buying apps
Specifications
Device purpose/marketing target: ultra-low THD+N Analog to PCM Digital Converter for audio measurement,E1DA 9038S/D DACs users, DIYers, audio tech bloggers-reviewers
Materials:Sandblasted/black anodized aluminum/laser mark/ES9822Pro/OPA1612Susumu, Viking resistors, Murata, Samsung C0G caps, Taiwanese connectors/switches
Dimensions: PCBA 90x50x29mm, 104x61x39mm
Weight: PCBA 34g, 157g
Power:USB-C +5V rail, <250mA current
Input:USB bridge Comtrue CT7601CR custom FW, XLR L/R (FDA) up to 10Vrms, AUX 2.5mm jack up to 43Vrms
Output: USB-C, PCM up to 32b/384kHz
Latency: 5mS@192k ASIO4ALL REW
measured as a physical delay/2 from ADC input to the 9038D output
Input ranges/impedance: 1.7Vrms 640Ω
2.7Vrms 1kΩ
3.5Vrms 1.3kΩ
4.5Vrms 1.66kΩ
6.7Vrms 2.46kΩ
7.6Vrms 2.82kΩ
8.5Vrms 3.12kΩ
10Vrms 3.48kΩ
43Vrms 13.6kΩ
Note: unbalanced impedance about 30% less.
Frequency response: 5-180+kHz @ 32b/384kHz, depends on the interpolation filter setting
SNR=DR@MONO: 127+/-1db(A) grade-B, 128-129db(A) grade-A, <126db(A) grade-C >125db(A)
STEREO mode has 3db worse SNR/DR. Measured at 32/48 AP2700
THD+N@1kHz@-.5dbFS SR48kHz BW 20-20kHz .00007%, SINAD >123db typical for grade-A, 122db grade-B
THD@1kHz@-.5dbFS BW 22-22kHz <.00003%(.3-.2PPM) typical for 32b/48kHz all harmonics level -135-145db
Crosstalk: < -140db@1kHz
SNR=DR@MONO:
128-129db(A) grade-A,
127+/-1db(A) grade-B,
<126db(A) grade-C
LED Light Indicator Instructions
The rear panel contains a USB-C socket and the orange status LED to indicate the sample rate by LED&x27;s flashing frequency(48k 1 blink per 2S, 96k 1 blink per 1S, 192k 2 blinks per second etc).LEDs on the front panel work as a "Signal" indication - green if the STEREO mode and the input > -30dbfs, or blue in the MONO mode. A "Clipping" red-LEDs indicate that the input level reached 0dbfs. i.e. 80s style