Περιγραφή
COS H1
Το COS H1 είναι ένα audiophile DAC με ενισχυτή ακουστικών που ενσωματώνει τον digital-to-analogue αλγόριθμο της COS Engineering με δυνατότητα up-sample στα 176.4K ή στα 192K.
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COS ALGORITHM AND DSP
COS’s proprietary algorithm with a linear-phase delay FIR can up-sample original data to 176.4K or 192K, and this massive computation is handled by a powerful 3648 MMAC/second DSP.
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BUFFER AND RE-CLOCKING
H1 stores digital data in a one-second buffer before converting to analog signals, under the coordination of a crystal oscillator with a jitter precision less than 1ps and a dedicated re-clocking circuitry.
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HEADPHONE
4 power amplifiers to accommodate 2 unbalanced headphones or 1 balanced headphone.
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POWER
H1 harnesses a selected switching mode power supply with specially designed circuitry for lower noise, and galvanic isolation between digital and analog circuitries are added to prevent audio signals from being contaminated.
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VOLUME Control
H1’s volume control is composed of a ladder of high precision resistors and an array of analog switches which are low in resistance, noise, and distortion.
SPECIFICATIONS
- Volume
DAC
Steps 192 steps by 0.5dB/step
Total Range 96dB
Accuracy Within + 0.1dB
Digital Inputs USB x1, Asynchronous 1.0/2.0;
SPDIF x 1; TosLink x 1; AES x 1
Sampling Rate
Optical / RCA / XLR: up to 192K PCM
24 bits & DSD64 (DoP)
USB 1.0 – up to 96K PCM 24 bits
USB 2.0 – up to 384K PCM 24 bits &
DSD64/DSD128 (DoP)
Digital-to-Analog Converter 24-bit DAC x 1
(up to 192Ksps, 24-bit)
Digital Filter COS Proprietary
Linear Phase Delay
Headphone
Frequency Response + 0dB, – 0.5dB (20Hz ~ 20KHz)
THD+N
< 0.001% (- 100dB)
(192Ksps, 24-bit, 20Hz ~ 20KHz,
A-weighted, 16 ohm load, 2Vrms)
Signal-to-Noise Ratio
> 110dB
(192Ksps, 24-bit, 20Hz ~ 20KHz,
A-weighted, 16 ohm load, 2Vrms)
Headphone Impedance 16 ohm and up
Full Scale Output Unbalanced : 6 Vrms
Balanced : 12 Vrms - SPECIFICATIONS
Line Out
Frequency Reponse + 0dB, – 0.5dB (20Hz ~ 20KHz)
THD+N
< 0.001% (- 100dB)
(192Ksps, 24-bit, 20Hz ~ 20KHz,
A-weighted, 2Vrms)
Signal-to-Noise Ratio
> 110dB
(192Ksps, 24-bit, 20Hz ~ 20KHz,
A-weighted, 2Vrms)
Full Scale Output 2Vrms
General
Disply 128 x 64 pixels white OLED
Weight 3 Kg
Dimension
260 mm (W) x 250 mm (D)
60 mm (H) – boots are not included
72mm (H) – boots are included
Power
100 ~ 240VAC
Normal Operation < 20W
Standby 0.5W (typical)
Awards & Reviews
Audio Art’s Best Budget Award 2017. (in Chinese)
6moons.com: “A Superb DAC/Headfi/Minimalist Preamp 3-in-1.”
HiFi Knight: “Springy, energetic, well-textured, and above all, present at low end.”
Review by Mr. Liu, General Editor of Audio Art. (content in Chinese)
Audio Art: “Outstanding sound, extraordinary value.” (content in Chinese)
HeadFonia: “Its detailed and textured high-range really makes you feel there.”
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