Καλημερα θα ηθελα την γνωμη σας για αυτα τα dac:
PCB size: 12 * 11cm
Using PCM1794 + NE5534 + LT1028, using the official version of the circuit, the unofficial original Datasheet circuit, better than the original official Datasheet circuit effect!
Power requirements: dual analog supply DC 15V, digital power supply AC single 7.5-9V.
Sense of hearing: high-frequency slim, ultra-high resolving power, low frequency is very soft and full, low frequency sense of hearing is very comfortable.
Since this board is a dual analog portion of the DC input power, so the power supply board rectifier filter needs! Users need to click on the text can be transferred back to buy! "" "Click here to convey to buy." ""
Because this board for the I2S signals straight into (without digital reception function), you need to coaxial, optical digital receiver behind clickable text transfer purchase!
Performance parameters:
Size: 255mm * 180mm * 60mm
Interface Type: USB, optical, coaxial
Output Headphone jack: 6.5mm headphone jack
Headphone drive capability: 32-600Ω THD + Nβ 0.00014%
Sampling rate: USB mode CM6631: 192K 24Bit
PCM2706: 48K 16Bit
Under SPDIF mode: 192k 24Bit
Good News OUR DAC (USB module for PCM2706, CM6631A) currently stores decode pro-test can be directly connected with the ZTE Nubia Z5smini of OTG function, support OTG other models tested Android phone! !
Sprinter designed for ultra-low-noise LDO is optimized for fast transient response lower than normal background noise linear regulator is still an order of magnitude and distance from ordinary linear regulator DAC moment
Some inexperienced Shaoyou will be more concerned about the use of what decoder chip, the number of jitter, or fever with which the capacitor (which is also the focus of publicity buyers), while ignoring the power supply is able to come to know better basis of sound (some Shaoyou have started using a battery-powered), a lot of these dac still use the old chip LM317 decades ago like to know the parameters of these chips can not meet the needs of audio, Small Business dac uses Linear Technology's low-noise LDO, so that the whole low-noise direct drop an order of magnitude, dac core power supply ripple is as low 20uV (RMS 10-100kHz), and a lower pressure drop makes the machine can easily deal with low frequency and large dynamic signal, compared to the old linear power supply, use LDO powered sound more rich emotion.
PCM1794 core, another core optional CS4398
Both core comparison:
PCM1794: name not speak, OPA2604 (optional) + NE5534 (optional) V / I conversion and all WIMA CBB capacitor filter network. Sound high resolving power, speed, very good feeling and a sense of permeability, low dive is also good.
CS4398: NE5534 (optional) all use the same WIMA CBB capacitors, transparent sound delicate, rich in detail, coherent.
SANYO ultra-low ESR Capacitor Nichicon and respond faster to ensure the power of the explosive demand for chips full of energy
WIMA audio dedicated CBB capacitor makes the sound has improved at high frequencies such as piccolo, cymbals, triangle and other instruments sound more silk slip
Q: Why are all SMD components
A: SMD components have lower parasitic inductance and capacitance, anti-interference ability, because of their small size SMD components soldered so inconvenient ordinary general DAC are used in-line devices. In addition to the large capacitors and other components, the SMD components have obvious advantages.
Q: Why not use pcm1794 parallel
A: Not all of the chips in parallel would be better, in fact, if you are using a different version of the chip as pcm1798 / 2, which we will not hesitate to choose several chips in parallel, because their output current is too small, the sound after shunt increase significantly, but different 1794, its output current is large enough, no need to be parallel to the parallel is the purpose of doing stunts.
PCB size: 12 * 11cm
Using PCM1794 + NE5534 + LT1028, using the official version of the circuit, the unofficial original Datasheet circuit, better than the original official Datasheet circuit effect!
Power requirements: dual analog supply DC 15V, digital power supply AC single 7.5-9V.
Sense of hearing: high-frequency slim, ultra-high resolving power, low frequency is very soft and full, low frequency sense of hearing is very comfortable.
Since this board is a dual analog portion of the DC input power, so the power supply board rectifier filter needs! Users need to click on the text can be transferred back to buy! "" "Click here to convey to buy." ""
Because this board for the I2S signals straight into (without digital reception function), you need to coaxial, optical digital receiver behind clickable text transfer purchase!
Performance parameters:
Size: 255mm * 180mm * 60mm
Interface Type: USB, optical, coaxial
Output Headphone jack: 6.5mm headphone jack
Headphone drive capability: 32-600Ω THD + Nβ 0.00014%
Sampling rate: USB mode CM6631: 192K 24Bit
PCM2706: 48K 16Bit
Under SPDIF mode: 192k 24Bit
Good News OUR DAC (USB module for PCM2706, CM6631A) currently stores decode pro-test can be directly connected with the ZTE Nubia Z5smini of OTG function, support OTG other models tested Android phone! !
Sprinter designed for ultra-low-noise LDO is optimized for fast transient response lower than normal background noise linear regulator is still an order of magnitude and distance from ordinary linear regulator DAC moment
Some inexperienced Shaoyou will be more concerned about the use of what decoder chip, the number of jitter, or fever with which the capacitor (which is also the focus of publicity buyers), while ignoring the power supply is able to come to know better basis of sound (some Shaoyou have started using a battery-powered), a lot of these dac still use the old chip LM317 decades ago like to know the parameters of these chips can not meet the needs of audio, Small Business dac uses Linear Technology's low-noise LDO, so that the whole low-noise direct drop an order of magnitude, dac core power supply ripple is as low 20uV (RMS 10-100kHz), and a lower pressure drop makes the machine can easily deal with low frequency and large dynamic signal, compared to the old linear power supply, use LDO powered sound more rich emotion.
PCM1794 core, another core optional CS4398
Both core comparison:
PCM1794: name not speak, OPA2604 (optional) + NE5534 (optional) V / I conversion and all WIMA CBB capacitor filter network. Sound high resolving power, speed, very good feeling and a sense of permeability, low dive is also good.
CS4398: NE5534 (optional) all use the same WIMA CBB capacitors, transparent sound delicate, rich in detail, coherent.
SANYO ultra-low ESR Capacitor Nichicon and respond faster to ensure the power of the explosive demand for chips full of energy
WIMA audio dedicated CBB capacitor makes the sound has improved at high frequencies such as piccolo, cymbals, triangle and other instruments sound more silk slip
Q: Why are all SMD components
A: SMD components have lower parasitic inductance and capacitance, anti-interference ability, because of their small size SMD components soldered so inconvenient ordinary general DAC are used in-line devices. In addition to the large capacitors and other components, the SMD components have obvious advantages.
Q: Why not use pcm1794 parallel
A: Not all of the chips in parallel would be better, in fact, if you are using a different version of the chip as pcm1798 / 2, which we will not hesitate to choose several chips in parallel, because their output current is too small, the sound after shunt increase significantly, but different 1794, its output current is large enough, no need to be parallel to the parallel is the purpose of doing stunts.
