Recent content by terranigma
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What Are You Listening To Right Now?
- terranigma
- Post #102,854
- Forum: Music
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ZiShan MD1 HIFI Desktop DAC
Apparently there is a MD2 version which includes an Amanero style usb dac. It supports 384K PCM and DSD256 on usb. https://www.aliexpress.com/item/1005002058252938.html- terranigma
- Post #18
- Forum: Dedicated Source Components
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ZiShan U1 HiFi USB DAC+AMP Thread
I replaced LPF opamp (OP275) with OPA1612. Before, sound signature was highly mid centric to my ears. Now it seems more balanced in whole spectrum. I checked via oscilloscope and there is no oscillation or any stability issue with OPA1612.- terranigma
- Post #149
- Forum: Portable Headphone Amps
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ZiShan MD1 HIFI Desktop DAC
You mean "optical and coaxial ports, are outputs"? I like Zishan for their high quality PCB design and manufacture skills for good price. I was going to purchase in moment 2xCS43198 version but information on this thread stopped me. I couldn't imagine a "desktop dac" with high quality...- terranigma
- Post #8
- Forum: Dedicated Source Components
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ZiShan MD1 HIFI Desktop DAC
Only 16/48 for USB DAC? I can't believe the waste of the potential. If this had produced as a stand alone or more capable DAC, it would be a big hit on market. What a waste..- terranigma
- Post #6
- Forum: Dedicated Source Components
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Denon AH-7200
These lambskin earpads looks good: https://www.aliexpress.com/item/4000520417437.html- terranigma
- Post #2,247
- Forum: Headphones (full-size)
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Denon AH-7200
@Maxx134 Thank you for response. I ordered 32 ohm plastic case version of drivers after seeing manufacturer graphs. 32 ohm version is slightly less spiky, then I decided to go with it. There is also 64 ohm version but it is not looking flat as 32 ohm version. I ordered mine at Aliexpress. Here...- terranigma
- Post #2,231
- Forum: Headphones (full-size)
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ZiShan U1 HiFi USB DAC+AMP Thread
I guess you would have a multimeter before attempting such modification. Then, you can track easily AK4493 analog outputs and OPA inputs/outputs. If you don't have SMD experience, I suggest you to avoid that.- terranigma
- Post #134
- Forum: Portable Headphone Amps
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Denon AH-7200
So, how did replacing drivers process gone? Can you give a little impression if you finished and listen with new drivers from China? EDIT: Answer is at his/her profile. https://www.head-fi.org/members/maxx134.161988/- terranigma
- Post #2,226
- Forum: Headphones (full-size)
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ZiShan U1 HiFi USB DAC+AMP Thread
I was wrong on this. I tried battery positive cable unsoldered and dac works with no problem when J1 in shortcut. Probably stress on usb port will be much lower now.- terranigma
- Post #121
- Forum: Portable Headphone Amps
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ZiShan U1 HiFi USB DAC+AMP Thread
According to my experience, this solves the issue of using separate usb cables for charging. It will suck all power if you connect it to a mobile device.You should keep the battery. Dac uses battery anyway.- terranigma
- Post #120
- Forum: Portable Headphone Amps
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ZiShan U1 HiFi USB DAC+AMP Thread
There is a J1 marking nearby at bottom of the pcb.- terranigma
- Post #118
- Forum: Portable Headphone Amps
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ZiShan U1 HiFi USB DAC+AMP Thread
Now, it is not waking up from sleep state in desktop dac mode. Playing with knob doesn't help. I have to plug off usb cable and wait until it turns off itself...- terranigma
- Post #116
- Forum: Portable Headphone Amps
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ZiShan U1 HiFi USB DAC+AMP Thread
Well.. I was aware of that U1 has a "Desktop Mode" with J1 which is quite true. I doesn't go off when this jumper is in shortcut. I guess this is a valid reason for desktop usage. At least for me. Anyway, I think I found the cause of my problem. The PC that I connect U1 is a quite new, AMD...- terranigma
- Post #115
- Forum: Portable Headphone Amps
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ZiShan U1 HiFi USB DAC+AMP Thread
U1 is not the only usb audio dac I use. This problem only happens with U1.- terranigma
- Post #113
- Forum: Portable Headphone Amps