Xuelin H8/H9 Tuner
Jan 5, 2019 at 11:23 AM Thread Starter Post #1 of 83

Nayparm

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The Xuelin H8/H9 Tuner





































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LINKS
The Journey:

https://translate.google.co.uk/translate?hl=en&sl=auto&tl=en&u=http://www.i-hifi.com/143.html

Unpacking and module install video:
https://tieba.baidu.com/p/5933648956
 
Last edited:
Jan 5, 2019 at 11:23 AM Post #2 of 83

Nayparm

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Xuelin H8 Tuner OPA1622 Balanced Module for 2.5mm Balanced Output



Description

  • Xuelin tuner balanced module uses 2 OPA1622 to form BTL output. We have made careful design on the ground wire shielding, component layout and power supply decoupling, and the background noise in the actual test is very low.。
  • Since the earphone is ungrounded in the balanced mode, it has a wider sound field than the single-end amplifier. When matching 2.5mm balanced earbud, its wide and sweet music sense is intoxicating! Thanks to the excellent power management of OPA1622, with the balanced module, the battery life of the tuner will be doubled.
  • The OPA1622 is a two-channel, bipolar input, SoundPlus audio operational amplifier. This device under the 1 KHZ frequency with a 2.8nV/√Hz) of ultra-low noise density and -119.2 dB low THD + N, but also to the output power of 100 mw drive a 32 Ω load. The OPA1622 has extremely high AC power rejection ratio (PSRR) and common mode rejection ratio (CMRR) specifications to eliminate noise from power sources, so it's very good for portable audio applications.
  • In addition, the device has a high output drive capability of +145mA/ -- 130mA.
  • OPA1622 supports a wide power supply voltage range from ±2V to ±18V, and the power supply current of each channel is only 2.6mA. OPA1622 operational amplifiers have stable unit gain and excellent dynamic performance under a wide range of loads.
  • OPA1622 with turn off mode allows the amplifier to switch from normal operation to a standby current typically less than 5 µA.
  • This turn-off characteristic is designed to eliminate the click and crackle noise when entering or exiting the turn-off mode.
  • OPA1622 has a unique internal layout that enables minimal crosstalk and zero interaction between channels even under overdrive or overloads conditions

Unboxing video

 
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Jan 5, 2019 at 1:29 PM Post #4 of 83

gazzington

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Now this looks interesting.....
 
Jan 5, 2019 at 2:48 PM Post #10 of 83

ilmothedude

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It has quite rugged looks but I think it looks still quite charming. Seems really interesting indeed, I think it could be fun experience with different tunings. I wonder what's the price tag though, I have a feeling it could be quite pricey.
 
Jan 5, 2019 at 10:25 PM Post #13 of 83

Quadfather

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I think it is just under $700 USD
 
Jan 6, 2019 at 2:26 PM Post #15 of 83

Ivan TT

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