SOLD: Xin SuperDual
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Wkendrvr

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Sold: Xin Technologies SuperDual Amp
2.3 x 1.6 x 0.75-inches (5.7 x 4.1 x 1.9 cm)
1.5 ounces
AD8620 op-amp chip
Cascode current source class-A biasing
Separate output buffers for optimal channel separation and imaging
3.5mm input and 3.5mm output jacks
Digital volume control (64 steps)
Runs on one 9-volt NiMH battery
15+ hours playback per charge
Ouptut up to 110mA per channel!
XinFeed (crossfeed) with bypass switch
Bass-Boost with bypass switch
Output impedance switch (0-75 ohm, can be used to make Etymotic ER4P equal to the ER4S model)
Comes with AC adapter

This is one of the last SuperDuals before Xin went production, so it has no silk screening. It is also all handmade by Xin himself! (It is the color of the grey one in the picture below)

 
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ICU

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Someone's going to be one happy audiophile when *he* crosses over to the happy hunting grounds.
 
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