High-power laser engraving. A30's characters was made by high power laser, it solve both problems above.
Fits all kinds of headphone
Two sets of linear power supplies
A30 use WIMA capacitance for coupling.This capacitance bring better performance to A30.
A30 use TI's OPA2134, you can use your favorite OP to change it.

Technical Details

Product Details

Package Dimensions
Width : 7.95 inch
Height : 2.99 inch
Length : 10.94 inch

Shipping Weight: 4.41 pounds (View shipping rates and policies)

ASIN : B071H5Q2F8