For sale is a vintage xin reference portable amplifier out of production since the disappearance of Dr. Xin several years ago. Unit in good condition consider its age.
The 6.35 output jack have some contact problem and lose sound unless you press the plug firm with hand. Other three ports have been tested without any issue. I didt't try to fix it because I don't have the tool to open up the amp and I never use the 6.35 port. If you have the skill, it will be an easy fix.
Only paypal will be accepted and buyer will be responsible for paypal fee. No international shipping and no trade.