Dun Mei AV-21 tube buffer stages with two tubes inside in beautiful gold finish (like Conrad Johnson). This unit retailed for $200, is in excellent condition, and is said to be a clone of the highly acclaimed Musical Fidelity X10D tube buffer stage. It runs dead quiet, the volume control is smooth, and when you turn it off, it stays on for a good 10-15 seconds.
The unit goes between a preamp or a receiver and the cd player to add a little tube warmth to CDs. Ideally if your preamp or receiver has an External Processor Loop or a Tape Monitor, you would insert it in there with 2 sets of RCAs, one for input and one for output.
Kind of takes the bite, the hardness, out of bad sounding CDs. it enhances what is already a great sounding system.
Voltage: 110V - Ignore the 220v rating on back
Pro packaged, insured and includes tracking. No PO Boxes. No accessories. Thank you.