Yaqin SD-CD2 Tube Buffer

For sale, we have a Yaqin SD-CD2 Tube buffer. The unit is in perfect working order, and includes two NOS RCA 5654 Matched tubes. The tubes were matched and tested on our Amplitrex AT-1000 tube tester. We ran our CD player through the Yaqin on our bench for a couple of days, and really enjoyed it. There are a few blemishes on the unit, but overall it is in very good to excellent condition. There are no scratches or dents on the unit. Included with the buffer are the two tubes, in their original boxes, and a power cord. 

We don't have the original box for this unit, but we take packaging and shipping seriously. We spare no expense and use heavy duty boxes, as well as several inches of polyethylene foam on all sides of the unit. Finally,  water activated, fiber reinforced tape is used on all seams. 

Specifications :
Tubes: 6J1 × 2 (Cathode followers,it can be replaced with EF95, 6AK5, and 5654)
Output Jacks: Two channels with two gold plated RCA jacks
Input Sensitivity: 0.55V (As output is 0.5V)
Input Jacks: Two channels with two gold plated RCA jacks
Distortion of Harmonic Wave: ≤0.15%(1KHz input)
Signal to Noise Ratio: >75 dB
Crosstalk Separation: >75 dB
Frequency Response: 5Hz ~ 50KHz (-1.0dB)
Supply Voltage: AC115V, 60Hz
Dimension: 18cm(W) x 12cm(D) x 13cm(H)
Shipping Weight: 2.1kg (4.6lb)