Audio-Technica AT-670T phono step-up transformer for MC cartridge

For sale is a rare vintage Audio Technica AT-670T step-up transformer. This is a very versatile step-up transformer for MC cartridges, which has 3 level of gains: 3 ohm, 20 ohm, 40 ohm which can be used for all kinds from low output, medium output and high output of MC cartridges. I have the flagship Audio Technica AT-1000T pure silver wire, and the sound quality is not a big difference compared to AT-670T. 
The original price of Audio Technica AT-670T is JPY 40,000日元, it is much more expensive than popular other step-up transformer such as Audio Technica AT650 (JPY 29,000), Denon AU-320 (JPY 16,000), Fidelity Research FRT-4 (JPY 35,800) FRT-5 (JPY 33,000).... 
Specs:
-Primary impedance 3Ω/ 20Ω/40Ω selectable
-Load resistance 47kΩ
-Step-up ratio 34dB(3Ω)/26dB(20Ω)/23dB(40Ω)
-Frequency band 10-80,000Hz
-Weight 1.8kg
-Dimensions W130×H70×D163㎜

SHOP’s POLICY: PLEASE READ CAREFULLY BEFORE BUYING.

• I will try to describe the selling items as details as I could. If you need more information (such as pictures, video ect.), feel free to send me a message before buying.
• The items are sold As-Described and cannot be returned unless they arrive in a condition different from how it was described or photographed.
• I will do the packaging carefully. Before shipping, I will test the items carefully and take pictures and video of the item in normal operation to avoid any dispute later.
• All audio gears will be shipped from Taipei-Taiwan by Chunghua Post shipping with tracking within 48 hours from payment time, except weekends (here the post office and shipping service are not opened in weekends). The tracking number will be provided to the buyer right after I sent the package. Once the item arrives the country, the buyer needs to track the item and deal with the shipping service for any further issue (missing, damages due to shipping etc)
• The buyer will be responsible for any additional tax or custom fee if it is charged.