Output Transporter Sold for Single Output 8W Primary: 3kΩ Secondary: 4/6/8/16Ω Case Detachable W105 × H105 × D90mm Approximately 3.2kg/piece (case outer dimension) with retaining screws It seems that it is an unused item from the state of the terminals! (Yosuke Kojima)
Accessories: retaining screws