This is a step-up transformer with Tamura's popular transformer TKS-83 casing. The current specification is 40 ohms. The internal wiring is reconnected to a 3 ohm specification. You can see the exterior, writing, teplar, dullness, and feeling of use (Kobayashi Hitoshi)
Maintenance information: 2026.6.14 sound output confirmed
Accessories: none
Main specifications: Input 4 KΩ: 3/40 Ω W170 × H70 × D120 mm 1.3 kg (actual measurement)