This is the L-type TH-9708, which is the highest peak step-up transformer along with cotters. The detailed, glossy, and deep sound is the true essence of analog playback. There are kummies. Serial 890048 (Kanai Hidetsugu)
Maintenance information: 2024.8.3 sound output confirmed
Accessories: none
Main specifications: primary impedance: LOW 3 ohms size W16.5 x H12 x D10 cm dead weight 2.75 kg