This is an appendix power amplifier for Digifi No. 17. You can enjoy the powerful sound even though it is small. The exterior is torn in the magazine (Mizusaki Ryo)
Maintenance information: 2023.1.23 sound output confirmed
Accessories: original box
Main specifications: frequency characteristics: 3-45,000 Hz±2dB output: 12W+12W (6Ω) W75 x H37 x D75 mm weight 71 g