Fits the following units:

• Pre Box S
• Pre Box DS
• Head Box S
• Head Box S USB 
• Dock Box S Fi
• DAC Box DS (until S/N# D9268)
• Phono Box
• Phono Box USB
• Phono Box USB V
• Phono Box S
• Phono Box DS
• Phono Box DS+
• Speed Box S
• Pre Box RS (until S/N# D16272)