Studio Balanced Line input module / zSUM-4 expander.

zLINEIN provides two balanced 1/4" (6.35mm) line inputs, including RF filter, active servo DC suppression and zero-impedance output driver with adjustable gain (20dB max) and short-circuit protection.

http://motovilo.com/modules/zlinein/

• 10 mA +12V
• 10 mA -12V
• 0 mA 5V
• 46 mm Depth

This Module is currently available.