LIHO

2HP stereo line-in & headphone out Eurorack module

LIHO is a compact headphone amplifier and stereo line-in interface in 2HP. It is skiff-friendly and the perfect interface module for compact systems. The module has a tiny footprint and is built to fit in almost any rack.

The line-in amplifier has a gain of up to 30dB, which allows to amplify even quiet sources to Eurorack level. The 3.5mm stereo interface is aimed at connecting compact gear without having to use an adapter, such as mini/micro synths, grooveboxes, pocket operators, field recorders or smartphones.

The headphone amplifier has low distortion and is compatible with all standard headphones. It is also suitable as a high quality stereo line level output - with line input impedance, the THD is below 0.0005%.

The combination of line-in and headphone/line-out interface in such a small size shines its brightest in space constrained systems. It allows to instantly turn any small case into an external effect or add an additional input/output pair without wasting any space. Even the power header helps - it can be connected either way to make cable management and installation at the edge of a case easier.

Line In

• DC coupled
  
• 3.5mm stereo input
• Dual mono left/right output
• Amplification up to +30dB

Headphone/Line Out

• AC coupled
  
• Dual mono left/right input
• Right channel is normalized to left for mono operation
• 3.5mm stereo/headphone output
• THD <0.0005% in line operation

Controls

• Durable full-size Alpha stereo potentiometers
  
• Baxandall-like double feedback topology to increase the usable volume range

Technical specifications

• Width:  ​2HP
• Height: ​ 3U
• Depth: ​ 25mm
• Power: ​ 15mA (+12V), 15mA (-12V)
• Power header can be plugged-in either way