LLI-5A Low-Level Interface 500
The LLI-5A Low-Level Interface is a device that allows to properly insert
guitar effects into line-level studio environment.
It consists of two path: the SEND path converts balanced signal into
low-level unbalanced signal suitable for guitar FX (polarity and ground lift
are switchable) and the RETURN path that does the opposite.
The operating low-level is adjustable with a knob (with additional -20dB
pad). The attenuation of the SEND path is the same as the gain of the RETURN
path, so the overall gain is unity (within 0.5dB).
Too big operating level may results in extensive distortion and too low will
inevitably increase noise. The knob in conjunction with the pad lets to set
up the proper gain staging.
The LLI can be also used "upside down" to insert line-level balanced studio
devices into a guitar FX path.