Summit Audio 2BA-221 Mic and Line Preamplifier - Manual (Page 4)

Front Panel
4 Summit Audio, Inc.
Front Panel
Hi Z Input (Solid State)
This input can be used to mix in a musical instrument or
other high impedance signal.
Line/Hi Z Input Gain Control
This control simultaneously adjusts the solid state gain of the
front panel Hi-Z input and the rear panel line input. Use more
of this control for a cleaner, less vacuum tube sound. Adjust
this control along with the Tube Output gain to get the proper
output level and to get the desired sound.
Signal LEDs
• Green - - Signal is present at the input.
• Amber - Proper input signal level.
• Red - - - Signal is at the threshold of Clipping.
Set the input gain controls so that the red LED only lights
occasionally. The green and amber LEDs should be on most
of the time.