0:34
Faulty preamplifier fed signal from audio line tester at low gain with quiet test tone toggling on and off.
0:12
Faulty preamplifier fed signal from audio line tester at low gain with medium test tone toggling on and off.
0:27
Faulty preamplifier fed signal from audio line tester at low gain with loud test tone toggling on and off.
0:18
Faulty preamplifier fed signal from audio line tester at low gain with phantom power and electrical hum.
0:15
Faulty preamplifier fed signal from audio line tester at low gain with electrical hum.