Pioneer SG-9500 Technics Hitachi Grundig EQT 210 Dynacord EQ 310 Onkyo EQ-240 AudioSource EQ Audio Control Kenwood GE-5020 Marantz EQ-315 X4-Tech EQ-1000 McVoice Dynacord 2215 Dynimex EQ-1200 Sansui SE-7 Pioneer SG-90 Uher EQ-300 JVC SEA-50 Pioneer GR-777 Rotel RE-1010 Kenwood KE-7090 Behringer Pioneer GR-777 Sony SEQ-310 Onkyo EQ-540 Technics ADC Sound Technics Denon DE-70 Technics DOD SR-430 QX ADC Sound Restek MTC-5 GE-909 2 x 10 Bose 901 V Yamaha EQ-1100 Yamaha EQ-550 Yamaha Q2031A Soundwave Q-900 Soundwave Q-900 McIntosh MQ-104 Dual CE 2000 Kenwood GE-87 Onkyo EQ-240 Behringer PEQ Kenwood GE-77