GL-E23
7 band graphic equalizer / Slim size (1/2 DIN) / Subwoofer crossover control / Fader control / 2-channel LED output level indicator / 2-color changeable night illuminated / High/low level input / CD input jack / Soft start and muting

GL-E33
7 band graphic equalizer / Hi-power 25WX4 output / Slim size (1/2 DIN) / Subwoofer crossover control / Fader control / 2-channel LED output level indicator / 2-color changeable night illuminated / High/low level input / CD input jack / Soft start and muting

GL-E33B
7 band graphic equalizer / Hi-power 25WX2 output / Slim size (1/2 DIN) / Subwoofer crossover control / Balance control / 2-channel LED output level indicator / 2-color changeable night illuminated / High/low level input / CD input jack / Soft start and muting