Sony - SEQ-D707 Stereo graphic equalizer

The device features a 7-band equalization system with which the entire audible frequency range can be finely tuned, from deep low tones to the highest frequencies. Each band has a adjustment range of ±12 dB, allowing subtle corrections without sacrificing the natural balance of the music.

The frequency bands are centered at 63 Hz, 160 Hz, 400 Hz, 1 kHz, 2.5 kHz, 6.3 kHz and 15 kHz. Thanks to the wide frequency response from approximately 15 Hz to 50 kHz, the low distortion and the high signal-to-noise ratio, the SEQ-D707 delivers transparent signal processing.