Thank you for viewing. Product Name: API 550B (4-Band Equalizer) Purchased new in April 2025. I was using it until recently, but I have decided to sell it this time due to a planned system specification change. The list price is approximately 220,000 yen. 500 module mounting screws are included. There are no other accessories. Thank you. ■ 4-Band Equalizer Module ■ 4-band version of the most popular 550A ■ Equipped with a 7-point center frequency switching switch for each band ■ Filter function that can be controlled interactively and continuously ■ Boost/cut up to 12dB for each band ■ Range control with "Proportional Q" circuit ■ API's traditional full discrete circuit design ■ High headroom with a clipping level of 30dB #neve #api #ssl #equalizer #preamp #compressor #api500