EQ901B-III/IV - Replacement Upgrade for BOSE 901 III/IV Equalizer | Deer Creek Audio miniDSP Digital Signal Processing Experts
![Finally joined the “Goodwill Find” club. Bose 901 IV for $20. Now I just need the EQ. Grills are in backseat. : r/audiophile Finally joined the “Goodwill Find” club. Bose 901 IV for $20. Now I just need the EQ. Grills are in backseat. : r/audiophile](https://preview.redd.it/9mr95b1f7qe41.jpg?width=640&crop=smart&auto=webp&s=87295b6cdcbdd13b20bb32ad6d1312c201591e51)
Finally joined the “Goodwill Find” club. Bose 901 IV for $20. Now I just need the EQ. Grills are in backseat. : r/audiophile
![Vintage Bose 901 Series IV Speakers with Stands and Equalizer - $400 (Near Steubenville OH) | Electronics For Sale | Cleveland, OH | Shoppok Vintage Bose 901 Series IV Speakers with Stands and Equalizer - $400 (Near Steubenville OH) | Electronics For Sale | Cleveland, OH | Shoppok](https://storage.bhs.cloud.ovh.net/v1/AUTH_e7d15450bedd40b9b599e075527df3cb/cleveland/fVintage_Bose_901_Series_IV_Speakers_with_5c3819b4380e3.jpg)