901 Series EQ Conversion Equalizer for Bose 901 Series I–VI – New Home Upgrade
If you ownBose 901 speakers, you already know their magic depends on the equalizer. Bose 901 Active Equalizer (Series I). Bose 901 Series II Equalizer –. Bose 901 Active Equalizer (Series II). Bose 901 Series III Equalizer –.