• EQ901PS Equalizer - Powered Sub Crossover for BOSE 901 - Select your Series I/II or III/IV or V/VI


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    The EQ901PS (Powered Subwoofer) is a direct replacement for existing BOSE 901 ® Series I/II, III/IV or V/VI equalizers for users with pre/power amplifiers or pre-in/pre-out ports who wish to add a powered subwoofer to their system. The EQ901PS enhances your 901’s performance adding deep tight bass with improved overall musical articulation.  The EQ901PS installs in between your pre/power amplifiers, pre-in/pre-out ports of your receiver, or integrated amplifier while providing two additional subwoofer outputs.

    Features Summary:

    • Precision Engineered BOSE 901 ® Series I/II, III/IV & V/VI equalization   (option selectable)
    • Active subwoofer crossover with single or dual monaural sub outputs
    • Calibrated to provide a natural sound with seamless subwoofer integration
    • Switchable input levels to accommodate use with most preamplifiers, amplifiers, and integrated amplifiers
    • Ultra low noise & proven reliability
    • The EQ901PS is based on the miniDSP 2x4 digital signal processor

    What’s Included:

    • EQ901PS Equalizer
    • Precision frequency equalization optimized for either BOSE 901 ® Series I/II, III/IV or V/VI (option selectable)
    • Precision active crossover for single or dual active subwoofers
    • Regulated US power supply- see option for global supply
    • User Guide

    System Bass & Tone Controls:

    • Subwoofer level is fine tuned with your active subwoofer level and filter controls
    • There are no external tone controls on the EQ901PS, your audio/video pre-amplifier or amplifier tone controls are used to make fine tone adjustments
    • The EQ901PS includes a 48 dB/oct subsonic filter


    • Distortion <1% THD at maximum input
    • Dynamic range: un-weighted >98dB
    • Analog Devices ADAU1701 digital signal processor (DSP) Engine
    • Dimensions: 26h x 107w x 94d mm


    • One year full replacement warranty
    • 30 day 100% satisfaction guarantee
    • Deer Creek Audio is an authorized miniDSP dealer

    Recommended accessories:

    • Global precision regulated AC/DC power supply for :Europe, U.K., Australia and others, plug types: B, C, G, I
    • RCA Cables - Two (2) Pairs, Excellent quality, flexibility, Shielded, High Fidelity


    * Orders received by 11 AM MT are shipped same business day.   US Domestic orders ship free - FedEx 2 day, Canadian FedEx is $19.95, Global FedEx is $34.95