• EQ901B-V/VI Replacement Upgrade for BOSE 901 V/VI Equalizers


    EQ901B-V/VI - Replacement Upgrade for BOSE 901® Series V/VI Equalizers

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    The EQ901B-V/VI is a direct replacement for existing BOSE 901® Series V/VI equalizers, providing improved clarity, imaging and range. The EQ901B-V/VI features dual equalization curves, normal and enhanced, that accommodate your Series V/VI depending on personal preference.

    The EQ901B-V/VI installs in your tape monitor loop, pre-out / main-in loop, or between your preamp and power amp. Switchable input levels between 0.9 Vrms and 2.0 Vrms accommodates use with most preamplifiers, amplifiers or receivers.

    Tape Monitor Loop Installation

    Pre / Power Amplifier Installation


    • Precision Engineered BOSE 901 Series V/VI Equalization

    • Dual equalization curves, normal and enhanced

    • Ultra low noise and proven reliability

    • Based on the miniDSP 2x4 digital signal processor

    Tone Controls

    • The EQ901B-V/VI has been calibrated to provide a neutral and natural sound without tone control adjustments

    • There are no external tone controls on the EQ901B-V/VI; your audio/video receiver or amplifier tone controls are used to make fine adjustments

    • The EQ901B-V/VI includes a 48dB/Octave subsonic (rumble) 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

    What’s Included

    • EQ901B-V/VI Equalizer

    • Precision frequency equalization curves optimized for BOSE 901 Series V/VI

    • Regulated U.S. power supply

    • User Guide

    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, high quality, shielded, high fidelity


    • 30-day 100% satisfaction guarantee

    • U.S. technical support through Deer Creek Audio

    • Installation guide and phone support

    • Deer Creek Audio is an authorized miniDSP dealer

    Warranty Terms

    This product is warranted to be free from defects in materials and workmanship for a period of one year from invoice. Warranty does not cover failure of the product due to incorrect connection or installation, improper or undocumented use, unauthorized servicing, modification or alteration of the unit in any way, or any usage outside of that recommended in the product manual. The customer provides return shipping to Deer Creek Audio. Deer Creek Audio is an authorized miniDSP dealer.


    Orders received by 2 PM MT are shipped the same business day. U.S. domestic orders ship FedEx 2-Day Express for free. Canadian orders ship FedEx for $24.95, other international orders ship FedEx for $39.95 (global carrier may vary).

    User Links
    EQ901B V/VI User Guide

    Connecting Your EQ901 to an Audio Video Receiver (AVR)

    EQ901 Features Comparison Guide

    Podcasts, in collaboration with WNY Media Works

    Deer Creek Audio EQ901: How It All Began

    Deer Creek Audio EQ901: All Models

    Deer Creek Audio EQ901: The Hook Up