EQ901B-III/IV - Replacement Upgrade for BOSE 901® Series III/IV Equalizers


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The EQ901 B III/IV equalizer is a direct replacement for existing BOSE 901® Series III/IV equalizers, providing improved clarity, imaging and range. The EQ901 B III/IV includes dual equalization curves to accommodate your listening environment. The EQ901 B III/IV 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




Features

  • Precision engineered BOSE 901 Series equalization

  • Dual equalization curves - tone modes

    • Standard - enhanced bass depth and treble range

    • Small room - slightly reduced bass and enhanced mid-range

  • Ultra low noise and proven reliability

  • Based on the miniDSP 2x4 digital signal processor


Tone Controls


The EQ901 B has been calibrated to provide a natural sound that can be varied with two tone modes selectable from the output connector

  • Standard - enhanced bass depth and treble range

  • Small room - slightly reduced bass and enhanced mid-range


Specifications


  • Distortion < 0.01% THD

  • Dynamic range > 98dB

  • Analog Devices ADAU1701 digital signal processor

  • Engine Dimensions:  26h x 107w x 94d mm


What’s Included


  • EQ901 B Equalizer

  • Precision frequency equalization curves designed for BOSE 901 Series

  • 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


Support


  • 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.