Q450rs Four Zone Multiroom Controller Amplifier

Q450rs, controlled by RS232 and/or MR144 keypads

Updated June 2015 to add MR144 keypad control in addition to RS232 control!

The Knoll Q450rs is a multiroom amp designed to be hidden away when space is at a premium or you merely want to hide the AV system from view.  It features four 50 watt stereo power amplifiers, screw down terminals and is controlled via RS232 from whole home contollers, laptops, tablets and smart-phones and/or MR144 lcd keypads. Balanced input wall plates allow up to four sources from rooms up to 1500’ (450 m) away and are available with Bluetooth receivers. Easy to follow instructions are included in each and every kit for pain-free installation.  Best of all, Eco-System automatic shut-off saves so much money, it will pay for itself in no time!

The Knoll Q450... great sound that pays for itself!   Multiroom made easy!


  • Exercise room is better with tunes!Four-source input selection from local source or balanced input source.
  • Four-rooms zone 50 watts RMS (25 watts per channel room).
  • Four zone controlled line level outputs so larger amplifiers and subwoofers can be easily added.
  • Automatic protection circuitry.
  • Individual room input source selection, volume, bass, treble and balance adjustment.
  • Keypad and/or RS232 control. RS232 can be connected to WIFI or ethernet (IP) with optional adaptor.
  • Unique shape allows it to be hidden away in closets, cupboards and places not normally associated with electronic installations.
  • Balanced remote input wall plates allow sources to be up to 1500 feet (450 meters) away from amp. An industry first! Available in two styles, with and without a Bluetooth receiver.

    Made in Canada/Fabrique au CanadaMade in Canada

    Q450rs Specifications:

    Inputs 8 gold RCA jacks and four stereo balanced inputs
    Input impedance 50k ohms (on RCA inputs)
    Outputs Removable screw terminal, accepts 12-20 gauge wire and RCA line level
    Output power 25 watts RMS per channel (8 ohms). 50 watts per zone. Class D
    Peak output power 50 watts per channel (8 ohms)
    Ideal impedance 4 - 8 ohms
    Frequency response 20 Hz - 20 kHz +/- 1dB (1w)
    S/N ratio Over 92 dB A weighted (25 watts)
    THD distortion Less than 0.1% 20 Hz to 20 kHz
    IMD distortion Less than 0.01% 60 Hz 7 kHz 4:1 (SMPTE)
    Control System RS232 with optional wifi or ethernet adaptor
    Fan Noise No fan
    Source Selection Four stereo inputs to four stereo outputs
    Dimensions  3.5" x 2" x 13.2" (89 x 53 x 333 mm)
    Power 200 watts at 100-240 VAC 50/60 Hz
    Weight 2 lbs (1 kg) without detachable power supply


    Note: Specifications subject to change without notice. The Q450rs features RS232 control that can be easily connected to ethernet or wifi with a 3rd party adaptor. The Q450 features keypad and remote control only.


    BIB Bluetooth inwall receiverOptions:

    BIB (Balanced Input Bluetooth) wall plate to send stereo signal to Q450. Includes internal Bluetooth receiver and local 3.5mm stereo wired source input. Connects with a single home run cat5 wire up to 1500' (450m). Emitter output connector included.  BIB module shown

    BIX (Balanced Input eXtender) wall plate to send stereo signal to Q450. Up to 1500' (450m) connection via cat5e wire. 3.5mm stereo input jack. Emitter output connector included.

    DEX (Digital EXtender) allows use of MR44 keypads with longer Cat5e wires and where electro-magnetic interference prohibits normal use of keypads.

    MR144 KEYPADS Wall mount deluxe LCD keypads can can control Q450rs with or without RS232 control.

    RB8a REMOTE CONTROL for use with four source keypads such as the MR144 that controls the Q450rs.

    US-STEREO (Balanced Stereo sender) Box style (non-inwall) transmitter to send stereo signal to Q450. Gold stereo input RCA jacks. Connects with a single home run cat5 wire up to 1500' (450m). Connects directly to and is powered by Q450. Similar concept of BIX plate above.


    Q450 manual...  free iKontrol gui's...  Q450 cut-sheet...