M450 Stereo/Mono Audio Power Amplifier by Bogen Communications

Model #M450

Regular Price: $2,685.76

Special Price $1,410.02

Product Overview

***OPEN BOX SPECIAL. Short Time Only. Bogen Factory Resealed, NOT REFURBISHED. This is a NEW AMP. 2 Year Warranty from date of purchase.***

  • mono power levels: 900W for 70V speaker systems

  • 3 stereo power levels: 450W per channel @ 4 ohms

  • modes of operation to choose from - Stereo, Dual Mono, or 70V Mono

  • Low noise, low distortion, and high slew rate

  • Flexible modular input capability (2 module capacity)

  • Professional, dual-channel (balanced or unbalanced), high-impedance input module with gain selection included

  • 3 selectable low-frequency, roll-off choices

  • 2x1 mixer function when in mono modes

  • Insert connections for outboard equipment (in mono modes)

  • Post- and Pre-EQ Output Feeds (summed mono out in stereo mode)

  • DC, overload, short circuit, and thermal protection circuits

  • Clip limiting circuits for speaker protection

  • Power-saving Sleep Mode for intermittent use applications

  • Status, Signal, and Clip/Limit indicators

  • Back-Slope AC voltage stabilization for dependable performance over varying AC line voltages

  • Heavy-gauge steel chassis with cast aluminum front panel

  • Recessed volume control knobs with snap-on protective cover

  • Mounts in 2 rack spaces (3-1/2") directly stackable without need for extra space above or below

  • 2 independent, continuously variable, cooling fans for dependable and quiet operation

  • Easily removable front fan grilles with filters

  • Stable into 2-ohm loads

  • Listed to UL Standard 60065 for US and Canada


The M450 Stereo/Mono Audio Power Amplifier by Bogen Communications is a powerful audio amplifier system that delivers Flexibility, Power, and Reliability.

Flexibility – 3 modes of operation: Stereo, 70V Mono, or Dual Mono; and 2 modular input bays for a variety of prioritized input types.
Power – up to 450W/ch

Reliability – Massive power toroid and heat sinks; heavy 14-gauge chassis; patented Back-Slope™ AC voltage stabilization; Clip limiters, DC voltage, over-current, and thermal protection circuits.


S/N Ratio (20K BW): 106 dB ref. 8 ohms, F.P

Class of Operation: H

Product Weight: 44 lb.

Power Output

  • 70V Mono: 900W @ 5.5 ohms 
  • 4-ohm: 450W per channel*
  • 8-ohm: 300W per channel*

Input Sensitivity

  • At Backplane Connector or using Standard Input Module (incl.): 1.010V for 450W @ 4 ohms
    (Module has Gain of 1)


  • Power: 15A line cord
  • Input: Dependent on modules installed (stereo, high-impedance balanced input module w/screw terminals included) /RCA (Mono/70V mode, unbalanced)
  • Output: 5-pin "touch-proof" Barrier Strip, RCA Pre- & Post-EQ Output

Power Bandwidth: 20 Hz to 40 kHz .5% THD

THD @ 1 kHz rated power: less than .02%

Load Impedance: 4-8 ohms, 70V

Minimum Load Impedance (Stereo): 3.2 ohms

Frequency Response @ 1 watt: 20 Hz to 20 kHz +/- 0.25 dB

Output Regulation

  • 1 kHz direct: 0.5 dB @ 8 ohms
  • 1 kHz bridged: 1.5 dB @ 70V

Inputs (Plug-in modules): Electronically balanced, high-impedance module standard, other modular input types available

AC Input Voltage Range: 95 to 130VAC, 60 Hz

Physical Dimensions: (W x H x D) 17" X 3-1/2" x 18-1/2" (not including brackets)

Protection: RF, DC, Low-frequency, Thermal, Low-Impedance, Circuit-Breaker, Short Circuit

Special Features: Sleep Mode, Back-Slope regulation, Stereo, Dual Mono, 70V Mono Operation, Toroidal Power Transformer

Approvals: Listed to UL Standard 60065 for U.S. and Canada

Maximum AC Current: 15A

Indicators: Status (On/Protect/Sleep), Clip/Limit, Signal

Cooling: Forced Air Variable Speed Fan

Thermal Emissions: 1537 BTU/hr

* Both channels driven at nominal line voltage 120V AC, 60 Hz.
** Requires 20A, NEMA 5-20R Type Receptacle.

Additional Information

Promotional Message No
SKU M450
Mount Type No

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