POWER OUTPUT: 450W into 8 ohms (650W into 4 ohms),
1% THD. POWER BANDWIDTH: (-3dB points) 5Hz to 45kHz into 8 ohms.
FREQUENCY RESPONSE: (-3dB points at 1W) 5Hz to 45kHz into 8 ohms.
INPUT SENSITIVITY: 2.9V RMS for rated output (26dB Gain) single-ended or balanced.
INPUT IMPEDANCE: 150K ohms single-ended, 300K ohms balanced differential.
OUPUT POLARITY: Non-inverting from single-ended input.
Balanced pin 2+ (IEC-268). OUTPUT REGULATION: 0.02dB 8 ohms loaded to open circuit (Damping factor 440).
OUTPUT CURRENT: ~35 amps peak at protective shutdown.
SLEW RATE: 5 volts/microsecond (20% maximum duty cycle).
The DS450M mono amplifier adds a new level of performance and flexibility to our Definition Series of amplifiers. Providing abundant power, dynamics and control in a compact chassis, The DS450M rounds out the DS amplifier lineup.
There are several reasons to choose the DS450M over its stereo counterpart. The most important is performance-based: a monaural amp simply produces a bigger, more spacious stage by virtue of the channels being totally isolated. Also, we were able to fit a much larger , power supply in the chassis. Then there is the issue of size: the DS450M is smaller and easier to situate than the hefty DS450 stereo amplifier. In addition to its reduced height, the DS450M mono is 4.15 inches (10.5 cm) shallower, allowing it to fit in a much tighter cabinet space. And, lastly, the DS450M is perfect for multi-channel home theater systems when you need a powerful and dynamic amplifier to drive the center channel speaker. Rated power is 450 watts into 8 ohms. The DS450M has the same chassis size as the DSi200 and DS225, and continues the same design philosophy of other Definition Series amplifiers.
Our proprietary “hybrid Class D” all discrete analog switching-mosfet output technology is combined with an enormous linear analog power supply, yielding tremendous speed and power delivery in a compact, cool running chassis. This remains a distinctive Audio Research design from the ground up, forsaking the use of prepackaged “OEM” solutions common to other switching amplifiers. Each DS450M idles at only 55 watts. One major enhancement that allows a pair of DS450MÄÂÂĚĚÂs to offer even higher performance than a DS450: the energy storage of a pair of DS450M mono-blocks are 1,368 joules, an increase of 62% over the DS450. The immense Power supply will jump-start the most inefficient speakers when the music demands it.
The DS450M is a fully balanced design with both XLR balanced inputs and RCA single ended inputs. The rear panel features a dual Cardas patented speaker binding post and two 12V triggers. A 12-gauge detachable power cord with a 20A IEC connector is included. In addition to the standard all-silver version, the DS450M is also available with a black front panel, black handles, and black top cover. The DS450M builds on the foundation of its siblings, with great resolving power, pinpoint imaging, and a musicality that is immediately involving. The enormous power supply provides an authority and sense of dynamics that are breathtaking with whatever music you choose. Whether it is used in the most refined music system or the most over-the-top video system, the DS450M will provide a level of performance and value that is startling.
