Wednesday, May 4, 2011

Audio Research DS450M

$10000 pr

Solid state mono power amplifier.

  • Proprietary “hybrid Class D” all discrete analog switching-MOSFET output technology
  • Linear analog power supply
  • Fully balanced design with both XLR balanced inputs and RCA single ended inputs.
  • Same chassis size as the DSi200 and DS225
  • In addition to the standard all-silver version, the DS450M is also available with a black front panel, black handles, and black top cover.
  • Dual Cardas patented speaker binding post and two 12V triggers.
  • 12-gauge detachable power cord with a 20A IEC connector


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). 
RISE TIME: 8.0 microseconds.
HUM & NOISE: <300 microvolts RMS (105dB below rated output IHF A-weighted).
POWER SUPPLY CAPACITANCE: 176,800 uF total 684 Joules. 
POWER REQUIREMENTS: 100-125VAC 60Hz (200-250VAC 50Hz) 550 watts at rated output (450W into8 ohms), 700 watts at 650W into 4 ohms, 700 watts maximum, 55 watts idle. 
DIMENSIONS: 19" (48 cm) W (standard rack panel) x 5 1⁄4” (13.3 cm) H x 14 1⁄4” (36.2 cm) D (front back panel). Optional handles extend 1 1⁄2” (3.3 cm) forward of the 3⁄8” thick front panel. Output connectors extend 1 1⁄2” behind rear panel. 
WEIGHT: 37.2 lbs. (16.9 kg) Net; 43.3 lbs. (19.7 kg) Shipping.