Boulder 500AE power amplifier Specifications

Sidebar 1: Specifications

Description: Solid-state stereo power amplifier. Power output (continuous): 150W into 8 ohms (21.8dBW), 250W into 4 ohms (21dBW), 325W into 2 ohms (19.1dBW), 500W mono into 8 ohms (27dBW). THD at rated power: 0.0015% up to 2kHz, 0.005% at 20kHz. Slew rate: 35V/µs stereo, 70V/µs mono. Voltage gain: 26dB stereo, 32dB mono (no load specified). Frequency response: 20Hz–20kHz, +0.0, –0.04dB; –3dB at 0.015Hz and 200kHz. Peak current: 50A. Damping factor: 800 below 1kHz (equivalent to an output impedance of 0.01 ohms). Input impedance: 33k ohms unbalanced, 12k ohms balanced.
Dimensions: 17" W by 7" H by 15.5" D. Weight: 51 lbs.
Price: $3499 (1991), $3999 (1992); no longer available (2008). Approximate number of dealers: 15.
Manufacturer: Boulder Amplifiers, Inc., 3235 Prairie Avenue, Boulder, CO 80301. Tel: (303) 449-8220. Fax: (303) 449-2987. Web: