Boulder 2160 Stereo Power Amplifier

Boulder's most powerful continuously produced stereo amplifier delivers 600W per channel with Class-A biasing maintained to full output, managed by analog circuitry that optimizes thermal performance and efficiency. Four fully-discrete 99H2 gain stages—potted and housed in machined shells—provide exceptional thermal stability and electromagnetic shielding. The non-resonant chassis is precision-carved from solid aluminum blocks using Boulder's proprietary CNC machining, while dual massive transformers are filtered, potted, and secured in a welded steel enclosure. Fully-balanced signal path from inputs through outputs substantially reduces distortion and noise. The dual-stage topology concentrates gain in the first stage to maximize bandwidth while minimizing distortion. Boulder Link integration enables seamless communication with Boulder preamps and coordinated power sequencing, complemented by 12V trigger compatibility for most surround processors. A supervising microprocessor manages protection systems and amplifier synchronization. Dual speaker connections per channel accommodate bi-wired loudspeaker configurations.

Specifications

Peak Power, 8 Ohms- 600W

Peak Power, 4 Ohms- 1200W

Peak Power, 2 Ohms- 2400W

THD, 8 Ohms, 600W- 20-2 kHz: 0.0008%, 20 kHz: 0.0040%

THD, 4 Ohms, 600W- 20-2 kHz: 0.0012%, 20 kHz: 0.0065%

THD, 2 Ohms, 600W- 20-2 kHz: 0.0018%, 20 kHz: 0.0100%