Used- Boulder 2160 Stereo Amplifier

Bias operation is Class-A to full rated output power and managed with an analog circuit that minimizes heat and power consumption

Boulder's most powerful, continually produced stereo amplifier: 600W per channel

Surface-mount circuit board design minimizes connection resistance and lead inductance

Non-resonant chassis carved from solid blocks of aluminum on Boulder's own CNC machining centers

Four fully-discrete 99H2 gain stages, potted and housed in machined shells for thermal stability and shielding

Two massive transformers are filtered, potted, and enclosed in a welded steel case

Power cycling, turn on sequencing, and status messages sent to Boulder preamplifier displays via the Boulder Link communication system

12V trigger connection for remote turn-on and use with most surround sound processors and external control systems

Supervising microprocessor circuitry controls and monitors protection systems, and the turn-on and turn-off of any linked amplifiers

Dual stage design incorporates the majority of gain in the first stage to maximize bandwidth and minimize distortion

Two pairs of speaker connections per channel to accommodate bi-wired loudspeakers

Fully-balanced design from the inputs to the outputs substantially reduces distortion and noise

• 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%

• EQUIVALENT INPUT NOISE (EIN), 20 KHZ BW

  1.5 μV

• MAGNITUDE RESPONSE, 20 TO 20 KHZ

  +0.00, -0.04 dB

• MAGNITUDE RESPONSE, - 3 DB AT

  0.015 Hz, 200 kHz

• VOLTAGE GAIN

  26 dB

• INPUT IMPEDANCE

  Balanced: 200kΩ
  Unbalanced: 100kΩ

• COMMON MODE REJECTION (BALANCED ONLY)

  60 Hz: 90 dB,
  10 kHz: 70 dB

• INPUTS

  3-pin balanced XLR

• OUTPUT CONNECTORS

  2 sets of 6 mm / .250-inch wingscrews

• WEIGHT

  Amplifier: 220 lbs. (99.8 kg)
  Shipping: 319 lbs. (144.7 kg)

• POWER REQUIREMENTS

  100, 110-120, 220, 240 VAC, 50-60 Hz
  250W nominal, 5000W at maximum output

• AMPLIFIER TOPOLOGY

  Pure Class A to full rated output