Boulder 1163
Image source — © Boulder
Model name
1163
Input sensitivity (mV)
N/A
Input impedance (balanced) (Ω)
50 000
Input impedance (single-ended) (Ω)
25 000
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
Max current (A)
N/A
Output power (8Ω) (W)
200
Output power (4Ω) (W)
325
Gain (dBu)
26
Frequency response low +/- 3dB (Hz)
0.015
Frequency response high +/- 3dB (Hz)
150 000
Signal to Noise Ratio (dB)
N/A
Total Harmonic Distortion + Noise (0% global feedback) (%)
N/A
Total Harmonic Distortion + Noise (100% global feedback) (%)
0.002%, 20kHz 0.01% (8 Ohms)
Max power consumption (W)
110
Damping factor
N/A
Dimensions (mm)
166.1 x 180.0 x 72.0
Weight (kg)
24.5
Official link
Boulder 861 is a two—channel power amplifier with a balanced circuit, outputs 2x90 watts (4 ohms). It features minimal distortion, high sound quality and reliability, and is ideal for audiophiles.
The Boulder 2160 is a Class A dual—channel stereo power amplifier with up to 600 watts per channel (8 ohms). It is equipped with four discrete amplification stages, two powerful toroidal transformers and a fully balanced circuit to minimize distortion and noise (THD 0.0008%).
The Boulder 3060 is a top—of-the-line Class A stereo amplifier with 1000 watts per channel with a fully balanced circuit, 60 bipolar transistors per channel and 5 toroidal transformers. Provides clear, powerful sound with minimal distortion and a wide sound stage, the aluminum housing on a granite base dampens vibrations. Produced in a limited edition, each unit is hand-assembled in Colorado. Ideal for the most demanding audiophiles.
Boulder 1162 offers 2 x 300 Watts of output power, newly developed protection circuitry and 32 Amp IEC pre-terminated power cord - before us is a mighty device.