APPENDIX
7-2
BOULDER 865 INTEGRATED AMPLIFIER SPECIFICATIONS
Balanced Line Inputs 4 pair
Auxiliary Balanced Outputs 1 pair (Switchable, Fixed or Variable)
Loudspeaker Output Connectors 6 mm/.250 inch post
Continuous Power, 8, 4 Ohms 150W
Peak Power, 4 Ohms 300W into 4 Ohms
THD at Continuous Power 20 to 2 kHz: 0.0035%. 20 kHz: 0.018%
Signal to Noise Ratio (re: 150W/8 Ohms) -108 dB, unweighted, 20 to 22 kHz
Frequency Response, 20 to 20 kHz +0.00, -0.07 dB
Frequency Response, -3 dB 0.015 Hz, 95 kHz
Maximum Input Level 6.0 Vrms
Input Impedance 100kΩ Balanced, 50kΩ Unbalanced
Common Mode Rejection (Balanced only) 60Hz: 90dB, 10kHz: 70dB
Crosstalk, L to R or R to L -112 dB or better, 20 Hz to 20 kHz
Crosstalk, Adjacent Inputs -112 dB or better, 20 Hz to 20 kHz
Volume Control Range 100 dB
Volume Steps 200 steps at 0.5 dB, ±0.05 dB
Maximum Voltage Gain 46 dB
Gain at Auxiliary Output Balanced: +4 dB, Unbalanced: -2 dB
Amplifier Size, W x H x D 17.0 x 7.38 x 15.25 inches, speaker connectors add 1.50” to depth
Weight 47 pounds. Shipping: 54 pounds
Power Requirements Voltage suitable for country where sold, 50-60 Hz
850W Maximum, 3W Standby
All specifications taken at 120 VAC mains power
