Boulder 800 Series

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Decades of unequaled audio engineering equal superior results. Boulder has always delivered class leading sound quality wrapped in refined designs. Welcome to the 800 Series.


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High-performance sound had always meant separate components, a lot of cables and large space requirements. Simple, integrated solutions fell short of the mark when it came to sound quality. In short, convenience came with compromise.

Until Boulder’s 865.

 

  • Massive, shielded, toroidal transformer and multiple filter capacitors for immediate power transfer

  • Efficient heatsink design means high power in a small chassis without excessive heat

  • Four pairs of inputs, each capable of custom configuration and naming

  • One pair of auxiliary outputs that can be set for fixed (to drive secondary systems) or variable operation (to drive a subwoofer or additional amplifier)

  • Fully balanced input circuitry for maximum resolution and sound quality

  • Rugged, easy-to-connect, high-current speaker terminals require no tools

  • Boulder’s own precision stepped volume control, the same as in the 2010 preamplifier

  • Input and preamplifier sections are housed in steel casework to eliminate interference from other portions of the amplifier

  • Supervising microprocessor controls all preamplifier functions, monitors protection circuits, and communicates with other Boulders

Brand: Boulder Amplifiers

Model Name/Number: 800 Series

Product Information:

SPECIFICATIONS 865 Integrated £17000

Output Power 150W / 8,4 Ohms
Peak Power 300W / 4 Ohms
THD & Noise 20 to 2kHz: 0.0035%, 20kHz: .018%

Frequency Response -3 dB @ 0.015Hz, 95kHz
Analogue Inputs 4 Balanced Line
Outputs 1 Speaker, 1 Aux (Fixed or Variable)

Volume 100 dB range in 0.5 dB steps
Max Gain 46 dB

S/N Re: 150W/8 108 dB, Unweighted 20 to 20kHz BW

System Boulderlink, 12V Trigger In & Out

Size 17.00 wide, 7.38 high, 15.25 deep (in.) 54,

Weight Shipping: 47 Pounds
Power 120 VAC, 50-60 Hz, 850 W Max

Specifications 860 Stereo Power Amplifier £11500

Output Power 150W / 8,4 Ohms
Peak Power 300W / 4 Ohms
THD & Noise 20 to 2kHz: .0035%, 20kHz: .018%

Frequency Response -3 dB @ 0.015Hz, 150kHz
Voltage Gain 26 dB
S/N Re: 150/8W-108 dB, Unweighted 20 to 20kHz BW

Input Impedance Bal: 50k, Unbal: 25k Ohms
Input Connectors 3 Pin Balanced
System Boulderlink, 12V Trigger
Size 17.0 wide, 7.38 high, 15.25 deep (in.)

Weight 45, Shipping: 56 Pounds
Power 120 VAC, 50-60 Hz, 850 W Max

850 Mono Power Amplifier £15900

Output Power 200W / 8,4,2 Ohms
Peak Power 400W / 4,2 Ohms
THD & Noise 20 to 2kHz: .0016%, 20kHz: .009%

Frequency Response -3 dB @ 0.015Hz, 150kHz
Voltage Gain 26 dB
Input Impedance Bal: 50k, Unbal: 25k Ohms
Connectors 3 Pin Balanced
System Boulderlink, 12V Trigger
Size 8.50 wide, 7.38 high, 15.25 deep (in.)

Weight 30, Shipping: 35 Pounds
Power 800 W Max

810 Pre-Amplifier £9800

Analog Inputs 4 Balanced Line

Outputs 2 Balanced Main, 1 Record

Volume 100 dB range in 0.5 dB steps
Max Gain 20 dB
Max Output 14.0 Vrms
Clip to Noise 118 dB
Frequency Response +0, -0.03 dB, 20 Hz to 20kHz
THD+N , 2V Out Less than 0.0045%
System Boulderlink, 12V Trigger
Size 17.00 wide, 5.50 high, 15.25 deep (in.)

Weight 18, Shipping: 26 Pounds
Power 120 VAC, 50-60 Hz, 22W Max

Condition: New

Voltage: 220/240/50Hz

Finish/Colour: Silver

Packaging? Yes

Accessories? Yes

Item Location: In Stock

Status: New

Dimensions 5708473 cm