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Boss K680 Klash Series

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Boss K680 Klash Series


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KLASH power amplifiers are built to pound other amps into submission. Built like a power fortress, the chrome top plate and plexiglass cover form a mesmerizing combination that will attract everyone's attention. Each amp is packaged with a remote subwoofer level control for convenient bass adjustment.
  • 2-Channel High Power Amplifier
  • Max Power, 2 ohm: 700W x 2 channels
  • RMS Power, 4 ohm: 250W x 2 channels
  • Bridged Max Power: 1400W x 1 channel
  • Remote subwoofer level control
  • Heavy Duty Aluminum Alloy Heatsink
  • Class A/B Operation
  • Variable High Pass Crossover: 55Hz - 4.2kHz
  • Variable Low Pass Crossover: 35Hz - 155Hz
  • Nickel Plated RCA Low Level and High Level Inputs
  • Variable Input Gain Control
  • Remote Turn On/Off Circuit
  • MOSFET Pulse Width Modulated (PWM) Power Supply
  • 2 Ohm Stereo Stable Operation with Output Power Increase
  • Soft Turn-On Circuit
  • Thermal and Speaker Short Protection Circuitry
  • LED Power and Protection Indicators
  • Bass Boost: 0 - +18dB
  • Treble Boost: 0 - +12dB
  • Input voltage swith 100mV-2V /2V-8V
  • Frequency Response: 9Hz ~ 50kHz (+/-3dB)
  • S/N Ratio: >105dB
  • THD: 0.01%
  • Channel Separation: 90dB
  • Dimensions: 11-3/8"W x 2-5/16"H x 16-3/8"D
  • Damping Factor: 125+
  • Fuse Size: 40A
  • 1-year Manufacturer's Warranty

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
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Is this amp good for powering one 600 Watt RMS subwoofer? Should that Sub be a 2 ohm or a 4 ohm? I want to buy a Rockford Fosgate to maximize this amp I already have.
Jason F on Jun 8, 2015
Best Answer: Hello Jason,

Unfortunately, we cannot answer your first question. You only provided a power rating but there are far more variables involved to determine a match. Please provide a model number, not a description, so we can assist you.

To your second question, in theory the subwoofer would have to be a Dual-2ohm or Single-4ohm , if you were planning on bridging the amplifier - which is likely considering its a 2-Channel. To be fair, we suggest upgrading the amplifier, as it is not a CEA Complaint amplifier, does not match the performance/quality of Rockford Fosgate products, and the figures seem to be a bit too ambitious. Give our sales team a call if you need further assistance.
Reply · Report · Rick MStaff on Jun 8, 2015
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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Boss K680 Klash Series