Want to pump some serious power into your system without pumping too much cash out of your bank account? Then the powerful and affordable Kenwood KAC-629S is the amplifier for you!

Kenwood loaded this amplifier with components not usually found in this price range: MOSFET power supplies, extra-large capacitors, copper-shielded EE core transformers, and toroidal noise filters. Translation — the KAC-629S will keep your music crisp and clean even at the highest sound levels.


  • stereo or bridged mono output
  • Tri-way capable (Tri-Way crossover required)
  • 75 watts x 2 at 2 ohms
  • 150 watts x 1 in bridged mode
  • requires 10-gauge power and ground leads — wiring and hardware not included with amplifier
  • 80 Hz selectable low-pass crossover, 18 dB/octave
  • 150 Hz selectable high-pass crossover, 12 dB/ octave
  • speaker-level inputs
  • 4-way protection circuitry
  • signal-to-noise ratio 100 dB
  • dimensions: 9-7/8"W x 2-1/4"H x 9-7/8"D
  • 1-year warranty

Kenwood KAC-629S Reviews

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Written By bryce, 61301 illinois on Thursday, January 08, 2015

Good amp powering my 12" sub never an issue

Pros: ITs small durrable and cool

Cons: Not that ive found yet

Hands-on research

What's in the box?

Download owner's manual

  • 2-Channel amplifier with one 25 amp fuse
  • Rubber terminal cover
  • 4 Self-tapping screws
  • Instruction Manual (English)
  • Instruction Manual (French/Spanish)
  • Warranty Card

Product Research

Inputs and Outputs


Ground Isolation Circuit: This circuit cancels noise from the input of the negative side of the RCA cable, preventing vehicle electrical noise from interfering with the music.

Quiet Turn-On: This feature allows the amplifier to power up over a period of several milliseconds instead of instantaneously, protecting your speakers from thumps and other sounds that could be damaging.

Internal Crossover: The internal crossover is a 12dB/octave crossover that can be set for 80Hz low-pass or 150Hz high-pass operation. The crossover may be turned off for full-range output.


Right Side Of Amplifier:

  • Filter Switch: Allows you to select full range, 80Hz low-pass, or 150Hz high-pass crossover operation
  • Stereo/L+R/Mono Switch: Allows you to choose stereo, mono or L+R amplifier operation. In L+R mode, the left and right signals are combined before being amplified.
  • Input Sensitivity: This variable control allows you to adjust the input sensitivity of the amplifier from 0.2V-5V.

Inputs and Outputs

Right Side Of Amplifier:

  • Line In: Gold-plated stereo RCA jacks
  • Speaker Level Input: Screw terminals (each terminal is 0.25" wide)

Left Side Of Amplifier:

  • Speakers: Gold-plated screw terminals (each terminal is 0.35" wide)
  • BATT (power): Gold-plated screw terminal (terminal is 0.35" wide)
  • GND (ground): Gold-plated screw terminal (terminal is 0.35" wide)
  • P.CON (remote turn-on): Gold-plated screw terminal (terminal is 0.35" wide)
  • Fuse: Inserted 25-amp fuse


Maximum Power Output:

  • Bridged Into A 4-Ohm Load: 350 watts x 1
  • Per Channel Into A 4-Ohm Load: 120 watts x 2

Rated Power Output:

  • Bridged Into A 4-Ohm Load: 150 watts x 1
  • Per Channel Into A 2-Ohm Load: 75 watts x 2
  • Per Channel Into A 4-Ohm Load: 60 watts x 2

Our Product Research Team

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