Sundown Audio SAX-125.4

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Product Reviews

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  1. Awesome amp

    Posted by Unknown on 27th Mar 2013

    I have this amp running a set of front focal components and the rear channels bridged running a set of 10" SD-2's. The front scream and i think this amp is under rated, its seems like it throws out more power then they say.

Sundown Audio
Sundown SAX-125.4
1.00 LBS
Ships within 2 business days

Product Description

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It's flexible crossovers allow the user to run a 2-way active speaker setup with no external processing. It packs enough punch that one could also run a set of front speakers with one pair of channels and a subwoofer, bridged, on the other pair of channels for use as a total system amplifier where high power is not required.


  • Full range digital 4channel amplifier
  • High efficiency 4channel
  • Stable into 2 ohm stereo or 4 ohm mono
  • 12 dB/oct, variable subsonic filter
  • 12 dB/oct, variable high pass filter
  • 12 dB/oct, variable low pass filter
  • x1, x10 crossover multiply
  • 4 ways protection circuit
    (thermal, voltage, speaker short and DC)
  • Wired remote control included
  • MSRP $640 USD
Rated power output

----RMS power, 4 ohm stereo

125W x 4CH

----RMS power, 2 ohm stereo

200W x 4CH

----RMS power, 4 ohm bridged

400W x 2CH
Signal / Noise Ratio 105dB
Subsonic frequency crossover 10Hz ~ 500Hz
High pass frequency crossover 50(500)Hz ~ 500(5K)Hz
High pass frequency multiply x1, x10
Low pass frequency crossover 50(500)Hz ~ 500(5K)Hz
Low pass frequency multiply x1, x10
Frequency response 20Hz ~ 20KHz ( +/- 3dB )
Input sensitivity 6V ~ 0.2V ( +/- 5% )
T.H.D @ 4ohm < 0.1%
Efficiency @ 4ohm 70%
Fuse Rating 30A x 2
Dimensions 8.25"(W) x 2.32"(H) x 11.02"(L)