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Soundxtreme ST-AP5 Digital Bass Control Machine Bass Maximizer and Bass Restoration Processor with Epicenter Reconstruction Bass Knob Dash Mount Remote Control -2nd Gen

Based on 208 reviews
Condition: New
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$38.99
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Availability: In Stock.
Fulfilled by Audio Watt Store

Arrives Sunday, Nov 8
Order within 10 hours and 15 minutes

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At a glance

Condition
New
Model
ST-AP5
Dimensions
5.5"D x 6.75"W x 1.5"H
Weight
0.86 kg
Color
Black
Output Wattage
150 watts
Speaker Size
5.5 in
Works with
Smartphone, Speaker

Features 5

  • Maximum Input Level: 15V RMS / Output Level: 13.5V Peak
  • Frequency response: 10-10000Hz output / Input noise rejection: 60dB
  • Accurately recreates and injects low frequency information back into a signal path
  • Subsonic filter and bass level control

Description

SoundXtreme ST-AP5 2nd Gen is a digital bass control processor built to help restore low-frequency impact from recorded music. Its dedicated bass maximizer and Epicenter-style reconstruction processing add depth and energy for systems centered on amplifiers and subwoofers. The compact processor and included dash-mount remote create an adjustable bass-enhancement solution for custom vehicle audio builds. The top panel visibly groups the ST-AP5 adjustment controls for bass processing, including Wide and Sweep controls, a Bass Output Control switch, a subsonic filter switch, and input grounding selection. This dedicated layout gives installers practical control over the processor as part of a tailored car audio system. The processor chassis visibly features paired RCA-style audio connections at the side panel, along with additional connection ports. Designed for integration with aftermarket head units, amplifiers, and subwoofers, the ST-AP5 can complement an existing vehicle audio installation when stronger low-end presence is the goal. The included dash-mount Bass Remote has a rotary adjustment knob marked from minimum to maximum and a long attached cable. Position the remote for convenient driver access, then tailor bass intensity to the music playing, your listening preference, and changing road conditions without reaching the main processor. The ST-AP5 package visibly includes the digital bass control processor and the dash-mount remote control knob. Add the processor to a custom car audio installation to bring dedicated low-frequency enhancement and accessible adjustment into the system. It is suited to bass-focused builds that use aftermarket source units, amplifiers, and subwoofers, without replacing those major components. A powerful bass system should adapt to what you play and how you listen. The SoundXtreme ST-AP5 2nd Gen helps rebuild and emphasize bass information in recorded music, supporting a deeper, fuller low-end character for subwoofer-focused vehicle audio systems. Its digital bass maximizer and reconstruction processing are intended for listeners who want more pronounced bass impact without replacing the existing head unit, amplifier, or subwoofer. Use the ST-AP5 as a dedicated enhancement stage when planning a custom car audio build. It can integrate with a wide range of aftermarket setups, making it a practical addition for installers and enthusiasts shaping a more energetic bass presentation. The included dash-mount remote places bass-intensity adjustment near the driver, so the system can be tailored for different recordings, listening preferences, and road conditions. Whether building a new system around amplifiers and subwoofers or refining an established setup, the ST-AP5 brings focused low-frequency processing and convenient in-car adjustment together in one compact component. SoundXtreme ST-AP5 2nd Gen Digital Bass Control Processor is designed for car audio systems seeking deeper, more impactful low-frequency performance. Using dedicated digital bass maximizer and Epicenter-style bass reconstruction processing, it helps restore and emphasize bass content within recorded music for a fuller, more energetic bottom end. The ST-AP5 is an effective addition to aftermarket vehicle audio systems built with head units, amplifiers, and subwoofers when the goal is a more pronounced bass presentation without replacing major existing components. Its compact processor design supports custom installation planning, while the included dash-mount remote bass knob provides convenient adjustment from the driver's position. Use the remote to tailor bass intensity to different music styles, listening preferences, and road conditions. The package includes the ST-AP5 digital bass control machine and remote control knob, providing the key components for accessible bass adjustment in a custom car audio build. Built for bass enthusiasts, installers, and drivers refining a subwoofer-focused system, the ST-AP5 combines bass restoration, bass maximizer processing, and practical in-car control.

Specs 20

Brand Xtremevision
Color Black
Output Wattage 150 watts
Product Dimensions 5.5"D x 6.75"W x 1.5"H
Number of Bands 1
Speaker Size 5.5 inches
Power Source Corded Electric
Output Channel Quantity 1

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 8

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


Thank you China!
Bang for the buck does the job & use this to displace the cost of a good amp/ equalizer or good head unit, it won’t clean up the signal so send it what it needs cheap radios i definitely recommend some kind of pre amp/ equalization, most of these cheaper units are similar in what you want but aren’t so crispy paired with other cheap electronics ... show more
Reviewed in the United States on October 11, 2026 by Adan Juarez Jr

performance is the same or better than much more expensive brands
This one is the best performer for the price. I had 2 of them in each car and one failed recently. It has 10 X UTC4558 IC chips and one or more failed. They are cheap to buy and I replaced all 10 of them and now it works great again. I still bought this one as a spare just in case but I had same problems with 3 different models of Soundstream Bass Machines which are almost double and triple the prices. And this one is the only one which goes down to 25 Hz boost availability. It works great with my 15" R series ported sub. It is not about SPL but soft lows in your car. Many friends would say the sound in my car is like in home sound system. I am proud of that. ... show more
Reviewed in the United States on November 6, 2025 by Koala58

Epic center
Better than the original audio control in my opinion
Reviewed in the United States on October 5, 2026 by Tony B Smith

Soon to find out
Haven't used the item as yet but looks good to me
Reviewed in the United States on January 31, 2026 by junior leonce

Not for a sound purist
This bass restorer works exactly as described thats why it gets 4 stars, however I found its effect to add some notes or even part to the music that were meant to be attenuated on purpose, Also no matter how it was set up regardless of crossover I could not get my subs to blend cohesively with my mids in most music genres sounded off or making bass guitars sound out of tune. Im very experienced in car audio and proper setup. ... show more
Reviewed in the United States on October 5, 2023 by Jian M.

Fue una compra éxitosa
Mi epicentro llegó bien su empaquetado fue muy bueno muchas gracias, lo recomiendo
Reviewed in the United States on September 27, 2026 by Ramon Merced Alberto

Se quema a los días de uso
El producto se instaló correctamente y a los 2 días empezó a sacar humo, lo bueno fue que me di cuenta del problema y no se alcanzo a dañar mi equipo de sonido ni tampoco mi camioneta, arrible producto, pediré mi reembolso
Reviewed in the United States on September 16, 2025 by Juan josue

Great on home audio use
Ive used it for about 2 weeks~ runs great gets a lil warm but not crazy i have it wired into a variable voltage 12v 1a dc charger i had for spare and i run it on ground to minimize ground loops idk what else to put here pretty functional
Reviewed in the United States on August 7, 2026 by WtfBoom
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