---
product_id: 250428943
title: "Massive Audio BOOM88 400W Powered Hideaway Subwoofer | Ultra-Slim Underseat Active Sub, Built-in Class A/B Amp, Remote Bass Knob, High/Low Inputs, Compact Car Audio Bass System"
brand: "massive audio"
price: "¥68429"
currency: JPY
in_stock: true
category: "Massive Audio"
url: https://www.desertcart.jp/products/250428943-massive-audio-boom88-400w-powered-hideaway-subwoofer-ultra-slim-underseat
store_origin: JP
region: Japan
---

# 8" high-excursion woofer Ultra-slim underseat fit 400W Class A/B Amp Massive Audio BOOM88 400W Powered Hideaway Subwoofer | Ultra-Slim Underseat Active Sub, Built-in Class A/B Amp, Remote Bass Knob, High/Low Inputs, Compact Car Audio Bass System

**Brand:** massive audio
**Price:** ¥68429
**Availability:** ✅ In Stock

## Summary

> 🚗 Feel the BOOM, not the bulk — bass that moves with you!

## Quick Answers

- **What is this?** Massive Audio BOOM88 400W Powered Hideaway Subwoofer | Ultra-Slim Underseat Active Sub, Built-in Class A/B Amp, Remote Bass Knob, High/Low Inputs, Compact Car Audio Bass System by massive audio
- **How much does it cost?** ¥68429 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/250428943-massive-audio-boom88-400w-powered-hideaway-subwoofer-ultra-slim-underseat)

## Best For

- massive audio enthusiasts

## Why This Product

- Trusted massive audio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Bass Control:** Remote bass knob lets you fine-tune your low end on the fly for any music or mood.
- • **Sleek Underseat Design:** Ultra-slim aluminum enclosure fits discreetly under most vehicle seats, saving trunk space.
- • **Deep, Punchy Audio Impact:** 8-inch high-excursion driver produces tighter, richer lows for immersive sound clarity.
- • **Seamless System Integration:** Compatible with factory or aftermarket radios via high/low-level inputs and auto turn-on.
- • **Powerful Bass, Minimal Space:** 400W built-in Class A/B amplifier delivers clean, room-shaking bass without bulk.

## Overview

The Massive Audio BOOM88 is a compact, ultra-slim powered subwoofer featuring a 400W Class A/B amplifier and an 8-inch high-excursion driver. Designed to fit under most vehicle seats, it offers deep, punchy bass without sacrificing space. With remote bass control and compatibility with factory or aftermarket systems, it delivers customizable, high-impact audio for cars and trucks with limited space.

## Description

Buy Massive Audio BOOM88 400W Powered Hideaway Subwoofer | Ultra-Slim Underseat Active Sub, Built-in Class A/B Amp, Remote Bass Knob, High/Low Inputs, Compact Car Audio Bass System: Component Subwoofers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- 400W Built-In Class A/B Amplifier | Delivers clean, powerful bass from a compact hideaway subwoofer that fits under most seats or tight vehicle spaces.
- Ultra-Slim Low-Profile Design | Rugged aluminum enclosure provides big bass performance in a small footprint without taking up trunk or cargo room.
- Deep, Punchy 8" Bass Driver | High-excursion woofer delivers tighter, richer lows for a dramatic improvement in overall audio clarity and impact.
- Easy Integration With Any System | Works with factory or aftermarket radios using high- and low-level inputs, plus includes auto turn-on for convenience.
- Remote Bass Control Included | Adjust bass levels instantly from the driver’s seat for perfect tuning across any music style or driving condition.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07FC599BB |
| Additional Features | Bass Boost |
| Antenna Location | For trucks or cars with limited space |
| Audio Driver Size | 8 inches |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Mono |
| Battery Average Life | 5 hours |
| Best Sellers Rank | #403,624 in Electronics ( See Top 100 in Electronics ) #2,107 in Car Component Subwoofers |
| Brand | Massive Audio |
| Built-In Media | GAIN REMOTE |
| Color | Black |
| Compatible Devices | Home Theater, Gaming Console, Television |
| Compatible with Vehicle Type | Car, Truck |
| Connectivity Protocol | RCA |
| Connectivity Technology | RCA |
| Control Method | Remote |
| Controller Type | Remote Control |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 3.8 3.8 out of 5 stars (70) |
| Enclosure Material | Aluminum |
| Frequency Response | 150 hertz |
| Global Trade Identification Number | 00623169611117 |
| Impedance | 4 ohm |
| Is Waterproof | False |
| Item Dimensions D x W x H | 4.6"D x 16.75"W x 11.8"H |
| Manufacturer | Massive Audio |
| Model Name | BOOM88 |
| Model Number | BOOM88 |
| Mounting Type | Car Mount,Under Seat Mount |
| Number Of Circuits | 1 |
| Number of Audio Channels | 1 |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Processor Count | 1 |
| Signal-to-Noise Ratio | 90 db |
| Speaker Maximum Output Power | 400 watts |
| Speaker Size | 8 inches |
| Speaker Type | Subwoofer |
| Specific Uses For Product | For trucks or cars with limited space, enhancing car audio systems |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 8 inches |
| Tweeter Diameter | 1 inches |
| UPC | 623169611117 |
| Unit Count | 1 Count |
| Warranty Description | 90-Day Warranty (Authorized Massive Audio Retailers Only) 1-Year with Authorized Install |
| Warranty Type | Limited |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology | No Wireless Communication Technology |
| Woofer Diameter | 8 inches |

## Product Details

- **Audio Output Mode:** Mono
- **Brand:** Massive Audio
- **Connectivity Technology:** RCA
- **Frequency Response:** 150 hertz
- **Speaker Maximum Output Power:** 400 watts

## Images

![Massive Audio BOOM88 400W Powered Hideaway Subwoofer | Ultra-Slim Underseat Active Sub, Built-in Class A/B Amp, Remote Bass Knob, High/Low Inputs, Compact Car Audio Bass System - Image 1](https://m.media-amazon.com/images/I/61KP1w4kOIL.jpg)

## Available Options

This product comes in different **Size** options.

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**Shop now:** [https://www.desertcart.jp/products/250428943-massive-audio-boom88-400w-powered-hideaway-subwoofer-ultra-slim-underseat](https://www.desertcart.jp/products/250428943-massive-audio-boom88-400w-powered-hideaway-subwoofer-ultra-slim-underseat)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-22*