£99.00

It has never been this cheap. We have no record of a lower price.

£99 today · cheaper than every other day in the last 3 months

In Phase USW300 Underseat Subwoofer - 300W Car Audio

View at Amazon

Price History & Forecast

Grey patches = out of stock. Cheaper = lower on the chart. Hover for exact prices.

Last 43 days · 43 data points (no recent data)

Historical
Generating forecast…
£99.00 £94.05 £96.03 £98.01 £99.99 £101.97 £103.95 18 July 2026 28 July 2026 08 August 2026 18 August 2026 29 August 2026
View at Amazon ↗

Usw300, USW300

Price data last checked 48 day(s) ago - refreshing...

NEW HERE?

Amazon shows you one price. We show you all of them.

Tosheroon watches Amazon prices so you don't have to. Every product on Amazon has a price history — we make it visible. Set the price you'd actually pay, and we'll email you the second it gets there. No app, no account, one email.

WHAT'S ON THIS PAGE

↑ Price chart
when this has been cheap or pricey
↑ Forecast
where the price is heading next
↓ Statistics
all-time high & low, recent range
↑ Price alert
name your number, we'll email you

Price Distribution

Price distribution over 43 days • 1 price levels

Days at Price
43 days 0 11 22 32 43 £99 Days at Price

Price Analysis

Most common price: £99 (43 days, 100.0%)

Price range: £99 - £99

Price levels: 1 different prices over 43 days

Description
The In Phase USW300 is a compact underseat subwoofer engineered to deliver powerful bass without sacrificing boot space. Featuring a built-in amplifier with 300W maximum output and 150W RMS, this active subwoofer packs serious audio performance into a pocket-friendly design. The aluminium cone construction combines lightweight materials with exceptional rigidity, reducing unwanted resonance and distortion whilst maintaining deep, clean bass response. Integrated damping material in both the cone and spider assembly eliminates vibrations and rattling, ensuring smooth performance across all frequencies. The die-cast aluminium chassis provides a heavy-duty, durable foundation that resists flexing and deformation even under demanding driving conditions. Installation is straightforward thanks to the underseat form factor, making it ideal for vehicles where traditional boot-mounted subwoofers aren't practical. Whether upgrading an existing car audio system or building one from scratch, the USW300 delivers professional-grade bass that transforms your in-car listening experience.

Key Features

The In Phase USW300 produces 300W maximum output with 150W RMS for dynamic, powerful bass reproduction in compact underseat packaging.

Aluminium cone construction provides lightweight rigidity and strength whilst integrated damping material prevents vibration and rattling for clean bass.

Die-cast aluminium chassis delivers a rigid, flexure-resistant structure that maintains structural integrity and acoustic performance during extended use.

Built-in amplifier eliminates the need for external amplifier installation, simplifying integration into your existing car audio system.

Underseat design fits discreetly beneath front or rear seats, preserving boot space whilst providing meaningful low-frequency enhancement.

Product Specifications
Brand
In Phase
Model
USW300
Colour
Usw300
Size
Pack Of 1
ASIN
B089GZ6F14
Category
Electronics & Photo > Car & Vehicle Electronics > Car Electronics > Audio > Speakers > Enclosed Subwoofer Systems
Domain
Amazon UK
Release Date
04 April 2022
Listed Since
01 June 2020

Barcode

No barcode data available

Similar Products You Might Like

mini kitty Sexy Half Cup Lingerie Set - Bra and Panties
91% match

mini kitty Sexy Half Cup Lingerie Set - Bra and Panties

mini kitty

£9.99 08 Aug 2026
mini kitty Sexy Lingerie Set - Bra, Panties and Nipple Covers
91% match

mini kitty Sexy Lingerie Set - Bra, Panties and Nipple Covers

mini kitty

£8.99 08 Aug 2026
Puma Teamrise Jr Shorts Kids Red-White 176 EU
90% match

Puma Teamrise Jr Shorts Kids Red-White 176 EU

PUMA

£9.98 03 Aug 2026
High Waist Butt Lifter Shapewear - Seamless Tummy Control Thong
90% match

High Waist Butt Lifter Shapewear - Seamless Tummy Control Thong

Generic

£37.90 22 Jun 2026
Winshape WH3 Women's Casual Sport Slim Fit Essential Track Pants Black black Size:XL
90% match

Winshape WH3 Women's Casual Sport Slim Fit Essential Track Pants Black black Size:XL

WINSHAPE

£43.63 08 Oct 2026
WINSHAPE Cul601c Women's Tracksuit Bottoms Functional Comfort Ankle Length Culottes High Waist Dark Blue
90% match

WINSHAPE Cul601c Women's Tracksuit Bottoms Functional Comfort Ankle Length Culottes High Waist Dark Blue

WINSHAPE

£39.57 14 Oct 2026
Urban Classics Women's Organic High Waist Balloon Sweatpants - Black XS
90% match

Urban Classics Women's Organic High Waist Balloon Sweatpants - Black XS

Urban Classics

Price unavailable
Winshape Hape Winston Women's Training Trousers WH3, Womens, Damen Trainingshose WH3, night-Blue
90% match

Winshape Hape Winston Women's Training Trousers WH3, Womens, Damen Trainingshose WH3, night-Blue

WINSHAPE

£40.91 13 Oct 2026
Winshape Hape Winston Women's Training Trousers WH3, Womens, Damen Trainingshose WH3, night-Blue
90% match

Winshape Hape Winston Women's Training Trousers WH3, Womens, Damen Trainingshose WH3, night-Blue

WINSHAPE

£43.53 10 Oct 2026
WINSHAPE Cul601c Women's Tracksuit Bottoms Functional Comfort Ankle Length Culottes High Waist Dark Blue
90% match

WINSHAPE Cul601c Women's Tracksuit Bottoms Functional Comfort Ankle Length Culottes High Waist Dark Blue

WINSHAPE

£40.92 13 Oct 2026
Winshape WH3 Women's Casual Sport Slim Fit Essential Track Pants Black black Size:S
90% match

Winshape WH3 Women's Casual Sport Slim Fit Essential Track Pants Black black Size:S

WINSHAPE

£43.23 08 Oct 2026
High Waist Seamless Shapewear Thong - Butt Lifter Tummy Control
90% match

High Waist Seamless Shapewear Thong - Butt Lifter Tummy Control

Generic

£37.90 22 Jun 2026
High Waist Seamless Shapewear Thong - Butt Lifter Tummy Control
90% match

High Waist Seamless Shapewear Thong - Butt Lifter Tummy Control

Generic

£37.90 22 Jun 2026
Nike Club HQ6114 Men's Oversized Woven Tracksuit Bottoms
90% match

Nike Club HQ6114 Men's Oversized Woven Tracksuit Bottoms

NIKE

Price unavailable
High Waist Seamless Shapewear Thong - Tummy Control Butt Lifter
90% match

High Waist Seamless Shapewear Thong - Tummy Control Butt Lifter

Generic

£40.59 30 Jun 2026
PUMA teamRISE Short Jr - Boys Moisture-Wicking Shorts
90% match

PUMA teamRISE Short Jr - Boys Moisture-Wicking Shorts

PUMA

£7.85 04 Aug 2026
BIG SAM SPORTSWEAR COMPANY Men's Baggy Pants Loose Fit Stripped Gym Workout Sweatpants with Pockets, Red, Small
90% match

BIG SAM SPORTSWEAR COMPANY Men's Baggy Pants Loose Fit Stripped Gym Workout Sweatpants with Pockets, Red, Small

BIG SM SPORTSWEAR MUSCLEWEAR

£43.02 01 Aug 2026
PUMA Mens ESS 10" Shorts White - Regular Fit
90% match

PUMA Mens ESS 10" Shorts White - Regular Fit

PUMA

Price unavailable
Ulla Popken Ladies Plus Size Plus Size Trousers Slim Fit Elasticated Waistband Side Slits Up to Size 66/68 709769, Black, 56W / 30L
90% match

Ulla Popken Ladies Plus Size Plus Size Trousers Slim Fit Elasticated Waistband Side Slits Up to Size 66/68 709769, Black, 56W / 30L

Ulla Popken

£29.49 13 Oct 2026
BENLEE DAGETT Men's Thai Boxing Trousers, Pink/Black/White, S
90% match

BENLEE DAGETT Men's Thai Boxing Trousers, Pink/Black/White, S

Ben Lee

£41.19 06 Oct 2026
BENLEE DAGETT Men's Thai Boxing Trousers, Black/White, L
90% match

BENLEE DAGETT Men's Thai Boxing Trousers, Black/White, L

Ben Lee

£53.59 07 Oct 2026
High Waist Shapewear Butt Lifter - Seamless Tummy Control
90% match

High Waist Shapewear Butt Lifter - Seamless Tummy Control

Generic

£37.90 22 Jun 2026
High Waist Trainer Women's Seamless Thong Shapewear - Tummy Control
90% match

High Waist Trainer Women's Seamless Thong Shapewear - Tummy Control

Generic

£40.59 22 Jun 2026
Fairtex Slim Cut Muay Thai Boxing Shorts - BS1908 (White - Satoru, Small)
90% match

Fairtex Slim Cut Muay Thai Boxing Shorts - BS1908 (White - Satoru, Small)

Fairtex

£58.81 07 Oct 2026