Deliver toUnited Arab Emirates
In Phase USW300 300W Underseat Subwoofer - Active Car Subwoofer with Built-in Amplifier

Description:

  • Rich powerful base - With a built in amplifier, max output of 300 W and 130 W RMS, the In Phase USW300 is a true pocket powerhouse of audio performance
  • Aluminium coned subwoofer - Aluminium Cones are light in weight and can be really stiff, but they are really robust cones that rarely go wrong. This sub has a damping material built into its cone and spider to ensure a rattle-free performance and deep bass
  • Heavy duty durable construction - Die Cast Aluminium Chassis - no plastic structure here. The metal body is part of a secure and rigid structure, no flexing body when the unit is in full power, this also helps with bass output
  • Compact and discrete - Allowing to install the USW300 anywhere within vehicles Boot, Undersea, behind seat and foot wells

  • Reviews:

    5.0 out of 5 stars Amazing Bit of Kit

    L. · 28 February 2025

    (function() { P.when('cr-A', 'ready').execute(function(A) { if(typeof A.toggleExpanderAriaLabel === 'function') { A.toggleExpanderAriaLabel('review_text_read_more', 'Read more of this review', 'Read less of this review'); } }); })(); .review-text-read-more-expander:focus-visible { outline: 2px solid #2162a1; outline-offset: 2px; border-radius: 5px; } Fantastic bit of kit for the price,solid in build and design and very simple to fit with clear instructions.Hardest part was tracing the live feed wire from battery to unit.Sound is amazing at all levels with easily adjustable settings.Fits neatly under the seat.Love it

    5.0 out of 5 stars Good quality and easy to install

    m.t. · 5 June 2025

    Absolutely great sub for the price . Nice crisp base and sounds great

    4.0 out of 5 stars Great value, this does the job.

    A.P. · 9 February 2022

    For the price I can't complain. This does the job if you want to add a little low end and space is limited. It's not too difficult to install if you understand basic wiring. The sound quality isn't audiophile but it will improve any standard set up that lacks the low end. It has an adjustable crossover and gain controls on the unit itself, and an additional remote volume control. What's more it fits neatly under most car seats. You don't need to buy any additional equipment to get this going, all the wiring is also provided. Ok so maybe the bass isn't very tight, it's not going to compare to a 12 inch sub box booming insane levels of bass in your boot but it's an underseat space saving 6" woofer with a built-in amp (active) for less than £150, it is a massive improvement to standard car speakers.Personally I dial the crossover from my head unit (car stereo) as it has a sub out, this will give better results but you can use your factory stereo and wire in using the speaker connections on the back.It's never going to compete with a proper sub but it's nice and compact and provides the extra bass I was missing without breaking the bank.Edit: I've been using this unit for a while now and no complaints. I actually take the longer way home so I can enjoy the music 🎶

    5.0 out of 5 stars Fantastic value for money, easy to install.

    A. · 17 February 2025

    + Great Sound, Great Quality, Easy to Install, Fantastic Value.- No RCA Leads.This is a great little sub if you’re after a fuller sound for your car. I installed a set of component speakers into a Kangoo van and was disappointed with the bass, so I fitted this and it’s made a massive difference! It’s a substantial well built item and has all the sound controls on the remote instead of fiddly dials on the back of the unit which makes it great to tune while it’s situ without messing around accessing it again. It comes with all the leads you need to get it running via high level input, but you will need to but a phono lead if you want to connect it via low level RCA.

    5.0 out of 5 stars A brilliant sub for a small car.

    t. · 31 July 2024

    This sub is incredibly solidly built, the case being die-cast aluminium. It easily slipped under the passenger seat of my son’s Aygo (mk1), and held in place ok with some Velcro pads (not supplied) rather than trying to screw it down. The kit is complete with cables for many different types of installation and the instructions are very clear. We did have one installation issue that arose because we also changed out the Argo’s old CD player head unit for a more modern Pioneer one with bluetooth hands-free; The adapter that came with the radio had to have its yellow (permanent 12v) and red (switched 12v) cables crossed over as the subwoofer was not powering up correctly (and yes, the blue/white remote device wire was correctly installed!). After this, it was plain sailing to hide the wires under the central console without having to remove any seats for access. The result is a stereo with MUCH better bass that’s audible at even motorway cruising speeds. A very simple and very useful upgrade to the Aygo.

    5.0 out of 5 stars great for the price

    A.E. · 3 March 2025

    really good sub for the price, plenty of bass and easy to setup. fits under car seat perfectly. remote included is good to tune bass levels.recommended 👍🏻

    5.0 out of 5 stars Excellent!

    N. · 7 June 2025

    Absolutely excellent for the money small unit with a big kick of bass

    1.0 out of 5 stars The 8" subwoofer is good, the 10" one is poor.

    B. · 11 October 2024

    Some months ago I bought the 8" subwoofer. It was great so I decided to get a second for another vehicle. The listing now also included a 10" subwoofer so I bought that one instead. Sadly it is not up to the standard of the 8" one. It rattles badly at a reasonanble volume and only really plays one bass note. The build quality is also inferior to the 8" one. I can't recommend it. I'd have returned it if I'd not paid to have it installed, which involved the wires being cut, making it unreturnable.Buy the 8" one. It is built much more sturdily, does not rattle and plays a range of notes.

    Muy bueno

    J.A.M.H. · 2 May 2024

    (function() { P.when('cr-A', 'ready').execute(function(A) { if(typeof A.toggleExpanderAriaLabel === 'function') { A.toggleExpanderAriaLabel('review_text_read_more', 'Read more of this review', 'Read less of this review'); } }); })(); .review-text-read-more-expander:focus-visible { outline: 2px solid #2162a1; outline-offset: 2px; border-radius: 5px; } The media could not be loaded. Pues está perfecto 💯 para un acompañante del Audio tan poco Bajos... Yo con un aparato de chino Aliexpress ... Me va genial ... El cable amarillo a la batería es lo que cuesta pasar pero eso cada coche .... Yo demás fácil... Contento para lo que es y llegó rápido a Canarias

    Très pratique simple à connecter

    l. · 30 August 2024

    Pour améliorer les basses dans la voiture super rendu bonne basses et peu encombrant je recommande

    Fonctionne bien pour sa taille

    s. · 18 January 2024

    Installé entre les deux sièges d'une Daihatsu Copen, il n'est pas très performant mais ajoute un petit plus, par contre il sature très vite si on lui demande beaucoup.Par contre je pense qu'il serait beaucoup trop léger dans un coffre ou dans une voiture trop grosse, déjà dans la Copen qui est minuscule je trouve qu'il est presque parfait mais un peu de manque de puissance mais dans une trop grosse ça n'irait pas.à réserver uniquement pour les petits véhicules

    Spitze für Untersitzmontage

    R. · 4 November 2023

    Dieser Ufo Subwoofer passt genau unter den Sitz meines Peugeot 308cc. Er hat einen tolles Bass und ist von der Lautstärke völlig ausreichend als Innenraum Subwoofer.

    Erwartung deutlich übertroffen!

    W. · 18 May 2025

    Habe den Woofer im Alfa 159 unter dem Beifahrersitz verbaut.Das kleine Ding hat deutlich mehr Bumms wie erwartet!Macht einen wertigen Eindruck,Kabel mehr als lang genug.Wenn er jetzt noch hält,bin ich schwer beeindruckt.

    In Phase USW300 300W Underseat Subwoofer - Active Car Subwoofer with Built-in Amplifier

    Product ID: KO089TM6S14
    Condition: New

    4.4

    AED1,14071

    Price includes VAT & Import Duties
    Style Name: USW300
    Availability: In Stock

    Quantity:

    |

    Order today to get by 7-14 business days

    This item qualifies for free delivery

    Returns & Warranty policies

    Imported From: United Kingdom

    At BOLO, we work hard to ensure the products you receive are new, genuine, and sourced from reputable suppliers.

    BOLO is not an authorized or official retailer for most brands, nor are we affiliated with manufacturers unless specifically stated on a product page. Instead, we source verified sellers, authorized distributors or directly from the manufacturer.

    Each product undergoes thorough inspection and verification at our consolidation and fulfilment centers to ensure it meets our strict authenticity and quality standards before being shipped and delivered to you.

    If you ever have concerns regarding the authenticity of a product purchased from us, please contact Bolo Support. We will review your inquiry promptly and, if necessary, provide documentation verifying authenticity or offer a suitable resolution.

    Your trust is our top priority, and we are committed to maintaining transparency and integrity in every transaction.

    All product information, images, descriptions, and reviews originate from the manufacturer or from trusted sellers overseas. BOLO is not affiliated with, endorsed by, or an authorized retailer for most brands listed on our website unless stated otherwise.

    While we strive to display accurate information, variations in packaging, labeling, instructions, or formulation may occasionally occur due to regional differences or supplier updates. For detailed or manufacturer-specific information, please contact the brand directly or reach out to BOLO Support for assistance.

    Unless otherwise stated, all prices displayed on the product page include applicable taxes and import duties.

    BOLO operates in accordance with the laws and regulations of United Arab Emirates. Any items found to be restricted or prohibited for sale within the UAE will be cancelled prior to shipment. We take proactive measures to ensure that only products permitted for sale in United Arab Emirates are listed on our website.

    All items are shipped by air, and any products classified as “Dangerous Goods (DG)” under IATA regulations will be removed from the order and cancelled.

    All orders are processed manually, and we make every effort to process them promptly once confirmed. Products cancelled due to the above reasons will be permanently removed from listings across the website.

    Similar suggestions by Bolo

    More from this brand

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    In Phase USW300 300W Underseat Subwoofer - Active Car Subwoofer with Built-in Amplifier

    Product ID: KO089TM6S14
    Condition: New

    4.4

    In Phase USW300 300W Underseat Subwoofer - Active Car Subwoofer with Built-in Amplifier-0
    Style Name: USW300

    AED1,14071

    Price includes VAT & Import Duties
    Availability: In Stock

    Quantity:

    |

    Order today to get by 7-14 business days

    This item qualifies for free delivery

    Returns & Warranty policies

    Imported From: United Kingdom

    At BOLO, we work hard to ensure the products you receive are new, genuine, and sourced from reputable suppliers.

    BOLO is not an authorized or official retailer for most brands, nor are we affiliated with manufacturers unless specifically stated on a product page. Instead, we source verified sellers, authorized distributors or directly from the manufacturer.

    Each product undergoes thorough inspection and verification at our consolidation and fulfilment centers to ensure it meets our strict authenticity and quality standards before being shipped and delivered to you.

    If you ever have concerns regarding the authenticity of a product purchased from us, please contact Bolo Support. We will review your inquiry promptly and, if necessary, provide documentation verifying authenticity or offer a suitable resolution.

    Your trust is our top priority, and we are committed to maintaining transparency and integrity in every transaction.

    All product information, images, descriptions, and reviews originate from the manufacturer or from trusted sellers overseas. BOLO is not affiliated with, endorsed by, or an authorized retailer for most brands listed on our website unless stated otherwise.

    While we strive to display accurate information, variations in packaging, labeling, instructions, or formulation may occasionally occur due to regional differences or supplier updates. For detailed or manufacturer-specific information, please contact the brand directly or reach out to BOLO Support for assistance.

    Unless otherwise stated, all prices displayed on the product page include applicable taxes and import duties.

    BOLO operates in accordance with the laws and regulations of United Arab Emirates. Any items found to be restricted or prohibited for sale within the UAE will be cancelled prior to shipment. We take proactive measures to ensure that only products permitted for sale in United Arab Emirates are listed on our website.

    All items are shipped by air, and any products classified as “Dangerous Goods (DG)” under IATA regulations will be removed from the order and cancelled.

    All orders are processed manually, and we make every effort to process them promptly once confirmed. Products cancelled due to the above reasons will be permanently removed from listings across the website.

    Description:

  • Rich powerful base - With a built in amplifier, max output of 300 W and 130 W RMS, the In Phase USW300 is a true pocket powerhouse of audio performance
  • Aluminium coned subwoofer - Aluminium Cones are light in weight and can be really stiff, but they are really robust cones that rarely go wrong. This sub has a damping material built into its cone and spider to ensure a rattle-free performance and deep bass
  • Heavy duty durable construction - Die Cast Aluminium Chassis - no plastic structure here. The metal body is part of a secure and rigid structure, no flexing body when the unit is in full power, this also helps with bass output
  • Compact and discrete - Allowing to install the USW300 anywhere within vehicles Boot, Undersea, behind seat and foot wells

  • Reviews:

    5.0 out of 5 stars Amazing Bit of Kit

    L. · 28 February 2025

    (function() { P.when('cr-A', 'ready').execute(function(A) { if(typeof A.toggleExpanderAriaLabel === 'function') { A.toggleExpanderAriaLabel('review_text_read_more', 'Read more of this review', 'Read less of this review'); } }); })(); .review-text-read-more-expander:focus-visible { outline: 2px solid #2162a1; outline-offset: 2px; border-radius: 5px; } Fantastic bit of kit for the price,solid in build and design and very simple to fit with clear instructions.Hardest part was tracing the live feed wire from battery to unit.Sound is amazing at all levels with easily adjustable settings.Fits neatly under the seat.Love it

    5.0 out of 5 stars Good quality and easy to install

    m.t. · 5 June 2025

    Absolutely great sub for the price . Nice crisp base and sounds great

    4.0 out of 5 stars Great value, this does the job.

    A.P. · 9 February 2022

    For the price I can't complain. This does the job if you want to add a little low end and space is limited. It's not too difficult to install if you understand basic wiring. The sound quality isn't audiophile but it will improve any standard set up that lacks the low end. It has an adjustable crossover and gain controls on the unit itself, and an additional remote volume control. What's more it fits neatly under most car seats. You don't need to buy any additional equipment to get this going, all the wiring is also provided. Ok so maybe the bass isn't very tight, it's not going to compare to a 12 inch sub box booming insane levels of bass in your boot but it's an underseat space saving 6" woofer with a built-in amp (active) for less than £150, it is a massive improvement to standard car speakers.Personally I dial the crossover from my head unit (car stereo) as it has a sub out, this will give better results but you can use your factory stereo and wire in using the speaker connections on the back.It's never going to compete with a proper sub but it's nice and compact and provides the extra bass I was missing without breaking the bank.Edit: I've been using this unit for a while now and no complaints. I actually take the longer way home so I can enjoy the music 🎶

    5.0 out of 5 stars Fantastic value for money, easy to install.

    A. · 17 February 2025

    + Great Sound, Great Quality, Easy to Install, Fantastic Value.- No RCA Leads.This is a great little sub if you’re after a fuller sound for your car. I installed a set of component speakers into a Kangoo van and was disappointed with the bass, so I fitted this and it’s made a massive difference! It’s a substantial well built item and has all the sound controls on the remote instead of fiddly dials on the back of the unit which makes it great to tune while it’s situ without messing around accessing it again. It comes with all the leads you need to get it running via high level input, but you will need to but a phono lead if you want to connect it via low level RCA.

    5.0 out of 5 stars A brilliant sub for a small car.

    t. · 31 July 2024

    This sub is incredibly solidly built, the case being die-cast aluminium. It easily slipped under the passenger seat of my son’s Aygo (mk1), and held in place ok with some Velcro pads (not supplied) rather than trying to screw it down. The kit is complete with cables for many different types of installation and the instructions are very clear. We did have one installation issue that arose because we also changed out the Argo’s old CD player head unit for a more modern Pioneer one with bluetooth hands-free; The adapter that came with the radio had to have its yellow (permanent 12v) and red (switched 12v) cables crossed over as the subwoofer was not powering up correctly (and yes, the blue/white remote device wire was correctly installed!). After this, it was plain sailing to hide the wires under the central console without having to remove any seats for access. The result is a stereo with MUCH better bass that’s audible at even motorway cruising speeds. A very simple and very useful upgrade to the Aygo.

    5.0 out of 5 stars great for the price

    A.E. · 3 March 2025

    really good sub for the price, plenty of bass and easy to setup. fits under car seat perfectly. remote included is good to tune bass levels.recommended 👍🏻

    5.0 out of 5 stars Excellent!

    N. · 7 June 2025

    Absolutely excellent for the money small unit with a big kick of bass

    1.0 out of 5 stars The 8" subwoofer is good, the 10" one is poor.

    B. · 11 October 2024

    Some months ago I bought the 8" subwoofer. It was great so I decided to get a second for another vehicle. The listing now also included a 10" subwoofer so I bought that one instead. Sadly it is not up to the standard of the 8" one. It rattles badly at a reasonanble volume and only really plays one bass note. The build quality is also inferior to the 8" one. I can't recommend it. I'd have returned it if I'd not paid to have it installed, which involved the wires being cut, making it unreturnable.Buy the 8" one. It is built much more sturdily, does not rattle and plays a range of notes.

    Muy bueno

    J.A.M.H. · 2 May 2024

    (function() { P.when('cr-A', 'ready').execute(function(A) { if(typeof A.toggleExpanderAriaLabel === 'function') { A.toggleExpanderAriaLabel('review_text_read_more', 'Read more of this review', 'Read less of this review'); } }); })(); .review-text-read-more-expander:focus-visible { outline: 2px solid #2162a1; outline-offset: 2px; border-radius: 5px; } The media could not be loaded. Pues está perfecto 💯 para un acompañante del Audio tan poco Bajos... Yo con un aparato de chino Aliexpress ... Me va genial ... El cable amarillo a la batería es lo que cuesta pasar pero eso cada coche .... Yo demás fácil... Contento para lo que es y llegó rápido a Canarias

    Très pratique simple à connecter

    l. · 30 August 2024

    Pour améliorer les basses dans la voiture super rendu bonne basses et peu encombrant je recommande

    Fonctionne bien pour sa taille

    s. · 18 January 2024

    Installé entre les deux sièges d'une Daihatsu Copen, il n'est pas très performant mais ajoute un petit plus, par contre il sature très vite si on lui demande beaucoup.Par contre je pense qu'il serait beaucoup trop léger dans un coffre ou dans une voiture trop grosse, déjà dans la Copen qui est minuscule je trouve qu'il est presque parfait mais un peu de manque de puissance mais dans une trop grosse ça n'irait pas.à réserver uniquement pour les petits véhicules

    Spitze für Untersitzmontage

    R. · 4 November 2023

    Dieser Ufo Subwoofer passt genau unter den Sitz meines Peugeot 308cc. Er hat einen tolles Bass und ist von der Lautstärke völlig ausreichend als Innenraum Subwoofer.

    Erwartung deutlich übertroffen!

    W. · 18 May 2025

    Habe den Woofer im Alfa 159 unter dem Beifahrersitz verbaut.Das kleine Ding hat deutlich mehr Bumms wie erwartet!Macht einen wertigen Eindruck,Kabel mehr als lang genug.Wenn er jetzt noch hält,bin ich schwer beeindruckt.

    Similar suggestions by Bolo

    More from this brand

    Similar items from “Enclosed Subwoofer Systems”