In Phase USW300 Compact Under Seat 300W Active Amplified Powered Subwoofer Sub

GBP 99.95
ApproximatelyUS $131.55
Condition:
New
More information - About this item condition
50 available500 sold
This one's trending. 500 have already sold.
Breathe easy. Returns accepted.
Shipping:
May not ship to United States. Read item description or contact seller for shipping options.
Located in: Nottingham, Nottinghamshire, United Kingdom
Delivery:
Varies
Returns:
Seller does not accept returns.
Payments:
     Diners Club
Earn up to 5x points when you use your eBay Mastercard®. Learn moreabout earning points with eBay Mastercard

Shop with confidence

eBay Money Back Guarantee
Get the item you ordered or your money back. Learn moreeBay Money Back Guarantee - opens new window or tab
Seller assumes all responsibility for this listing.
eBay item number:125283438613
Last updated on Nov 09, 2025 03:09:32 PSTView all revisionsView all revisions

Item specifics

Condition
New
Size
8 in
Impedance
4 Ω
Features
Aluminium, Amplifier, Bass Box
RMS Power
130 W
Manufacturer Part Number
USW300
Placement on Vehicle
Boot, Spare Wheel Recess, Under Seat
Brand
In Phase
EAN
Does not apply
Category

Item description from the seller

Seller business information

VAT number: GB 764391802

About this seller

CarAudioCentreUK

99.7% positive feedback158K items sold

Joined Jul 2005
Usually responds within 24 hours
CarAudioCentreUK is one of the UKs largest stockist of branded car audio equipment and have huge buyer power meaning we can offer the cheapest prices.

Detailed seller ratings

Average for the last 12 months
Accurate description
4.9
Reasonable shipping cost
5.0
Shipping speed
5.0
Communication
5.0

Seller feedback (80,538)

All ratingsselected
Positive
Neutral
Negative
  • l***k (365)- Feedback left by buyer.
    Past year
    Verified purchase
    Fast delivery from this seller and well packaged! Product is a good bit of kit. Installed it into the factory system of my covered camper van to give abit of depth to the system as it was very hollow with just the front speakers, and it does the job perfectly. Install was easy, cut 4 wires in the factory loom and attach to the 4 wires from the subwoofer loom, connect to the battery and you’re away.
  • k***a (436)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Very good sub, quite punchy in a small car, i did have to buy rca leads so it would fit so bear that in mind with budget
  • l***s (836)- Feedback left by buyer.
    Past year
    Verified purchase
    Very good. My Mini Cooper sound system wasn’t great now this has been added it sounds so much better. It’s so compact and fits under my glove box (mounted) I am very happy with inphase sub. I would recommend it if you sound system is quite and you want volume a bass.
See all feedback

Product ratings and reviews

4.9
14 product ratings
  • 13 users rated this 5 out of 5 stars
  • 1 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 0 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

  • Top favorable review

    Perfect, good sound and great installat...

    Perfect, good sound and great installation instructions. All wires you need supplied in box. Included remote which help you get the best sound whilst in the drivers seat. Fits perfectly under the seat also.

    Verified purchase: YesCondition: NewSold by: caraudiocentreuk

  • Quality sound

    Sounds amazing and adds an extra bass to my standard stereo 🤩 Didn’t fit under my seats because my seats go up and down so had to install it behind back seat. My son bolted it on with the brackets it came with and hid it out of the way.

    Verified purchase: YesCondition: NewSold by: caraudiocentreuk

  • Love it, Easy to wire up, Works great, I...

    Love it, Easy to wire up, Works great, Its totally transformed the sound, Will purchase another for my other vehicle

    Verified purchase: YesCondition: NewSold by: caraudiocentreuk

  • A very nice unit and well worth the mone...

    A very nice unit and well worth the money nice transaction good coms and would Buy again thank you

    Verified purchase: YesCondition: NewSold by: caraudiocentreuk

  • Very good and it improved my sound quali...

    Very good and it improved my sound quality in a very good way

    Verified purchase: YesCondition: NewSold by: caraudiocentreuk