$449 $399

Tzero enriches even modest systems with power and natural bass, bringing the quality and full REL connectivity suite, long throw drivers and powerful, reliable amplifiers to a new lower price point and dimension.

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Miracle In Miniature

100% REL, Just Smaller

Tzero is, in many ways, the most difficult design we have ever executed because never before have we delivered so much for so little. 5 coats of lacquer, as in all Serie T/i, next generation Class D amplifiers, High level inputs, .1 separate input stages, rugged 6.5” main driver with exceptional output and low bass extension for its size means Tzero gives up little to much larger units from the competitors. Tzero is a miracle in miniature.


So Much, In So Little

Compact Power & Finesse

Tzero is built using a super stiff cabinet construction that drives the resonant frequency higher so it is more easily damped by our instrument-grade bracing. We utilized 5 full coats of lacquer, and solid aluminium feet and badging because REL owners understand quality must extend throughout a product, not just in the most obvious locations. And its diminutive scale allows it to all-but-hide among the furnishings in your home.


Outsized Performance

Bass Beyond Its Size

At REL every clean sheet design begins by defining and designing the best bass engine for a given application. While the long throw 6.5” is our smallest-to-date, but make no mistake it is powerful and articulate, able to fill medium-sized rooms effortlessly. Have a much larger space? Distribute them throughout for an unobtrusive spacious presentation of music and film sound.


Brains & Brawn

Right Sized Power & Control

Though Tzero is REL’s entry level, that doesn’t mean it can’t punch far above its weight class. 100W high current watts from a NextGen Class D amp means it holds its head high and is capable of delivering many years of satisfying performance. Includes a full REL connectivity suite, fast 8ms delay filter set and our famed High Level Input as well as a .1/LFE input.

Customer Reviews

Based on 20 reviews
Hifi system transformed

Just wanted to let you know. I recently bought a tzero to go with my rega rs3 speakers and your tzero has transformed my system and the music I listen too. I have been considered buying one for a while but now I’m wondering why I waited. Just wanted to thank you for a wonderful product. Thanks

Great Sub

Paired with Kef LS50 and an NAD c275bee power amp, sound is rich and fast. Seamless integration with the KEFs hooking up to the power amp taps. Beautiful finish, top notch construction.


excellent tight bass, constuction quality as good as it gets.

REL Performs Amazing

I recently purchased the new Technics SBC 700s-2 way coaxial speakers. Felt a need to compliment the lower frequency with a sub. All my searching led to the REL.
Once set up correctly, and take your time to do this, it is seemless. The music takes on more warmth and body. it is one of those audiophile purchases that lends itself to endless fine tuning if you desire.
But the advantage is it goes to my speaker outs on my integrated, so the sub receives the "identical" signal as my bookshelf Technics. A nice compliment to either bookshelfs of floor standing speakers with limited lower frequency.

Rel makes truly high end subwoofers

I initially bought this Rel T/Zero subwoofer to work in conjunction with a pair of Focal XS speakers to be used with my high end computer desktop. The combination is excellent by the way and highly recommend it. I have since decided to use the subwoofer with my TV which sounds just awesome and its not a small room either. So i will be buying another to use put it with my computers sound system again. It is truly a awesome sounding subwoofer, highly adjustable and can really fine tune the sound being a very knowledgeable audiophile. No it will not rattle the room or allow you to feel the air movement but if you want something that is very musical and tuneful, it is highly recommended.


Suggested Retail: $449 $399

Tzero enriches even modest systems with power and natural bass, bringing the quality and full REL connectivity suite, long throw drivers and powerful, reliable amplifiers to a new lower price point and dimension.



Closed Box, down-firing driver

Active Driver Size & Material

6.5in., 165mm long-throw, steel chassis

Passive Radiator Size & Material


Low Frequency Extention

-6dB at 38 Hz

Input Connectors

High Level Neutrik Speakon, Low Level single RCA, LFE RCA

Output Connectors


Power Output

100 watts (RMS)

Amplifier Type

Class D

Wireless Capability


Protection System

Fully Electronic Set Safe


D.C. Fault


Output Short


Mains Input Voltage

100-240 volts


2.00 Amp semi delay


W x H x D

8.5 x 9.5 x 10.5 in. (216 x 241 x 260 mm)

Net Weight

15 lbs. (6.8 kg)


High Gloss Black, High Gloss White, 5 coats

Supplied Accessories

Mains Lead


Neutrik Speakon

Yes (10 Meters Nominal)



Users Manual


In the interest of product development, REL Acoustics Limited reserve the right to vary these specifications without notice.