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 24 reviews
Absolutely Outstanding Product

Sounds like a million bucks.

Another fine product

I already own three REL subwoofers: two older Studio III and on T/5. The Tzero does not disappoint coupled with a pair of inexpensive but excellent Pioneer SP-BS22 flanking my Sony Trinitron HDTV (the last CRT made by Sony). It complements perfectly the limited bass response of the small 4" mid/woofer adding depth to male voices and a supremely clean lower octaves to the sound-stage. Given the price, a high quality product that does not disappoint the audiophile in me.

Tzero in Stereo

I have the NAD C-368 with BluOS, and B&W 685-S2 bookshelf with two Tzero subs, and when you phase your speakers in with the subs you "REALLY" get that 3 way speaker sound

T/Zero, Small but still a REL

I'm a recording engineer and I don't like subwoofers, never have. Always thought they were slow, sluggish unpleasant additions to any system just to hear a few notes at the low end of music.., until I tried a REL. The first REL was a T3 used for video LFE enhancement. The 2nd was a R-215 used in my studio to extend what I heard, in the low end, as I mixed. The amazing thing is that when I followed the REL recommended set up and dialed the sub in, I never heard the thing, only its absence when shut down. The 3rd one was a T5, I stumbled on used, for a secondary audio/video system. Can you see where I'm going here? Then I kept wanting a little more low end from my desl-top computer set up.., enter the T/Zero. So I went from not liking subs to being practically overrun by them. I must mention that all my Sub-Bass systems are REL, which I enthusiastically recommend to friends and colleagues. The only other sub that I have appreciated almost as much, is an old M&K VX-7 sealed box sub. Bottom line: RELs don't get in the way of the music.

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


Suggested Retail: $449

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.