In this review, we will be comparing ORA4 and YU2, two Powered Bookshelf speakers by Kanto. Being Powered speakers, they both have built-in amplifiers so you don't need an external power amp or an integrated amp to power them.
Let's have a brief look at the main features
of Kanto ORA4 and Kanto YU2 first before getting into our more
detailed comparison.
| Key Specs | Kanto ORA4 | Kanto YU2 |
|---|
| Design | 2-way | 2-way |
|---|
| Built-in amplifier | 70-watt RMS (140-watt peak) | 50-watt RMS (100-watt peak) |
|---|
| Tweeter | 0.75" Soft-Dome | 0.75" Soft-Dome |
|---|
| Woofer | 4" Aluminum | 3" Kevlar |
|---|
| Frequency response | 60-22k Hz | 80-20k Hz |
|---|
| Max depth / sample rate | 24-bit / 96 kHz | 24-bit / 96 kHz |
|---|
| Bluetooth | Built-in 5.0 | No |
|---|
| Weight | 1.80kg / 4lbs | 1.30kg / 2.9lbs |
|---|
| Dimensions (H x W x D) | 8.3" x 4.7" x 7.2"
210.82 x 119.38 x 182.88mm | 5.90" x 3.9" x 5.3"
150.0 x 100.0 x 135.0mm |
|---|
The sections below take each area in turn: drivers, frequency response, physical size and what you get in the box.
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Drivers
Both ORA4 and YU2 are 2-way speakers.
Kanto ORA4Kanto YU2
TweeterWoofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| Driver |
Kanto ORA4 |
Kanto YU2 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
0.75-inch
|
0.75-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 4-inch
|
1 x 3-inch
|
ORA4 features a 0.75" Silk Soft-Dome Tweeter and 1 x 4" Aluminum Woofer. On the other hand, the YU2 features a 0.75" Silk Soft-Dome Tweeter and 1 x 3" Kevlar Woofer.
Frequency Response
ORA4 has a frequency range of 60-22k Hz whereas YU2 has a frequency range of 80-20k Hz. With a minimum frequency of 60Hz, the ORA4 can go significantly deeper on the low side and provide stronger bass compared to the YU2's min frequency of 80Hz.
The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the Bookshelf class in our database.
Low Frequency
Bookshelf Speakers
Neither pair reaches down to 20Hz, the usual definition of full-range, which is normal for speakers of this size. If you want the bottom octave for movies or bass-heavy music, add a subwoofer to whichever you choose. Visit our Powered Subwoofers section to find out more about the available options.
Cabinet Type and Port Position
Both ORA4 and YU2 have rear firing ports. Rear ported speakers generally need more room between the backside of the speaker and the wall compared to sealed and front/bottom ported speakers. Placing the speakers too close to the walls may cause the bass to sound boomy.
If you are limited in space and can't get the speakers away from the backwall, check our Speakers with Front Firing Ports page.
Physical Specs
The size of a speaker can sometimes be an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare Kanto ORA4's and Kanto YU2's external dimensions. Kanto ORA4 has external dimensions of 210.82 x 119.38 x 182.88mm (8.3inch x 4.7inch x 7.2inch) whereas Kanto YU2 has external dimensions of 150.0 x 100.0 x 135.0mm (5.90 x 3.9 x 5.3inch).
Kanto ORA4 is clearly the larger of the two speakers. Its body is 19mm wider, 61mm taller and 48mm deeper than Kanto YU2.
Below you can see the front view size comparison of Kanto ORA4 and Kanto YU2 in scale.
Comparison image of Kanto ORA4 and Kanto YU2 Size and External Dimensions
Base Surface Area Comparison
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base surface area of the Kanto ORA4 is approximately 217.8cm2 / 33.8inch2 and base area of the Kanto YU2 is approximately 135.0cm2 / 20.9inch2. The ORA4 requires 61% more surface area than the YU2 which gives it a small disadvantage on placement in tight spaces.
Here is another comparison that shows both speakers on a BDI Octave Media Cabinet, next to a standard size amplifier and turntable in scale:
Size Comparison image of Kanto ORA4 and Kanto YU2 on a Media Console
Weight Comparison The weight of a loudspeaker can become an important factor if you need to move and reposition the unit often. Weight of a speaker can also "sometimes" be an indicator of the rigidity of the enclosure and the quality of the internal components used. The Kanto ORA4 weighs 1.80kg / 4lbs and the Kanto YU2 weighs 1.30kg / 2.9lbs. This makes the ORA4 38% heavier than the YU2.
Here is a comparison of how ORA4 and YU2's weights compare with the average, max and min weights in Powered Bookshelf class.
Weight
All Bookshelf Speakers
What's in the Box of Kanto ORA4?
Here are the items that are included inside the box of ORA4:
- 4-pin Speaker Connector (6’)
- Power Cord
- 8 x Rubber Feet
- Quick Start Guide
What's in the Box of Kanto YU2?
Here are the items that come with the YU2:
- Power Cord
- Speaker Wire (10-feet)
- USB DAC Cable
- 3.5mm Auxiliary Cable (6.5-feet)
- 8 x Rubber Feet
- Manual
 Woofer Size |
4 inches
vs
3 inches
|
Larger woofer |
|
Low Frequency Response |
60 Hz
vs
80 Hz
|
Generates deeper bass |
 High Frequency Response |
22k Hz
vs
20k Hz
|
Generates higher frequency |
 USB Port |
USB-C
vs
No
|
USB port adds flexibility |
 RCA Connection |
Yes
vs
No
|
Connection via RCA input |
 Subwoofer Output |
mono-RCA
vs
No
|
Pair your speakers with external subwoofer |
 Height |
150mm
vs
211mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
135cm2
vs
217cm2
|
Takes less floor space |
 Price per pair* |
240USD
vs
399USD
|
costs less (*prices may change depending on the seller, location and time) |
|
RCA Connection |
Yes
vs
No
|
Connection via RCA input |
| General |
Kanto ORA4 |
Kanto YU2 |
| Brand |
Kanto |
Kanto |
| Speaker Type |
Powered Stereo Speakers |
Powered Stereo Speakers |
| Frequency Response |
60-22k Hz |
80-20k Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
70-watt RMS |
50-watt RMS |
| Watts Peak (Max) |
140-watt RMS |
100-watt RMS |
| Max Bit Depth |
24-bit |
24-bit |
| Max Sample Rate |
96 kHz |
96 kHz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
4" |
3" |
| Woofer Composition |
Aluminum |
Kevlar |
| Tweeter Size |
0.75" |
0.75" |
| Tweeter Type |
Soft-Dome |
Soft-Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
211.0mm (8.3") |
150.0mm (5.9") |
| Width |
119.0mm (4.7") |
100.0mm (3.9") |
| Depth |
183.0mm (7.2") |
135.0mm (5.3") |
| Weight |
1.80kg (4lbs) |
1.30kg (2.9lbs) |
| Enclosure |
Bass Reflex |
bass reflex |
| Available Colors |
Matte Black,Matte White |
n/a |
| Mounting Bracket |
No |
No |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Aux Inputs |
RCA |
RCA |
| USB Port |
USB-C |
No |
| Phone Input |
No |
No |
| Subwoofer Output |
mono-RCA |
No |
| Digital Input |
No |
No |
| HDMI Input |
No |
No |
| Headphone Jack |
No |
No |
| Ethernet Port |
No |
No |
Other |
|
|
| Parts Warranty |
2 Years |
2 Years |
| Labor Warranty |
2 Years |
2 Years |
These sit in different price classes - Kanto ORA4 costs roughly 1.7x what Kanto YU2 does. Expect it to lead on paper; the question is whether the gap is audible enough in your room to be worth it.
| Area | Better | Why |
|---|
| Bass |
A |
Kanto ORA4 digs deeper - 60Hz against 80Hz. |
| Built-in power |
A |
Kanto ORA4 has the bigger amplifier (70W vs 50W RMS). |
| Connections |
A |
Kanto ORA4 adds Bluetooth. |
| Size |
depends |
Kanto YU2 is easier to place; Kanto ORA4 is bigger, which usually goes with fuller bass. Your room decides. |
| Expandability |
A |
Kanto ORA4: a sub output. |
| Price |
B |
Kanto YU2 is cheaper - $240 against $399, about 40% less; arguably a different class. |
A Kanto ORA4
B Kanto YU2
depends neither is better in the abstract - it turns on your room, placement or how you will use them.
Only specs published for both speakers are judged; anything missing on either side is left out rather than guessed.
Which should you choose?
The usual trade-off: Kanto ORA4 measures better, Kanto YU2 costs about 40% less. Whether that gap is worth the money is the call only you can make - and in a normal room it is often smaller than the numbers suggest. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 80Hz anyway, which makes the cheaper Kanto YU2 much easier to justify. In a large or open-plan room, Kanto ORA4 has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, Kanto YU2 is the easier speaker to get right.
And remember what a spec sheet cannot show: how each looks in your room and whether the finish suits it, what dealer support and warranty are like where you live, and how they actually sound to you. If you can hear them first - ideally with your own music - that will tell you more than any number above.