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Tesoro Excalibur Spectrum review — RGB without breaking the bank
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Tesoro Excalibur Spectrum review — RGB without breaking the bank

by March 23, 2016

+ Simple no-nonsense design
+ Frame sports a sandblasted textured finishing which doesn't attract fingerprints
+ Driver software offers great backlighting control and macro programming
+ Solid build quality
+ Bright and even backlighting; white backplate enhances lighting effect
+ Gold-plated USB connector
+ Affordable pricing for an RGB keyboard


- Non-detachable cable
- Horrible looking driver software; certain common features like brightness control missing
- Non-Cherry stabilizers

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Bottom Line

The Tesoro Excalibur Spectrum looks like any other mechanical keyboard but sports excellent RGB backlighting while bearing an affordable price tag. This is definitely a RGB keyboard to consider for the budget conscious.

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RGB keyboards are aplenty in the market nowadays, but their pricing is still out of reach of gamers on tighter budgets, like yours truly. Let’s not beat around the bush and take a look at what should be the most affordable RGB keyboard in the market right now, the Tesoro Excalibur Spectrum.



Tesoro Excalibur Spectrum-1

The top panel of the box sports a nice product image and also some highlight features of the Tesoro Excalibur Spectrum. Spectrum is Tesoro-speak for RGB, in case you didn’t know.

Tesoro Excalibur Spectrum-2

On the back we have a clearer look at the keyboard, along with more descriptions of the keyboard’s features.

Tesoro Excalibur Spectrum-3

This is kinda interesting… It seems that these switches are similar to Razer’s custom mechanical switches. We do know that Razer switches are manufactured by Kailh but I didn’t know that Kailh can manufacture switches based on the same design for other OEMs.

Tesoro Excalibur Spectrum-12

Opening up the box, the keyboard is well protected from damage by bubble wrap.

Tesoro Excalibur Spectrum-4

These are the contents of the box. The Tesoro Excalibur Spectrum itself, a quick start guide and a product guide in case you want to check out other peripherals by Tesoro to complement your new purchase.



Tesoro Excalibur Spectrum-5

The Tesoro Excalibur Spectrum looks pretty much like every other mechanical keyboard in the market. That can be good or bad depending on your tastes. The frame is plastic with a rough sandblasted texture which doesn’t attract fingerprints. You can also see the white backplate between the keys. White backplates are preferred for RGB keyboards for more vivid backlighting. The cable is non-detachable.

Tesoro Excalibur Spectrum-13

Flipping the Tesoro Excalibur Spectrum over, the rubber feet are pretty small. The flip out feet are also pretty tiny.

Tesoro Excalibur Spectrum-10

The USB connector is gold plated with a nice grip. Cables are braided and stress reliefs on both ends seem sturdy enough. While gold plating doesn’t improve performance, it is always nice to see on any USB connector.

Tesoro Excalibur Spectrum-6

Let’s break some rules!



Body materialABS plastic
KeycapABS keycaps
USB report rate1000 Hz
Switch typeKailh Brown RGB switches
Microprocessor32 bit ARM Cortex
Cable1.55m, braided, non-detachable
Weight1300 g
Included accessoriesQuick start guide


User Experience

The Tesoro Excalibur Spectrum saves you the time needed to connect the cable to the keyboard as the it comes with a non-detachable cord. As usual for fixed cables, cable management will be more of a nuisance as you will not get any routing channels inset into the keyboard.

Tesoro Excalibur Spectrum-9

The cable here is also located on the upper right edge of the keyboard. Depending on how you route your cables, this can be either a nuisance or a godsend. I use a laptop, so the stress relief pushes against the edge of my notebook. Not great.



 The flip out feet to adjust the Tesoro Excalibur Spectrum are smaller than on most mechanical keyboards but are actually enough to keep it raised. Pushing the keyboard forward on purpose can make the feet collapse but the feet stayed put during even the most vigorous gaming and typing sessions.

Tesoro Excalibur Spectrum-11

The switches here are Kailh Brown switches with RGB LEDs fitted at the top. This is unlike the Kailh switches found in the Tesoro Gram Spectrum or any Cherry MX RGB switch which have the LEDs inside the switch housings for more even illumination. However the ones here do just about as great a job so I am not complaining. The brightness of the LEDs are decent but the Ducky Shine 5 does have brighter ones. Taking a look at the longer keys also reveal that the Tesoro Excalibur Spectrum relies on a wire stabilizer, which means you will have a hard time getting third party keycaps to customize it.

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Being an RGB keyboard, you would be nuts not to make use of the customizability of the backlighting. There are multiple modes to choose from, including individual key backlighting. You can program up to 6 different backlighting profiles which can also be linked to separate applications. You can make only the WASD cluster be illuminated when you have Battlefield 4 running, for example. Configurability isn’t really an issue with the Tesoro Excalibur Spectrum with the included driver software.

The driver software here is similar to the one the Gram Spectrum uses. Which means every comment I made regarding the ridiculously tacky UI design still stands. However I am not sure whether the driver here is improved or its a something to do with Windows 10 (I reviewed the Gram Spectrum on the MSI PE60 Prestige running Windows 8.1), but the annoying error sound every time I forget to press Apply or Cancel is not present here. It is so much more comfortable to use now. The driver software allows you to record macros, reassign keys and more. As the profiles can be automatically switched when starting a linked program, you can also reassign keys for a better optimized gaming cluster or program macros that will automatically be available when you start your game.  However I did notice an issue whereby it will not reset to the previously used profile when I quit the linked application, so if you have reassigned keys, make sure to reactivate the correct profile upon quitting or be ready for a lot of confusion.

Tesoro Excalibur Spectrum-14

The up and down arrow keys here adjust the brightness of the backlighting while the left and right keys change the backlighting modes. There are five levels of brightness including off. Surprisingly there is no brightness setting within the very comprehensive driver software. Other functions that can be accessed via the keyboard itself is NKRO/6KRO mode, macro recording and disable Windows key.

The Tesoro Excalibur Spectrum uses Kailh Brown switches which are often considered to be inferior to the more trusted Cherry MX switches. Kailh switches have actually come a long way and are now a valid alternative to Cherry switches. They do not feel the same though even when talking about the same color code.

For example, when comparing the Kailh Brown switches against Cherry MX Brown switches, I find them to be a less crisp and require slightly more force to press. The actuation point is also slightly earlier compared to the Cherry MX Brown switches. Aside from that, I find that they are just about as good during my usage. Depending on your tastes, you may even prefer them over the original Cherry MX switches.


The Tesoro Excalibur Spectrum is an excellent budget alternative for the gamers who want RGB backlighting but aren’t willing to part with a significant chunk of moolah just for more bling. The Tesoro Excalibur Spectrum is an excellent budget alternative for the gamers who want RGB backlighting but aren’t willing to part with a significant chunk of moolah just for more bling. The RGB backlighting works as it should and the driver software is really complete with every feature I want.

For RM399, I think it offers great value for money. Kailh switches are quite great in practice, and the only thing I don’t like about this keyboard is the tacky looking driver software. But then, I don’t spend all day staring at the driver software. I use the keyboard for gaming and typing, tasks the Tesoro Excalibur Spectrum is great for. For that, I award it the Silver Pokdeward for its great value for money and feature-rich driver software.


We thank Tesoro Malaysia for providing us with the Tesoro Excalibur Spectrum in this review.

About The Author
Vyncent Chan
Technology enthusiast, casual gamer, pharmacy graduate. Strongly opposes proprietary standards and always on the look out for incredible bang-for-buck.

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