Logitech Z623 Review - Audiostance

Logitech Z623 Review

The Low-Down!

The Logitech Z623 might be one of the best computer speakers available right now. Great value for money, incredible performance, and THX certification are all contributing factors that set the system above so many.

In terms of performance and sound quality, the Logitech 7623 is identical to the Z625. Logitech has basically just added a few extra input options and called it an upgrade. If having additional inputs are important to you, then the Logitech Z625 might be a better option for you.

Logitech Z623 Specs

Total Power Output
200W RMS

AUX Input

Satellite Power
35W each

2 years

The 2.1 surround sound speaker produces an outrageous 200 watts RMS power when paired with your computer or device. The result is that you will never have to sacrifice loudness for clarity, the Z623 can do it all.

The Logitech Z623 comes with a powerful subwoofer and two individual satellite speakers, which are black in color and have a sleek matte finish. The THX certification provides a standard that these speakers have to pass rigorous testing that few meet: deep bass, ample power and trusted performance.

The system has RCA and 3.5mm inputs, which allows you to connect a variety of computers, game systems, music players, DVD players and televisions at once. The 3.5mm input lets you listen to audio privately using the headphone jack and integrated controls on the right satellite speaker make it easy to adjust to your preferences. With so many features and guaranteed performance, the Logitech Z623 might be just what you’re looking for in your next upgrade.

Logitech Z623 vs. Z625

In terms of performance and sound quality, the Logitech 7623 is identical to the Z625. Logitech has basically just added a few extra input options and called it an upgrade.

The Logitech Z7623 features a single 3.5mm input and an RCA input, while the Logitech Z625 features an optical Input, two 3.5mm input, an RCA input, as well as a headphone jack.

Logitech Z623


The Logitech Z623 speaker system comprises of three components: the two satellite speakers, and the subwoofer. The satellite speakers are 7.8 inches in height, 5.6 inches wide and 5.4 inches in depth. They can generally be placed on the sides of your desk and shouldn’t take up much space.

There are also rubber feet situated at the bottom of the satellite speakers to prevent vibration and shaking when listening to music at higher levels. The satellite speakers are designed to point at an upward angle, where the top of the speaker is narrow and the bottom is wide.

The right satellite speaker has all the main controls attached to the front of it, whereas the left is smooth with just the driver. The right speaker controls include: power, volume, and bass. Each speaker has a front-firing, 2.5 inches in length, sealed driver that pushes the bass-forward.

The satellite speakers have a matte black finish and the sealed drivers are enclosed by a soft subtle rubber and metal grill. The right speaker also has additional inputs being a 3.5mm connection, AUX and headphone jack.

Logitech Z623


The subwoofer measures approximately 11.9 inches in height, 11.1 inches in depth and 10.4 inches in width. If you remove the grill you will notice the exact size of the subwoofer is 7 inches, which raises the query if the subwoofer enclosing was made for a bigger system. However do not fret about saving a few inches of space, the Z623 subwoofer delivers some serious audio levels. If you really turn up the volume, your windows will begin to shake a little.

As previously stated the bass control is situated on the right satellite speaker, which can help adjust your subwoofer to your preference. On the rear panel of the subwoofer you will notice a 3.5mm input and a stereo RCA input, which can be connected to your computer directly. The satellite speakers will also need to be powered by an AC cable that comes included with the speakers.

Logitech Z623


Logitech speakers are surprisingly good because nobody expects a company that manufactures keyboards and mice to do so well in audio quality, but really they do. Logitech purchased high-end earphone makers Ultimate Ears a few years ago, and every successive generation of speakers have sounded better than the previous versions. With all these leaps and improvements we now arrive at the most important question, how does the Logitech Z623 really sound?

‘The sound performance of the Logitech Z623 is outstanding.’

The sound performance of the Logitech Z623 is outstanding, the two satellite speakers produce clean and crisp high notes and a very broad midrange. Each speaker delivers 35 watts and the subwoofer pushes 130 watts, making the Z623 the perfect option for any house party.

Behind the grills of the satellite speakers are magnetically shielded drivers with an aluminum phase plug. The phase plug focuses the acoustic energy, while dissipating heat making the speakers even more efficient. The subwoofer gives out deep and powerful bass, which means that watching movies, playing games or listening to music can be a truly explosive experience.

‘The 200 watts RMS power produces excellent sound with little distortion.’

The 200 watts RMS power produces excellent sound with little distortion. Designed to deliver the most accurate experience out of the box, these speakers are also THX certified. THX or ‘Tomlinson Holman’s Experiment’ means that these speakers had to go through various tests and benchmarks in order to pass the industry standards for sound reproduction systems.

What this entails for the consumer is that the speakers produce the sound that the audio engineer who worked on the film, game or album, intended for you to hear. The THX certification is an extremely difficult standard to earn, so by purchasing a system with this approval guarantees the absolute best audio imaginable.

Logitech Z623

Gaming Speakers

If you’re in the market for a gaming speaker, there are some key elements that you’re probably looking for. You’d want detailed sound so you can hear your enemies sneaking behind you, and an immersive experience that isn’t just loud distorted crackling noise.

The audio quality that you get from the Z623’s is crystal clear, allowing you to hear your enemy footsteps in the background, with well-defined midranges and hard bass that makes you feel like you’re really in the action. The experience can be truly otherworldly, as you feel the air piercing sounds of bullets flying above your head or grenades blowing up vehicles. Be warned not to turn the volume up too loud or you might get your neighbors worried.

Logitech Z623 System requirements

The Logitech Z632 works with any of the following devices with either a headphone jack (3.5mm) or RCA inputs:

  • Computer
  • Television
  • Smartphone
  • Tablet
  • DVD player
  • Blu-ray player
  • Music player
  • Xbox
  • PlayStation
  • Wii

Omnidirectional Speakers

Music vocals from rock, hip-hop, and opera are all brought together with the speaker being capable of providing a good balance to all. The speakers are also great at meeting specific frequencies and directing them for optimal listening. Logitech has stated that these speakers are omnidirectional, accordingly, you can put it behind a couch or under a desk and not have to worry about the sound not reaching you.

What’s in the Box?

  • Logitech Z623 Speaker System
  • 1 x Subwoofer
  • 2 x Satellite speakers
  • 3.5mm Audio input cable
  • User manual
  • Warranty card
Logitech Z623 What’s in the Box?

What We Liked:

  • THX-certified at a great price
  • Cinematic quality sound, great audio detail, and thundering bass
  • No distortion at high volume levels
  • 200 watts of power is more than any 2.1 speaker system will need
  • Various inputs and outputs to connect devices
  • The sleek black design fits well with any home or environment
  • Logitech is a trusted brand with a good speaker history

What We Didn’t Like:

  • The extension cable is not very long, however, it’s still appropriate for most desktop applications.
  • Remote control is not included.


The Logitech Z623 speaker system is great value for money producing crisp and clear sounds, with a detailed midrange and ground thumping bass. The 200 Watt RMS powered speaker with precision 2.1 surround sound effect ensures that the Z632 speaker acts less like a dual speaker, and more like a 3D 7.1 entertainment system. Not only is the speaker capable of reaching high levels of sound, but it is also distortion-free.

The Z623 is very versatile – it can be used for your console gaming, home theater, and PC or laptop audio. The speaker has easily accessible volume, bass, and power controls, as well as a port for your headphones. The connection type is RCA analog, and the frequency response ranges from 35 Hz to 20 kHz (20 000 Hz).

Overall this stereo system is for those who like to multitask at their computers, going from streaming music and videos, to gaming and back again. The Logitech Z623 speaker has enough power and versatility to do just about anything.

Audiostance Author - Zach Scheepers
Written by

Zach is a South African-based writer, audiophile, and PC enthusiast. When he's not writing for Audiostance, you'll find him reading and re-enacting scenes from the Lord of the Rings.

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  • Hi, Maybe you can help me…. I just bought the Logitech z623 speakers today and I’m so disappointed. My Cambridge Soundworks PCWorks speakers sound much better. (And they are over 15 years old and cost 30 something dollars… Very clear sound with adjustable bass) As opposed to today’s purchase which sound muddled in comparison. Maybe I’m missing something? Are these speakers too powerful for my PC? (HP all-in-one, almost new) Thanks for any insight Nick

    • It works well with my Samsung a6 2016 as a player and installed the apps “Poweramp” Can get the best sound, deep base and high frequency sound, the best sound ever for me!

  • What is the power consumption of Logitech Z623 computer speaker? I like to find out whether it can work with my inverter power supply during current cut which is frequent in my area.

  • My last speaker system was the Logitech X530 which I was very happy with, until after 10 years or so the left channel quit (after moving).
    The Z623 just arrived yesterday. Easily plugged it all in, all cable lengths work perfectly for my desktop.
    First test: Joe Cocker “Feelin’ Alright”
    Had an eargasm.

    • Logitech certainly has some impressive longevity to their PC audio products. I’ve also got a few older 5.1s from Logitech lying. Thanks for sharing your experience!