“Wow this thing is awesome! Really enjoying using it on both vinyl cuts and other mastering operations - the bass is huge but still controlled and punchy.”

“This is the most analog sounding of all my digital compressors. The more aggressive styles, e.g. changing release towards linear, changes the personality of the device without getting artificial or sounding manipulative.

The measurable multi tone intermodulation distortion even at high sample rates is very low and in some cases lower than a competitive analog piece.”

“Absolutely loving Kelvin. We've been using it on absolutely everything, especially love using it as the first instance in a chain to set the colour and tone before any other processing. It's such a powerful tool. We find ourselves doing way less processing!”

“This EQ is truly marvelous! Besides EQ curves which are indistinguishable from the hardware, this has the best tube modeling I've ever heard in a plugin. It hits the sweet spot with a lush, full-bodied tube EQ for quick results up top, plus incredibly powerful and versatile features for fine-tuning below.”

“Basslane Pro is a really helpful tool for maintaining the integrity of the low end with lots of control. It's particularly useful on stereo synths / bass sounds and is also effective as a low end exciter.”

“Kelvin has quickly become my “go to” saturation and distortion plug-in. With a remarkable range of tones, it’s been in every single mix since I first opened it. Exactly what you’d expect from Tone Projects.”

“Unisum is the most flexible and best sounding software compressor I have in my arsenal.”

“Wow! What a great plugin. I’m a big fan of the Hygge saturation in Unisum so I’m glad Kelvin expands on the concept. I love the sound and the diversity of the different saturation types. It has been on every project I've worked on since getting it, doing sound design for 808 basses, adding a little saturation to keyboard parts, and as a harmonic enhancer for mastering.”

“It’s very impressive! I use it a lot to get a warmer or punchier feel, or to glue the track more together.”

“I don't really do saturation stuff a great deal... except now I do. I've tested a few other saturators and they never stuck. Kelvin is dead simple and sounds wicked. I'm using it all the time.”

“Basslane Pro is excellent for taming... or even the opposite, letting loose, bass frequencies. It's invaluable for vinyl pre-production making sure that your bass translates perfectly from digital master to analog record cutting.”

“This compressor is sensational! Really good for adding a bit of thickness. The bottom end is fantastic on it, really wonderful how it maintains and lifts the bass, whilst keeping all of the weight and depth down there. It definitely does things that nothing else does.”

“I often favor outboard gear for saturation, but Kelvin is in another league. Nice, sweet and big sound. Sometimes just putting it on a track without tweaking anything is all you need. I really like the sound of the EQ too. Big and bold in combination with the saturation. Gain staging is key here, just like when using outboard.”

“This is the mastering compressor the world has been waiting for! The level of precision by which you can manipulate the compression characteristics moves Unisum into a different category than any previous analog / digital hardware or plugin. It can be your ultimate transparent mastering compressor, or it can fully unleash your creativity by enabling you to control the most detailed aspects of a mix. This is a must-have plugin, and the most flexible compressor I’ve ever used.”

“Instant go-to. Kelvin is a tour de force: sheer sonic bliss and bewildering versatility packed into an equally elegant and intuitive interface. I love it and have already used tons of instances in various scenarios, barely driven or abused beyond reason... and anything in between. Ps: Don’t get me started on its glorious EQ section.”

“Unisum is a game changer. Tone, dimension and groove together with a spectacular sound and no compromises, make it the best software compressor I have. It reminds me of the elegance and musicality of the Cranesong STC-8 but with many more control options. Never heard something similar even with the highest oversampling settings in other plugins.”

“I have to say this compressor has blown me away like plug-ins or hardware rarely do. It just sounds fantastic. Even with minimal amount of compression going on it just makes everything sound great. I can't recommend it highly enough.”

“Imagine a pristine-sounding, utterly transparent compressor that allows not just 'typical compression' but has the ability to manipulate the space, feel, energy, density, groove of a track.

As a mastering engineer, I can manipulate without leaving fingerprints, I can be creative without treading on a musician's intention.”