outstanding audio quality

unique feature set

used by 1500+ fm stations

** NEW SITE **

September 2 2021: We have a new site! In a few days we plan to replace this one completely, for now it's availalbe for testing. Please go to thimeo.com

What is Stereo Tool?

Stereo tool is a software-based audio processor which offers outstanding audio quality and comes with many unique features. It is used by over 1500 FM stations ranging from small local stations to 50-100 kW stations and nation-wide networks with dozens of transmitters, thousands of streaming stations and many DAB+, HD, AM and TV stations. It can be used for both live and file based processing.


fm transmitter features

Stereo Tool can generate an MPX signal, including stereo and RDS data, which can be sent to the FM transmitter using a good quality 192 kHz capable sound card. No separate hardware stereo coder or hardware RDS encoder is needed.


- Repairs clipped audio
- Removes distortion, restores dynamics
- Also used by police forensics labs


Improves the sound of MPEG2/MP3 style lossy compressed files


Removes unwanted constant sounds, such as a 50/60 Hz hum from bad cables

spectrum control

Non-compressing spectrum equalization


- Wideband AGC
- Two multiband compressors, 2-9 bands
- Wideband compressor
- Low level boost for classical music

stereo widening

Choice of multiple stereo wideners

loud & clean!

Upto 140% audio level at 100% modulation
Gives 2-3 dB extra headroom for highs
Be the loudest and cleanest station on the dial!


Controls RF bandwidth to avoid reception problems
Compatible with all receivers
Stations report upto 30 km bigger reception area

stereo / rds

Built-in stereo and RDS encoder
RT+ and remote control support

"Stereo Tool rocking in serveral large markents. Engineers are stunned when they hear it and how easy it competes whit (and actually sounds better than) $10K+ boxes."

Ray Fisher, Broadcast engineer

"Stereo Tool is an incredible program. After using it in a test environment, I was so motivated that i had it on 4 radio stations in less than a month. It is so loud and clean that it made the other stations sound like they were in a tunnel. I have since moved 14 more stations to Stereo Tool. Not only does it sound great, but it is constantly being improved. The support system and response form Han"

Chris Collins, Louisiana, US

"Multipath Clipper Without it our signal fades as most do. The fringe gets weaker on the edges. With it, we seem to stal full signal until the end, then it drops off suddenly. The difference is that you can listen to the signal on the fringe much more easily than without."

D. Solomin, Broadcast engineer, us

"This was a real life-saver for me. I have two, four-disc collections of rock n roll from the 50s and 60s. It apparently was taken from vinyl, transfered to tape with significant phase issues, THEN burned to CD. I got them cheap... and I got what I paid for. The mono cuts, I'm analizing the channels to find the better quality and using only that channel. The stereo cuts, though, are only fixable b"

Gene Savage, Tulsa, Oklahoma USA

"Ich hatte den Rechner eigentlich zu Testzwecken On-Air geschaltet und wollte ihn nach der Messung wieder herausnehmen. Das ging aber nicht, weil die „Rockies“ inzwischen den neuen Sound auf der Antenne gehört hatten. Der Sound ist ganz anders als Orban, Omnia & Co.. Alles klingt entspannt ...und natürlich aber extrem druckvoll. Das Schlagzeug verschwindet nicht im Hintergrund und das macht Freude!"

Wolf Stahl, ROCKLAND (Germany)

"Joh, ik heb dr verdomd weinig verstand van, maar dat ding klinkt verrekte lekker"

Lex Harding, LX Classics