Denon DN-2000F/DN-2500F via USB : Introduction

Denon DN-2000F mk III

Back in the 90’s, DJs used vinyl and CDs. One of the most popular DJ CD players was the Denon DN-2000F. This CD player really was a work horse and Denon further improved it with the mk II and mk III models.

There was also the Denon DN-2500F which added extra cool functionality to that of a DN-2000F including key control, up to +/- 16% pitch control, sampler, vocal reducer and brake effect.

Denon DN-2500F

As time went on and technology progressed, CDs were to be replaced by laptops and MP3s. Whilst this is a big convenience factor it was never going to beat the look and feel of a DJ CD player. Some DJ software can utilise these CD players through special sine wave recorded CDs which can be interpreted in the software to deduce the track position and pitch, but not only is the solution prone to problems, it’s also costly.

What if it was possible to interface with the Denon DN-2500F remote directly?

Here’s a preview of what’s been achieved so far:


The protocol which the DN-2500F uses has been sussed and now it’s a case of deciphering the commands.

6 comments on “Denon DN-2000F/DN-2500F via USB : Introduction

  1. Adrien 27th January 2016 3:03 pm

    I am very interested by your work.
    Do you have others demos?
    Can the denon remote can control a software…?

    Thank you for your answer.


  2. Walter 23rd January 2019 4:09 pm

    Hello! I would like to know if you continue with the project and if you can operate the Denon 2000 mk2. I own one years ago and would like to make it work with some program virtually. Regards!

  3. Danilo Suarez 16th June 2019 5:56 am

    can it be connected direct to usb to ttl module CH340 and connect it to pc? i will use it to control denon cdj software to play mp3 music on my pc.

    • Pete 5th July 2019 10:31 pm

      The signal from the remote is RS-422 so you’ll need to convert the signals to TTL and then serial to USB. A quick look at the CH340 datasheet suggests you should be able to pump straight to the inputs. I’ve not got a CH340 myself so will get a few and test.

  4. Leo Kearns 6th January 2024 12:37 am

    Hey Pete,
    Try one of these.

    The USB-RS422 cables require USB drivers, available free from, which are
    used to make the FT232R in the cable appear as a virtual COM port (VCP). This then allows the user to
    communicate with the USB interface via a standard PC serial emulation port (for example TTY). Another
    FTDI USB driver, the D2XX driver, can also be used with application software to directly access the
    FT232R on the cable though a DLL. This is illustrated in the Figure 1.


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