Redrum is the drum machine in the Reason rack. It has ten channels that can play one aiff or wav sample each. Whole drum kits can be saved as Redrum patches.


Redrum is a drum machine with a built in pattern sequencer. It has ten channels that plays samples loaded by the user or sounds from a preset drum kit. In addition to the pattern sequencer, Redrum can also be played from Reason's main sequencer or via MIDI. By combining the pattern sequencer and the main sequencer you can easily create fills and variations to the patterns without having to create new patterns for every variation.

The Channels

Redrum Channel

Here is an example channel. The channels differ slightly (see below). At the top there are three play control buttons. The Mute button mutes the channel and the solo button mutes all the other channels. The play button works as a simple preview button and plays the loaded sample when pressed.

Next, there is a display that shows the loaded sample and buttons to browse and load samples.

Each channel has two effect sends that are routed to the drum computer's two effect send outputs. This is a great way to add effects to some drum sounds without having to use up mixer channels.

The pan control does what pan controls normally does.

The level control sets the volume of the sample and the velocity control sets how velocity will affect the sample's volume.

The decay control sets the decay time. You can choose from a fade out or a gate type decay.

The pitch control is used to set a new pitch to the sample if desired.

The channel on the picture has settings for velocity control over the sample's tone that lets you apply filtering to a sound depending on the velocity. This option is available in channels 1, 2 and 10.

Channels 3,4,5 and 8 and 9 have a setting for how velocity will affect the sample's starting point instead of the filter control.

Redrum controls - pitch bend

Channels 6 and 7 have settings for how velocity will affect pitch and pitch bend. This is a very useful feature for conga and tabla type sounds.


Redrum's programming uses the same kind of step programming as in ReBirth's drum machine. You select the channel to program and enter which steps you want it to play at. Each step can have one of three velocities: Hard, medium or soft. A separate flam option let's you enter flam at any velocity.

Redrum uses patterns that can be between 1 and 64 steps long. The pattern sequencer can be set to run faster or slower than the main sequencer's tempo - in fact it can run 16 times as fast or 1/16 of the original tempo. This means that you can change the resolution of the pattern. By making a pattern 32 steps long and setting the pattern sequencer to run at double tempo, you have created a pattern with 32nd notes. A nice features for those into fast snare rolls etc.


Redrum has two built in effect sends with send controls for each channel. This is a great way to add effects to drums without having to use up channels in the mixer (of course, this is Reason, so if you run out of mixer channels - just add a new mixer!).

There are basically two ways to use the effect sends. The default way is to use the Redrum effect sends chained to the Reason mixer. Chaining effect sends means that more sounds sources uses the mixer's effect sends as seen in the picture. Here you can see the Redrum effect sends chained to a mixer.

The other way to use the effect sends is to use separate effects for the Redrum.

Sometimes you may want to use insert effects on the drums, say a distortion effect to the snare or a flanger on the hihat. To do this, you can use the separate outputs for each channel to add any effect you want to any channel. On the picture on the right you can see the outputs available for each channel. Also notice the gate out & in that you can use to trigger other devices with the Redrum, or to trigger Redrum sounds from other units. There is also a pitch control voltage input for each channel.

Dial R for Redrum

Play Kong with Redrum5:52