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4-Play™ Using & Applications


At its most basic form, the 4-Play is a 1-in, 4-out direct box that lets you route the connected instrument to any of four different channels on the PA and in your monitors. This allows each instrument to have its own dedicated channel with individual level, EQ and effects. Only one input is used in order to eliminate cable spaghetti on stage. You simply mute the 4-Play, change the instrument, select the desired output and you are set to go.

Making Connections

Before making connections, it is always best to turn audio system levels down in order to prevent plug-in transients that could damage more sensitive components, such as high frequency drivers. It is also a good idea to test at low volumes before turning up. This way, should a cable not be properly seated, making a live connection will be safer.

Connections from instruments to the 4-Play input is done using standard ¼" coaxial cables. The outputs from the 4-Play to the PA system are typical XLR connections wired to AES standard (pin-1 (ground), pin-2 (+) and pin-3 (-)).

Powering the 4-Play is done using a standard 9V Boss®-type power supply. These are readily available at all music stores. You can also power the 4-Play using a multi-output pedal brick. Be careful to ensure you are using the proper voltage and polarity (center-pin negative). A power supply cable lock is there to protect against accidental disconnection. Merely unscrew the lock using a hex driver, insert the power cable through the cavity and then retighten.

Note: There are two ‘set & forget’ switches on the two front corners. These are used to enable the selection of outputs 3 and 4 respectively. For now, these should be set in the out position.

There is no power switch on the 4-Play. As soon as you connect the PSU it will spring to life and OUT-1 will be activated. The OUT-1 LED will illuminate to confirm the active output.

  1. Press the MUTE footswitch to turn off the outputs.
  2. The MUTE LED will illuminate to let you know the outputs are muted.
  3. Connect your first instrument to the 4-Play using a standard ¼" coaxial guitar cable.
  4. Connect OUT-1 to the first channel on your PA system via XLR cable.
  5. Depress the MUTE footswitch to reactivate the outputs and slowly increase the level on the PA to test.

If all is good, mute the 4-Play and connect OUT-2 to your second channel. You can test using the same instrument or switch to another if you like. Depressing the SELECT footswitch will now toggle between outputs 1 and 2. If you plan to use OUT-3 and OUT-4, these must be enabled using the two ‘set & forget’ switches located on the front corners. When pushed in, these switches allow the selector switch to advance to the third and fourth outputs and illuminate the associated LEDs.

Set & forget switches allow outputs 3 and 4 to be activated using the SELECT footswitch.

Lifting the ground

The 4-Play is equipped with ground lift switches on each of the four outputs. Set all of the ground lift switches in the down or grounded position. As you rotate through your instruments, if you notice any noise, try lifting the ground as this can often help remove buzz and hum caused by ground loops.

Connecting a tuner

The 4-Play is also equipped with a tuner output, along with a 3-position tuner assign switch that allows you to choose when this output is active. When the tuner assign is set to ALWAYS ON, the tuner will still be active even when the mute switch is engaged. When set to ON W MUTE, the tuner output will only be active when the mute switch is engaged, allowing you to mute the instrument output to the PA when you want to tune up. The OFF W MUTE setting will do the opposite, allowing the tuner to remain on until the mute switch is engaged.