To identify and know if there's enough power for your pedalboard, will depend on the power requirements for all pedals that are connected to the BCB-90X daisy chain and power supply.
The following info also applies to the BCB-30/X and BCB-60, BCB-90X, which all include power daisy chains and Roland BOSS PSA/PSB 9V power supplies.
The typical Roland BOSS 9V power supplies used are:
- The PSA-S/S2 500mA 9V, filtered and regulated, center negative/sleeve positive, smaller power supply.
- The PSB-1U 2000mA 9V, filtered and regulated, center negative/sleeve positive, larger power supply.
You'll want to make sure the sum of the current draw (mA) for all your pedals, is less or equal to, the current that is supplied from the Roland PSB-1U, which is 9v AC using, 2000mA (2A) output.
Use a 9V power supply that provides at least the same amount of mA or more, each pedal will pull the current mA that it needs. It is okay to use a power supply with more current (but NOT more voltage) than the requirements of the pedal.
If you do experience errors in operation of your pedals or some erratic/unusual behavior, this might indicate that that specific pedal may need its own isolated PSA power supply, for example, using the BOSS PSA-S/S2 or other manufacturer recommended power supply.
WARNING NOTE: Unfortunately, we can only guarantee proper pedal functionality and behavior with our recommended PSA and PSB power supplies and/or recommended, brand-new dry alkaline batteries.
The usage of any 3rd party other brand power supply, will void all Manufacturer Warranty terms for the BOSS pedal.
If you have other pedals that require a higher amount of voltage, such as 18v or 24v, we recommend you use the appropriate power supply for that pedal separately of the BCB-30/X, BCB-60 and/or BCB-90X daisy chain and PSB-1U power supply.
You can check any BOSS pedal Current mA draw, by looking at it specs, in the included Owner's Manual, or online on the BOSS GLOBAL websites:
For example, DS-1 Specs are found here: