Cronus Zen Bluetooth pairing: the P2 button, why pairing fails, and when a cable is better

To pair a wireless controller to the Cronus Zen, press the Zen's P2 button so its RGB LEDs flash blue, then put the pad in pairing mode: Share and PS on a DualShock 4, Create and PS on a DualSense, the sync button on a Switch Pro Controller or Joy-Con. Xbox pads cannot pair by Bluetooth and need the Xbox Wireless Adapter on A3. What goes wrong is around that: the pad reconnecting to the console, the wrong combo, a pad Cronus lists without Bluetooth support, or an authentication pad that must stay wired. This page has Cronus's pairing steps per brand, the failure list, and the wired-or-wireless choice.

What Bluetooth on the Zen is for

Role	Can be wireless?	Why
Authentication pad on A1 (Xbox, PS4)	No	A1 is a USB port; the authentication controller
The pad you play with	Yes	Cronus's Device panel says anything on Bluetooth reaches the console as whatever the A1 pad reports
The pad on PS5	Yes, with limits	Pairs to the Zen with P2; Cronus lists a DualSense over Bluetooth without adaptive triggers, rumble, gyro, mic or 3.5 mm headset audio
Mouse or keyboard	No Bluetooth	Cronus's older supported-mice list: wireless mice use their own USB dongle; Bluetooth is not supported. Mouse and keyboard
Connection to the console	No	Always wired from CONSOLE/PC
Headset audio through the pad	No	Cronus: no 3.5 mm audio or mic support over a Bluetooth controller connection

Pairing procedure, from Cronus's guide

Step	Do	What you see
1	Console off, or out of range, so the pad has one host to find
2	Press P2 on the Zen, the left Bluetooth pairing button; P1 and P2 are the two large blue buttons either side of the OLED	RGB LEDs flash blue
3	Pad into pairing mode (table below)	Pad light flashing
4	Wait	The pad's lights and the Zen's LEDs stop flashing and stay solid; on a PlayStation pad both turn solid blue
5	Press a button on the pad	The console responds

Pad	Pairing mode
DualShock 4	Hold Share and PS until the light bar flashes
DualSense, DualSense Edge	Hold Create and PS until the light bar flashes. Cronus lists Bluetooth as limited: adaptive triggers, rumble, gyro and mic do not work. Its Switch page lists the DualSense as USB only
Switch Pro Controller	Hold the sync button until the player LEDs flash; they stop flashing and stay solid once paired
Joy-Con	Set the Zen's output protocol to NINTENDO SWITCH first. Press P2 and hold the left Joy-Con's sync button until its player LEDs flash: after a few seconds the Zen's LEDs turn red and the Joy-Con vibrates. Then hold the right one's sync button until it vibrates
PlayStation Move	One at a time: tap P2 and hold the Move's sync button, then repeat for the second
Xbox Series, Xbox One	Not over Bluetooth. Xbox Wireless Adapter on A3; connect the pad to A2 by cable, wait a few seconds, unplug it; the adapter's LED blinks, then turns solid white when the pad is paired

The Zen remembers paired pads until you clear them: desktop Zen Studio's Device panel calls this Clear BT Devices, and Zen Studio Live has a clear Bluetooth action. If the console claims it first when you wake it, see the failure table.

Why it fails

Symptom	Cause	Fix
Pad lights up and the console responds, not the Zen	The pad reconnected to the console, its last host	Turn the console off, forget the pad on the console, pair again
Blue flashes forever	Pad not in pairing mode, or too far away	Hold the combo until the pad's light flashes; pair close to the Zen
Blue flashes forever with an Xbox pad	Cronus lists no Bluetooth support for Xbox pads	Xbox Wireless Adapter on A3; the A2 cable step
Blue flashes forever with a DualSense	Share and PS held instead of Create and PS; on Switch, Cronus lists the DualSense as USB only	Create and PS; on Switch, USB on A3
Pairs, then drops	Low battery; Cronus warns a controller might not charge through the Zen	Charge it or fit fresh batteries
Repeated disconnections after pairing several devices	Cronus says pairings can become corrupt, especially after pairing more than one device	Clear BT Devices, below
Pairs, input is late or stutters	Radio latency plus interference	Cable for timing games; input lag
Pairs, some buttons do nothing	Wrong output protocol for the console	Check the Zen's output setting in Zen Studio
Was paired, now will not	A phone or PC took the pairing	Forget the pad on the other device
No headset audio	No 3.5 mm audio over a Bluetooth controller connection, per Cronus	Connect the pad by USB
A licensed third-party pad will not work over Bluetooth on PS4	Cronus says some need a DualShock 4 v2 AUTH controller on A1	DualShock 4 v2 on A1

Clearing old pairings

Cronus's Clear BT Devices procedure, from the Zen Studio Device panel page in its older guide:

1. Turn off the device you want to unpair. For a controller, hold the Xbox or PS button for 5 to 15 seconds until its LED turns off.
2. In Zen Studio, open the Device tab and press Clear BT Devices. Confirm until the status bar says all registered Bluetooth devices have been cleared.
3. Disconnect all USB cables from the Zen.
4. Pair that device to something other than the Zen. Cronus says otherwise it will keep trying to pair to the Zen and cause disconnections.
5. Use the Zen again, pairing only the pad you want.

Cronus's current guide is built around Zen Studio Live, the browser-based version of Zen Studio, which has the same clear Bluetooth action among its device tools. Update the Zen first if you can: Cronus's changelog says firmware 2.3.2 (18 August 2026) fixed clearing Bluetooth not fully clearing or unpairing a connected device.

Bluetooth versus adapter versus cable

	Cable on A3	Xbox Wireless Adapter on A3	Zen Bluetooth (P2)
Setup	Plug in	Adapter plus the A2 cable step, once	P2 and the pad's combo, once
Latency	Lowest	Lower than Bluetooth, per Cronus	Highest of the three
Controller audio	Supported, with a USB-connected pad	Cronus says wireless loses controller audio	No 3.5 mm audio, per Cronus
Interference	None	Cronus says the adapter uses 5 GHz, where home network traffic can cause disconnects	Shares the 2.4 GHz band with Wi-Fi
Best for	Timing scripts	Xbox pads	DualShock 4 and Nintendo pads

Wired vs wireless controllers on the Zen is the longer version.

Quick reference

You see	First check
Console responds instead of the Zen	Console off; forget the pad on it
Blue flashing, never stops	Pad's pairing mode and distance; Create and PS on a DualSense; Xbox pads need the adapter
Drops after minutes	Battery; Clear BT Devices
Late inputs	Go wired
No headset audio	Go wired