diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index f82c2ab809c1df006466e7fad28fa0cfe303667f..d280978564e849d40fee03a0f9707c5e5176d50f 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1672,6 +1672,14 @@ void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
 	    && (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
 		msleep(20);
 
+	/*
+	 * Plantronics C320-M needs a delay to avoid random
+	 * microhpone failures.
+	 */
+	if (chip->usb_id == USB_ID(0x047f, 0xc025)  &&
+	    (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
+		msleep(20);
+
 	/* Zoom R16/24, many Logitech(at least H650e/H570e/BCC950),
 	 * Jabra 550a, Kingston HyperX needs a tiny delay here,
 	 * otherwise requests like get/set frequency return