For sale is a used TC Electronic Flash X4 Delay Pedal. Listed at $150 obo. Local sale only, no trades. For the solo performer, comprehensive loopers like the TC Electronic Flashback x4 are key. This stereo stompbox can act as a digital delay, with plenty of TonePrint options and 15 modes, or a full on looper with the ability to store and cue multiple 40 second sections.