Amazon.com: Stax Looper Guitar Pedal Loop Station Guitar Effects Pedal with Unlimited Overdubs 10 Minutes of Looping, 1/2 time, and Reverse USB Port ,Amazon.com: CKPSMS Brand - 1PCS #36-16 BLINDSTITCH Looper Compatible with/Replacement for Lewis Brand Class 150 Compatible with/Replacement for Union ,Rowin Twin Looper Station Electric Guitar Effect Pedal Loop Station,Amazon.com: CKPSMS Brand - 1PCS #36-16 BLINDSTITCH Looper Compatible with/Replacement for Lewis Brand Class 150 Compatible with/Replacement for Union ,Amazon.com: Stax Loop Station Guitar Pedal, Looper Pedals with Unlimited Overdubs 10 Minutes of Looping, 1/2 Time, and Reverse, Built-in 1G SD Card ,