Home Slickdeals Monoprice: 15-Watt 1×12 Guitar Combo Tube Amplifier with Celestion Speaker & Spring... Slickdeals Monoprice: 15-Watt 1×12 Guitar Combo Tube Amplifier with Celestion Speaker & Spring Reverb for $143.99 after promo code YAY20 with Free Shipping By ARCOM - 28 August 2018 230 0 SHARE Facebook Twitter Go to the deal page: Monoprice: 15-Watt 1×12 Guitar Combo Tube Amplifier with Celestion Speaker & Spring Reverb for $143.99 after promo code YAY20 with Free Shipping