Legacy Spider III 15 amp Combo The Line six Spider III fifteen guitar combo amplifier is a fifteen watt solid state guitar amplifier with built-in amp and effects modeling. It's a good samll amplifier for a starting guitar player, and makes a great home practice amp for more experienced players.Spider III fifteen Features 4 Essential Amp Models (Clean, Crunch, Metal, Insane)6 Smart Control FX Effects (2 simultaneous) including phaser, Chorus/Flanger, Tremolo, Sweep Echo, Tape Echo, and Reverb4 User-programmable channelsCD/MP3 input jackHeadphone/Direct Out for practice or recordingCustom 8-inch Speaker15-Watt MonoDimensions