Line 6 99-010-4305 Guitar Combo Amplifier Line 6 Spider IV 15 15-watt (mono) guitar amplifier boasts industry-leading Line 6 amp and FX modeling, dialed in tones and presets inspired by rock stars, and much more. 4 dialed in amp models provide sparkling clean tones, warm jazz tones, syrupy drive tones, high-gain distortions, and more. Spider IV 15 features a built-in tuner, a headphone output, a CD/MP3 input, and 4 user-created presets for instant recall of custom tones. The 8" custom speaker and three-quarter closed-back cabinet provide a tight, punchy response.