Used Supro S6422 THUNDERBOLT MKII Tube Guitar Combo Amp

Looking for vintage tone with modern versatility? This used Supro S6422 Thunderbolt MKII tube combo amp is in great condition and delivers classic American tube sound with updated features. Equipped with a 15-inch speaker and powered by two 6L6 power tubes, this 35-watt combo offers three distinct output modes—Thunderbolt (35W), Hi (45W), and Lo (15W)—for flexible stage or studio use. The Thunderbolt MKII’s simple Volume and Tone controls make it easy to dial in rich, responsive tones ideal for blues, rock, and more. With rugged construction and vintage-correct aesthetics, this amp blends style and performance. Whether cranked for sweet overdrive or played clean with pedals, the Thunderbolt MKII is a boutique powerhouse ready to inspire.