With a unique circuit design that offers a fresh take on high-gain amplification, the Dr. Z CAZ-45 tube amplifier head delivers dynamic, expressive tonality at any volume level. The CAZ-45 was conceptualized by Dr. Z, who aimed to deliver "a high-gain amp without sacrificing the touch dynamics, tonal versatility, and hand-wired craftsmanship." Amp designer Alan Phillips (Carol-Ann Amps) was tasked with coming up with an all-original circuit — that's right, the CAZ-45 features no re-creations of classic amp circuits. The result is a ferocious amp that delivers on Dr. Z's promise. There is plenty of gain available — and gorgeous clean tones, too — with an exceptionally dynamic response, and the ability to achieve that feel and tonality at any volume level.