Fender's '57 Custom Twin-Ampā¢ is inspired by the original "low-powered" tweed Twin platform and comes equipped with 5E8A circuit powered by two 12AY7 and two 12AX7 preamp tubes. Smooth-sounding bass, treble and presence controls sculpt your sound while a duet of 6L6 power tubes generates 40 watts of power to add natural tube compression to your tone. In addition, two newly designed 12" EminenceĀ® Special Design alnico speakers replicate the subtlest playing nuances.