In a physics laboratory, a student sets up two different simple harmonic oscillators. The first setup consists of a block of mass \(M\) attached to a horizontal ideal spring with spring constant \(k\), oscillating with an amplitude \(A\) on a frictionless table. The second setup consists of a block of mass \(2M\) attached to an identical spring, oscillating with an amplitude \(2A\). What is the ratio \(E_2 / E_1\) of the total mechanical energy of the second setup to that of the first setup?