I am much more favorably inclined towards removing capacitor covers than some of the above posts. The audible consequences are not insignificant and cumulative. If the desired effect is not achieved, it is always possible to experiment with various damping techniques for tuning: C37 lacquer, Sorbothane, EAR ISODAMP, acrylic shells--I have even seen nuded capacitors attached to violin bridges.
Sean, which 47 Labs products have you seen measurements for? Are you referring to the Stereophile measurements of Gaincard or other measurements of other products? And, one last question: Were proper testing techniques used? I ask, because, in the measurement of integrated circuits, it is very easy to come up with erroneous results, esp. when comparing integrated amplifiers to discrete amplifier designs.
Sean, which 47 Labs products have you seen measurements for? Are you referring to the Stereophile measurements of Gaincard or other measurements of other products? And, one last question: Were proper testing techniques used? I ask, because, in the measurement of integrated circuits, it is very easy to come up with erroneous results, esp. when comparing integrated amplifiers to discrete amplifier designs.