Hi there. Couple questions about the Cornet2:
I am wondering if the specified inter-electrode capacitance of the 12AX7 is integral to the RIAA equalization of the Cornet2. In other words, would a low-capacitance 12AX7 variant like the recent Techtube 813CC not perform properly in the circuit?
Along the same lines, if one were to substitute current sources in place of the the plate resistors on the first and second tube positions, would the output capacitance of the CCSs disrupt the EQ?