Lalit, a point to keep in mind is that the input impedance of your Modwright amps is specified as "Min. 15K at 50Hz; 23K at 1Khz." While it's not made clear in the manual if that applies to the unbalanced input or the balanced input
or both, some tube preamps will not perform at their best when driving impedances that low. Including the Calypso you mentioned in your initial post.
Atmasphere preamps, however, will certainly have no trouble dealing with such an impedance.
Good luck. Regards,
-- Al
Atmasphere preamps, however, will certainly have no trouble dealing with such an impedance.
Good luck. Regards,
-- Al