gentlemen:
i have had repeated discussions with chuck hinton about the design of the circuits in the 275 amp and c 200 preamps.
his comment is that the design of the tube circuit makes both amp and pre amp tube insensitive. i have had the c 200 preamp for several weeks and tried 4 pairs of 12ax7, namely, rca 12ax7 grey plate, rca 575a black plate, mullard 12ax7, tungsol 12ax7 and sylvania 12ax7. differences were very slight.
i have not yet experimented with my 275 mark v.
there are 2 types of errors in listening. one may hear something which is not there or fail to hear something that is there. i am very puzzled, as i am very sensitive to the upper mid and lower treble frequencies.
i have had repeated discussions with chuck hinton about the design of the circuits in the 275 amp and c 200 preamps.
his comment is that the design of the tube circuit makes both amp and pre amp tube insensitive. i have had the c 200 preamp for several weeks and tried 4 pairs of 12ax7, namely, rca 12ax7 grey plate, rca 575a black plate, mullard 12ax7, tungsol 12ax7 and sylvania 12ax7. differences were very slight.
i have not yet experimented with my 275 mark v.
there are 2 types of errors in listening. one may hear something which is not there or fail to hear something that is there. i am very puzzled, as i am very sensitive to the upper mid and lower treble frequencies.