Class A, 6SN7 pre amp with zero feedback

Can someone recommend a Class A, 6SN7 pre amp with zero feedback, HexFred diodes and high quality caps???

tz708-18-2012 2:00am

atmasphere Details Discussions Posts This discussion Message User 11,567 posts 08-20-2012 at 03:34pm Copy Comment URL Report Comment Edit Delete The 12AU7 and 6CG7 have very similar characteristics to the 6SN7, in fact the 6CG7 is the exact same plate structure as some NOS 6SN7s. But 6SN7s usually sound better, I think its because of the base, which is less microphonic.
kiwi_1282001 Details Discussions Posts This discussion Message User 312 posts 08-20-2012 at 01:37am Copy Comment URL Report Comment Edit Delete Cary's SLP-05 fits the bill, though sans HexFred - which can be DIY fitted. The SLP-05's off-board power supply with its rectifier tube is the icing on the cake.
franks Details Discussions Posts This discussion Message User 151 posts 08-19-2012 at 09:13pm Copy Comment URL Report Comment Edit Delete Atma-Sphere MP 1 Any reason for the 6SN7 requirement? There's a lot of great preamps that don't have the 6SN7 as the prime tube.
franks Details Discussions Posts This discussion Message User 151 posts 08-18-2012 at 09:28pm Copy Comment URL Report Comment Edit Delete Atma-Sphere MP 1 Any reason for the 6SN7 requirement? There's a lot of great preamps that don't have the 6SN7 as the prime tube.
triode Details Discussions Posts This discussion Message User 263 posts 08-18-2012 at 07:45pm Copy Comment URL Report Comment Edit Delete You can order Cary SLP-98 that way (see for example Upscale Audio's options - no affiliation, just a happy customer). Not sure about SLP-05.