• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

Vintage MC75 vs. 60th Anniv MC75

MX117.MC7150

MX117.MC7150

Listener
Subscriber
The original MC75 has four (4) small signal tubes while the 60th Anniv reissue MC75 only has three (3) small signal tubes. Does anyone know what the difference is based on? Why does the original have 4 while the reissue gets away with 3? Thanks.
 
Register to hide this ad
MX117.MC7150 said:
The original MC75 has four (4) small signal tubes while the 60th Anniv reissue MC75 only has three (3) small signal tubes. Does anyone know what the difference is based on? Why does the original have 4 while the reissue gets away with 3? Thanks.
Click to expand...

Different design and tube characteristics. Original 75 had 12AX7 => 12AU7 => 12BH7 => 12AZ7 => (2) KT-88s or 6550s

New amp follows basic technology of re-issue 275s but without the 1/2 preamp unbalanced input; 12AX7 => (2) 12AT7s => (2) KT-88s
 
You must log in or register to reply here.
Back
Top Bottom