Preamp Deal of the Century

Hi Fiddler. To employ the 7193 in the chardonnay one would have to drill a hole beside each tube socket to accommodate the wiring to the caps . Probably not so good if you ever wanted to sell it. I run my wiring up through the extra tube socket of my cortese as mine is configured for a pair of single triodes/channel as opposed to the single socket dual triode 6sn7 versions . Another way would be to run the extra wiring down from the bottom of the chassis and up the sides if you want to give it a try.The good thing here is the operating points of this family of single triodes [6j5,6c5,6p5,2c22,7193 etc] are the same as the 6sn7 whereby no modifications are necessary to the circuit of the 6sn7 based suprateks. Perhaps you might want to try a 6j5, 6c5, or the 6p5 first as they don't require the grid caps, the wiring change is relatively very simple and would certainly allow you a lot more flexibilty with your gain. The round plate versions of the 6j5 and 6p5 vacuum tubes as well as the 6c5 meshplates sound better than all of my 6sn7's. Trying a few of them first will certainly allow you to hear the voice of this tube family. As mentioned,the 7193 and the 2c22 need a pair of top caps per tube. These top caps a very difficult to source nowadays and it is imperative that they fit snuggly on the contacts of the tube. Not recommended for those with children or pets. You are more than welcome to email me off line for more imfo.

Hi Fiddler

You wrote: "I have the gain on the "low" setting on my Chardonnay and I still can't turn the volume up past 9 o'clock."

Please help me understand why it is important to be able to turn the volume past 9 o'clock? My system sounds best with the Chardonnay set to the "high" setting and I hardly play beyond 9 o'clock.

Fiddler - where did you purchase the Mundorf Silver Supremes? Were the cap values clearly indicated on the caps or did you have to get that info from Mick? Thanks.

Ethifi - picture the signal your speakers recieve as a 3-way pie chart composed of source signal, preamp signal, poweramp signal. the higher you are able to turn up the volume on the preamp then the more you hear of the preamp and the less you hear of your source and poweramp (relatively speaking). whether this will sound better or not is a matter of system synergy and listner preference.

Jazzdude,

Sorry for the delay.

I purchased the Mundorfs from Madisound.

I can't remember if the cap values were on the stock caps or not. The stock caps were two small square caps about the size of a box of matches mounted on their sides. They are wired on one end from another larger, square cap and wired to the tube socket on the other end. They are located in the very front of the preamp.

As I recall Mick gave me the original location and value of the caps. They are 1 uf caps.

Mick could probably give you better info than me :o , but the difference in my Supratek is staggering by just replacing these two caps.