Feedback (The good kind ) !

Thanks for the great work on the Fisher 400cx2.  It has brought new definition to the Zu Definitions IV.  Following the power supply rebuild, ground scheme improvements, recapping with Super Caps, and flawless build of the Gold Point attenuator/power switch this is one of the finest vintage preamps I have ever heard.  I try to shy away from the audiophile adjectives because I have a hard time finding much meaning in them, but this baby is musical with explicit definition.  Midrange expression is phenomenal and nothing is lost at the extremes.  I would put it up against just about anything (within reason of course) and am confident it could hold its own, particularly the phono stage.  Great job, money well spent.


I really enjoy improving the performance of the classics

Dr. Tubeology


MC30 Rebuild Project Part 2

So far we have the new McIntosh Mc30 chassis re-chromed, the MC30 transformers and base plates painted with gloss black automotive paint and now we have the first of 2 stuffed circuit boards all ready for final installation.

I have used Teflon coated silver aircraft wire which is a much higher quality than the original. All the resistors are hand picked to be less than 1% of tolerance and in most cases they measure exactly as the schematic says they should.

The black cap’s you see on the board are Solen’s made in France.

McIntosh Main Board Old and New

McIntosh MC30 Main Board old and new


this is why you should not use Chinese caps in your amps or just about anything…

cheap does not = good caps

failpacitor – look what is inside of this electrolytic

A special audio experience “The Classic McIntosh C20”

Pictured a McIntosh C20 pre-amplifier. Note the full compliment of Telefunkin tubes all NOS test! It came in with an intermittent noise in both channels. A few caps later along with some proper contact cleaning and a bit of “Tubeology” work with selection/match of the Telefunkin’s and our proprietary tube socket and pin contact enhancing process (DNA) It’s sounding  stunning! In audiophile terms, “fast, transparent, detailed, deep and layered sound-stage, engaging”front of 20c mcintosh pre-amp

The “SpinZone” Pas3x ….Fun on a Saturday

Pictured is a Pas3x that I have been doing some tweaks on for a customer. I have built a new power supply, added a few “designer” audio caps..some magic “Tubeology” dust .. sounds darn good..I needed a distraction from the everyday service work.. so its a Lazy Saturday project and I’m spin’n vinyl .. remember that?.. Let me tell you its refreshing the sound is much more real then digital.

“What’s Go’n On!”

I thought it would be fun just to snap some action pictures of work around the shop today. November 4, 2011..How good are you at guessing what you see in the photo’s?.. Components, Test Gear, Etc.. Do you think you know vintage audio? If you name all of the audio/stereo/tuners/components.. you can win? win what you say?.. a feature about you and your audio system right here in the main “Blog” you can show all your buddies! cool right?.. well…get started..I will post comments as they come in..5000 plus visitors a month will see your name up in lights!

Most of all have fun!

“Pat” the “Tubeology” Guy

 PS: you can click on the pix’s and enlarge..