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Old 23rd February 2010, 03:27 PM   #11
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Gentleman:

I have spoken to John, and hopefully the moderator will allow him to immediately post details today. He has already registered... and I'll let him give the details.. be patient...And yes these are Julie Research Labs.. I saw them, and internally they are crystal clean.

A....


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Old 23rd February 2010, 03:31 PM   #12
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We will keep an eye on the q. Hopefully the delay won't be too long. Please tell him that everyone goes through this, no one is immune, not even my mother.
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Old 23rd February 2010, 03:45 PM   #13
Zen Mod is offline Zen Mod  Serbia
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send me a pair of 511B , and I'll find a way that your Ma write here whatever and whenever she wants .......

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Old 26th February 2010, 05:20 PM   #14
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Default Information on Optimation Lab Amplifiers

Henry Wolcott, designer and manufacture of the prestigious "Presence 220" Tube Amplifier also designed a Laboratory Grade Amplifier for Primary Calibration Laboratories. It is called the Optimation PA-250. The Quality and Specifications were in such a league of their own, the U.S. Bureau of Standards (now NIST) bought several for their Primary Labs. There are several versions of over a thousand PA-250's manufactured. The most common is the PA-250H, inwhich a 15 Ohm Output can be used into 16 Ohm Speaker Loads. The Rare and more sought after Optimation Amplifiers, we have only a limited few left for Audio is the model PA-250AC. It's 3.75 Ohm Output, can be used into 4 Ohms, 250 watts of ultra-low distortion power. The Frequency Response extends out to 100,000 Cps! An Isolated Output with essentially Perfect Regulation Characteristics is provided along with absolute Output Stabiltiy even under worst case loading conditions. This unsurpassed combination of performance parameters has been made possible by use of a patented hybrid circuit utilizing eight blowercooled output vacuum tubes (6CA7), unique balanced positive and negative feedback circuit and a sophisticated output transformer design. Other attractive features include front panel metering of output voltage, output current and individual power tube condition! For more information, I welcome You to phone or email me. John Lion (559) 255-9096 LionElectronicLabs@BigPlanet.Com
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Old 26th February 2010, 05:36 PM   #15
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What is the asking price?
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Old 26th February 2010, 06:07 PM   #16
Glowbug is offline Glowbug  United States
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I'd be very curious about the price
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Old 26th February 2010, 06:12 PM   #17
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Hello Cal, The price for our Optimation PA-250AC is $10,000.00 U.S. Dollars with special matched/aged tubes. Buyer is responsible for all freight expenses and insurance. For export, buyer is responsible for customs. Email for more details. Best regards, John Lion
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Old 26th February 2010, 07:28 PM   #18
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Quote:
Originally Posted by Lion Labs View Post
Hello Cal, The price for our Optimation PA-250AC is $10,000.00 U.S. Dollars with special matched/aged tubes. Buyer is responsible for all freight expenses and insurance. For export, buyer is responsible for customs. Email for more details. Best regards, John Lion
Is that for a pair?

jd
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Old 27th February 2010, 05:45 AM   #19
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Greetings JD, The price is for each. I forgot to mention, these PA-250AC's are Late Production once sold by Julie Research Laboratories (JRL). Upon removing two face screws, lowering the face, it is obvious these were built in conformance to Mil Spec. Using a HP204C for an input & German Prema Model 6048 Digital Multimeter (8.5 Digits) to measure the AC Output, the PA-250AC is clearly conservatively rated. By the way, my compliments to the German's, who designed Prema 6048 DMM, we use in our Primary Cal Lab. Best regards, John Lion
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Old 27th February 2010, 08:24 AM   #20
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wow!!
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