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Introducing The Elliott Studio Arts
66-100
Stereo Vacuum Tube Power Amplifier

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Here's what people are saying about the 66-100:

"No matter which source or preamp I used, the sound of the ESA Sixty-Six was holistic, rich and dimensional with a remarkable sense of focus. I hadn't had a tube amp in hand for some time and found the Sixty-Six to be a pleasant surprise after living with solid state, particularly in the bass: it was quicker and tighter than I had expected.."

-- Clement Perry, Publisher / Editor Stereotimes.com (see review)

"I was impressed with the audio quality of the Elliott 66-100.
Warm, clean, beautiful sound. I noticed the difference immediately. It took my system significantly higher in listening pleasure." 

-- Scott Areman (audiophile), Scott Areman Photography

Here's what I say about the 66-100: (of course I'm biased, I build them!)

A real powerhouse, this amplifier has a transparent quality that combined with it's bouncy drive and excellent bass control makes for a truly musical experience.  This no-nonsense amplifier will deliver all the musical finesse that an audiophile / music lover would expect from a tube amp.  Works great with more difficult loads due to it's low output impedance and high current drive (for a tube amp).  Higher sensitivity speakers will reveal its transparency and ultra low noise.  You'll hear detail and layers within the recording, stable imaging and powerful rhythmic drive.  Excellent with rock, jazz or classical music.


Features and Specifications
*100 Watts per channel into 4 ohms, 20-20,000 Hz power response
*Distortion @ 1KHz, 100 Watts  / 4 ohms: THD .889%, THD+N .895%
*Unbalanced RCA or optional balanced XLR inputs
*Optional Triode / Ultralinear switch (60 Watts triode mode)
*All point to point with over-specified hand matched parts and high-temp wiring
*Custom wound power and output transformers
*Choke coupled power supply w/ computer grade 'big can' caps
*Built in cooling fan with optional high speed operation for heavy duty use
*Built in bias adjustment setup w/ meter and switch
*Rugged precision steel chassis and engraved aluminum face plates
*Ultralinear mode output stage w/ local and nested feedback
*Low global feedback for lively sound
*Class AB operation, biased heavily into class A under 5 watts
*Tube Compliment: 4ea. 6550(standard)/KT88/KT90, 4 ea. 12AU7A
*120V / 60Hz standard - other line voltages available upon request -
*60-second B+ delay for high voltage to extend tube life
*65 lb. shipping weight
*5 year limited warranty on parts and labor (not tubes) -


**Click here for specifications and performance data**
 
Click here to see owners manual

Click here to see construction photos


The circuit is (loosely) based on the classic Williamson circuit. It features custom wound ultralinear output transformers in a low global feedback, low gain, low distortion and low output impedance topology. The parts are over-specified for longevity.  The power supply is overbuilt with computer-grade 'large can' caps, filter choke, high-speed bypasses, solid state rectification and a huge power transformer for very stable regulation. The design has proven to be very reliable- the prototype has been running in my reference system for over 2 years on the original set of tubes; in fact, it is frequently pressed into service as the main amplifier in a PA system which I use for small events such as wedding receptions, talent shows etc.  This amp will rock the house and sound pristine while doing so! 

Each unit is built to order and can be customized with choice of:

*Triode / Ultralinear switch .....................................  Add $150.00
*High speed fan operation for heavy duty use ...........  No charge
*Balanced inputs ....................................................  Add $100.00
*KT90 output tubes ................................................  Add $100.00
*Color of LED (blue, red or green) ...........................  No charge

PRICE: $3900.00* (free shipping in continental US)

All units are hand built personally by me, burned in and auditioned in my reference system for 1 week before shipping.  All units ship with frequency response and distortion plots. Ships in sturdy carton with custom foam inserts.

*Washington State residents pay 9.5% sales tax.

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Stereotimes 2009 Publishers Choice "Most Wanted Component"
-See review by Clement Perry