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Congratulations from BK Butler  

 

Please accept my sincere thanks and congratulations for making your 
musical choice my hand-made “

MONAD”

 A100 amplifier.  This new 

USA-Patented

  technology is an inherently classic design. 

 

Definition: 

MONAD:  “The ineffable source of all being and existence.  Singly 
superior to all others yet fully known only to itself”… 

 

After more than 25 years of tube audio experience in the Professional 

Music Industry with some of the world's greatest musical talents, I’ve 
created an entirely new type of tube audio amplifier.  Utilizing the 

incomparable qualities of our proprietary audiophile-grade 300B 
power triode in SE Class A mode, an amplifier without equal has been 

achieved.  Producing more than 100Watts RMS of power with 

ZERO

  

negative feedback and greater than 2 Farads (2,000,000 uF) of 
primary Class A voltage supply filtering on board, the 

MONAD

 rightly 

becomes the new vacuum tube audio standard of the industry.  
 

The Past is the Future

u

 

 The 

MONAD

 A100 incorporates the finest application of the pure 

"Edison Effect," or the 

essence

 of Thermionic vacuum tube emissions 

to produce every nuance and characteristic of the best classic SE 

300B triode tube amplifiers at more than 10 times the previous 
usable power.  With painstaking efforts and great attention to detail, 

the sonic response, load and transfer characteristics of the classic 
300B power triode tube have been carefully balanced to operate 

under optimum conditions at extremely useful and satisfying power 
output levels. 

 
This groundbreaking design completely eliminates one of the most 

inefficient and non-musical components in typical 300B SE amplifiers: 

the Output Transformer.  Without hundreds of feet of phase-shifting, 
musicality-robbing wire and many pounds of induction-generating core 

iron to overcome, my newly patented current-multiplying DC coupling 
circuitry allows the 300B output driver tube to directly operate into a 

fixed ratio-reduced speaker output load.  This novel design results in 
the production of authentic triode tube characteristics many times 

greater in power than the normal capability of 300B tubes yet all their 
superior musical qualities are retained. 

    
I invite you to enjoy the finest 300B SE amplifier on the planet.  The 

CNC casing has been precision machined from the finest billet 

aluminum.  Over 100 hrs. were spent on the machining, fit and finish of 
the case alone.  The 

MONAD

 A100 is truly the result of a painstaking 

labor of love for the art.   It has been my pleasure to design and build 
this finest of amplifiers for you. 

 
Sincerely,  

  
BK Butler, Designer and Builder 

Summary of Contents for MONAD A100

Page 1: ...TUBE DRIVEN MONOBLOCK POWER AMPLIFIER UTILIZING b T H E R M I O N I C VACUUM TUBE TECHNOLOGY Concept Design B K Butler HAND BUILT Patented in the USA Worldwide patents pending Monad Tube Driver Tube Driver Blue and Thermionic are trademarks of or patented by BK Butler ...

Page 2: ...put Protection 2 Use and Operation Front Panel Power Switch Rear Panel Remote Jack 3 Inputs Speaker Output Binding Posts Speaker Phasing Remote Operation 4 Specifications 5 Cable Quality The Marvelous Vacuum Tube 6 Tube Reliability 7 Warranty Repair Policy 8 ...

Page 3: ...more than 10 times the previous usable power With painstaking efforts and great attention to detail the sonic response load and transfer characteristics of the classic 300B power triode tube have been carefully balanced to operate under optimum conditions at extremely useful and satisfying power output levels This groundbreaking design completely eliminates one of the most inefficient and non musi...

Page 4: ...e of 120VAC nominal input line voltage with a minimum current supply of 5A is required 230 240 VAC models require approx 50 of the current rating of 120V models Protection Listed below are the various types of internal protection provided for unexpected conditions 1 AC input fuse for protection against any major system power fault Do not replace with a fuse of higher current rating 2 Thermistor pr...

Page 5: ...ON IS RECOMMENDED IMPORTANT COOL OPERATION LONGEST LIFE AND RELIABILITY DO NOT OPERATE WITHIN A COMPLETELY CLOSED CABINET OR ENCLOSURE WITHOUT POSITIVE FORCED AIRFLOW LET YOUR AMP BREATHE Use and Operation Important Do not apply power until you have read and understand this section Connect or disconnect cables only with amplifier OFF Note Your new Butler MONAD amp is designed to operate with ONE s...

Page 6: ...e performance and sound quality of this amplifier is worth it Speaker Output Binding Post A top of the line Rhodium Gold plated Cardass heavy duty 5 way binding post is supplied to accommodate virtually any type of speaker connection Speaker wire should be kept as short as possible and away from input cables Shielded cables must NEVER be used as this may cause high frequency loss and introduces an...

Page 7: ...ly used by the FAA to test and analyze radar tubes for aviation control towers This old but very high quality apparatus enabled him almost unlimited control to adjust and experiment with virtually every conceivable parameter of any tube For example input and output pins could be reassigned B voltages and bias currents switched to any desired value or configuration During these test it was noted th...

Page 8: ...ld last as long as the other high quality electronic components in the design No special tube care replacement matching biasing or maintenance is usually necessary In the unlikely event a tube becomes faulty it can easily be replaced by any generic 300B tube commercially available but for optimum performance we recommend our Butler 300B as replacement Finally the most likely reason you invested in...

Page 9: ...S typical 4 Ohms Frequency Response 20 20 000 Hz 0 6 dB Verified__________ Distortion THD Less than 1 0 at 8 Ohms A Weighted Verified__________ Input Sensitivity 1 7V for 100 Watts into 8 Ohms Verified__________ S N ratio Better than 105dB A Weighted Verified__________ Vacuum Tube Complement Butler Model 300B directly heated power triode Max Power Consumption 6 Amps Dimensions 17 W x 12 5 D x 10 5...

Page 10: ...sed from anauthorized Butler Audio retailer h Any amplifier purchased outside the USA Amplifiers purchased in another country are covered only by that country s distributor and not by Butler Audio Any removal alteration or tampering of the serial numbers or tampering with the inside of the product will result in voiding the warranty Butler Audio reserves the right to determine and make final judgm...

Page 11: ...C U S T O M WWW BUTLERAUDIO COM ...

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