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Introduction

 

 

Thank you for your purchase of the Balanced Audio Technology VK-150 power 
amplifier.  Please read this owner’s manual to obtain the full benefit of the VK-150 in 
your system.  This manual provides you with necessary safety information and operating 
procedures for this exceptional unit.  For more technical information on the circuit 
design, please read the Balanced Audio Technology VK-60 White paper. 

 

 

WARNINGS: 

 

To prevent the possibility of serious injury, electrical shock, or fire: 

 

DO NOT operate with the bottom cover removed. 

 

DO NOT expose to rain or moisture. 

 

DO NOT defeat the ground power-plug. 

 

DO NOT replace fuses with anything other than the same type and rating as supplied by 

the factory. 

 

 
 

Package Contents

 

 

Included in the box should be the following: 
 
 

 

 

Description   

 

 

 

Quantity 

 
 

 

 

VK-150 Power Amplifier 

 

 

 

 

 

6C33C-B Output Tubes 

 

 

 

 

 

6SN7 Signal Tubes 

 

 

 

 

 

 

Power Cord 

 

 

 

 

 

 

 

Torx Wrench (T-10)   

 

 

 

 

 

Spare Cover Screws   

 

 

 

 

 

Spare Fuses 

 

 

 

 

 

 

 

Owner’s Manual 

 

 

 

 

 

 

Optional Accessories   

 

(as ordered) 

 
 
Save all the packaging materials in a safe dry area for the unlikely event that you need to 
return the VK-150 to the factory for service. 

 
 

Summary of Contents for VK-150

Page 1: ..._____________________________ Address _______________________________________ _______________________________________ IMPORTANT NOTE In order to receive the full five year product warranty please mail this completed form together with a copy of your sales receipt to Balanced Audio Technology at the address below within thirty days of purchase Failure to do so will result in the product being warra...

Page 2: ...VK 150 Balanced Power Amplifier Owner s Manual 1300 First State Blvd Suite A Wilmington DE 19804 Tel 302 999 8855 Fax 302 999 8818 ...

Page 3: ...ious injury electrical shock or fire DO NOT operate with the bottom cover removed DO NOT expose to rain or moisture DO NOT defeat the ground power plug DO NOT replace fuses with anything other than the same type and rating as supplied by the factory Package Contents Included in the box should be the following Description Quantity VK 150 Power Amplifier 1 6C33C B Output Tubes 4 6SN7 Signal Tubes 8 ...

Page 4: ... in the attached diagram Output 6C33C B tubes V9 through V12 can be installed in any of the four output sockets Physical Placement It is recommended that you provide open space above the unit for proper ventilation with no electronic components placed directly overhead Mount the unit on a hard surface with proper ventilation underneath Avoid placing the unit directly on a carpeted floor ...

Page 5: ... ended preamplifiers connected to its inputs All that is required to connect a single ended preamplifier with RCA connectors to the VK 150 s inputs is the optional balanced to single ended adapters These adapters are available from Balanced Audio Technology at a nominal charge For Speaker Connections The speaker connectors are clearly marked on the back panel of the VK 150 There are several sets o...

Page 6: ...t ON again Autobias Feature The VK 150 implements a sophisticated autobias circuit that automatically compensates for tube aging and line voltage fluctuations as well as marginal mismatching of tubes The successful operation of the autobias circuit is noted by individual LED s that glow visibly next to each output tube when viewed from the top of the chassis A total of four LED s should light up t...

Page 7: ...ast Acting type In either case if the unit still fails to operate properly please contact the factory for professional service Factory supplied fuses should only be replaced with the same type and rating parts Replacing Output Tubes In order to replace the 6C33C B output tubes please contact the factory and supply them with the unique identification number stamped on the side of the tube needing r...

Page 8: ... performance Please direct any further service inquiries to the factory Cleaning To remove dust occasionally wipe the front and top surfaces of your VK 150 with a damp soft cloth If fingerprints appear you may use a mild non alkaline soap solution Do not use abrasive cleaners as they may damage the fine finish of the unit ...

Page 9: ...so void if the product has been repaired modified or tampered with by anyone other than Balanced Audio Technology or its specifically authorized agents 5 Remedy If this product contains a materials manufacturing or workmanship defect that cannot be repaired at the dealership where the product was purchased it must be packed in original packaging and returned to Balanced Audio Technology via insure...

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