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amplifiers are brought to you by Premier Builders Guild.

  

We know your new

 

 

amplifier will provide many hours of enjoyment and 

inspiration in the years to come.  This manual is a resource for some of your 
questions.  Please contact us with any other questions or comments that you may 
have.  We look forward to hearing from you! 

PHONE:  

1(707)584-TONE (8663) (M-F 9am-5pm PST) 

FAX: 

 

1(707)584-8661

 

 

 
ADDRESS:  Two-Rock 
 

 

 

619 Martin Avenue, Suite 6 

 

 

 

Rohnert Park, CA 94928 

 
SERVICE:     service@two-rock.com 
 
WEB:       

www.two-rock.com 

 

 
 

PRECAUTIONS: 

 
DO NOT expose to rain or any other moisture. 
DO NOT use cleaning solvents.  Wipe exterior with a clean, dry 
cloth only. 
Refer servicing to a qualified service technician. 
 
 

 
 

 
 
 

Summary of Contents for Two-Rock Studio Pro 50

Page 1: ...OWNER S MANUAL...

Page 2: ...nce with the manufacturer s instructions 8 Do not install near any heat sources such as radiators heat registers plugs and the point where they exit from the apparatus 9 Protect the power cord from be...

Page 3: ...ts the bass response In the full counter clockwise position low frequencies are cut In addition the response of the treble and mid range controls is greatly reduced In the full clockwise position low...

Page 4: ...Level This control has a pull bright function The loop is active in the circuit even with no effects connected so the level control acts as a master volume The pull bright feature is useful when playi...

Page 5: ...utput tube sockets A digital voltmeter and small screwdriver are required for bias adjustment BIAS ADJUSTMENT PROCEDURE Power up unit and connect proper speaker load DO NOT have an instrument connecte...

Page 6: ...35watt and 50watt Factory Setting 064V 1200V to 1400V for 100watt Factory Setting 1260V 6V6 Installed in the 22watt versions only 044V to 058V Factory Setting 054V 6V6 Installed in 22watt versions wit...

Page 7: ...other questions or comments that you may have We look forward to hearing from you PHONE 1 707 584 TONE 8663 M F 9am 5pm PST FAX 1 707 584 8661 ADDRESS Two Rock 619 Martin Avenue Suite 6 Rohnert Park...

Page 8: ...This is a product of Premier Builders Guild 619 MARTIN AVENUE SUITE 6 ROHNERT PARK CA 94928 707 584 8663 www two rock com SERIAL NUMBER _____________________________...

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