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Reference 880
READ ENTIRE INSTRUCTION MANUAL BEFORE USING
1. SAFETY INSTRUCTION
Read Instructions-All safety and operating instructions should be read before the amplifier is operated
Retain Instructions -Safety and operating instructions should be retained for future reference.
Heed warnings-All warnings on the amplifier and in the operating should be adhered to.
Follow instructions-All operating and use instructions should be followed.
Water and moisture-The equipment should not be used near water, e.g., near a bathtub, washbowl, kitchen sink,
laundry tub, in a wet basement, or near a swimming pool etc.
Ventilation-The equipment should be situated so that its location or position does not interfere with its proper ventilation.
So the equipment should not be situated on a bed, sofa, or similar surface, e.g., that may block the ventilation
openings, or placed in a built-in installation, such as a bookcase or cabinet that may impede the flow of air. The
equipment should be situated away from heat sources such as radiators, heat register, stoves, or other electronic
appliances that produce heat, so it may not suitable for commercial use.
Power sources-The equipment should be connected to a power supply only of the type described in this manual or as
marked on the equipment.
Grounding or polarization-Power-supply cords should be routed so that they are not likely to be walked on or pinched
by items placed upon or against them, paying particular attention to cords and plugs, convenience receptacles, and the
point where they exit from the amplifier.
Power lines-In case of connecting a tuner, an outdoor antenna should be located away from power lines. If an outside
antenna is connected to the system, be sure the antenna is grounded so as to provide some protection against voltage
surges and built up static charges.
Any Servicing-The user should not attempt to service the equipment r beyond that described in this manual. All other
servicing should be referred to qualified service technicians
CAUTION:
TO PREVENT THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-
SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of
uninsulated
"
dangerous voltage
"
within the product's enclosure that may be of sufficient magnitude to constitute a
risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the to the presence of important operating and
maintenance (servicing) instructions in the literature accompanying the appliance.
Congratulations!
Opera Audio welcomes you to the growing number of discerning audiophiles who own Opera audio products. This
manual has been prepared to help you to maximize your enjoyment of the performance and features of your new
Consonance equipment. Please study this manual carefully and become acquainted with all the features, operation
and capabilities of your new Consonance equipment. Should you have any questions, or desire information on other
Opera audio products, please contact your local Opera dealer.
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Summary of Contents for Opera Audio R880

  • Page 1 Reference 880 READ ENTIRE INSTRUCTION MANUAL BEFORE USING 1. SAFETY INSTRUCTION Read Instructions-All safety and operating instructions should be read before the amplifier is operated Retain Instructions -Safety and operating instructions should be retained for future reference. Heed warnings-All warnings on the amplifier and in the operating should be adhered to. Follow instructions-All operating and use instructions should be followed.
  • Page 2: When You Open The Box

    2. WHEN YOU OPEN THE BOX Before any Opera audio product leaves the factory it is carefully inspected for physical imperfections as a routine part of Opera audio's systematic quality control. After you have unpacked the equipment, inspect it for any physical damage. Save the shipping carton and all packing materials, because they are essential to reduce the possibility of transportation damage.
  • Page 3 The Opera Audio Co., Ltd. No.2,JiuXianQiaoLu , ChaoYang District, Beijing, China Post Code: 100015, Tel: 86 10 64377091, Fax: 86 10 64377465 Email: support@opera-consonance.com ,Website: www.operaudio.com You are responsible for all shipping charges, insurance, re-importation to your country, and duty arrangements. When shipping a product to factory for service, always include the following: –A sales slip or other proof of purchase if repair is claimed under warranty.
  • Page 4: Unpacking And Setup

    for high sound quality. Systems incorporating moving coil phono preamplifiers and active crossovers are more likely to suffer. Your Consonance hi-fi system can be damaged by lightning. Power amplifiers are particularly at risk and should be turned off when there is risk of lightning strike. For complete protection all mains plugs and any aerial cables should be disconnected when not in use.
  • Page 5: Theory Of Operation

    FUNCTION 1.Output indicator 2. Power switch 3. Volume control 4. Input select power 5. Input jacks (red / black) Reference 880 6. Speaker connector input volume 7. Power plug 8. Serial number 9. Fuse WHAT TO DO IF … Power indicator and filaments do not light: Check the fuse and make sure the amplifier is plugged into a working power outlet.
  • Page 6 USING TUBES A. Bias Bias is a negative voltage applied to a power tube's control grid, to set the amount of idle current the tube draws. It is important to bias a tube to stay within its rated dissipation. Otherwise, you DO NOT need to worry about small deviances from the manufacturer's recommendations.
  • Page 7 2. Class AB applies only to push-pull amplifiers. It means that when one tube's grid is driven until its plate current cuts off (stops) completely, the other tube takes over and handles the power output. This gives greater efficiency than Class A.
  • Page 8 Please mail or e-mail the Registration Card to the address as follow: The Opera Audio Co., Ltd. No.2 JiuXianQiaoLu ChaoYang District Beijing, China Post Code: 100015 Tel: 86 10 64377091 Fax: 86 10 64377465 support@opera-consonance.com www.operaudio.com Registration Card Name Address City State Email Telephone...

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