! GAKU-ON ! ! MONO POWER AMPLIFIERS OWNER’S INFORMATION !
CONTENTS ! 1) IMPORTANT SAFETY INFORMATION 2) CE DECLARATION OF CONFORMITY DISPOSAL POWER REQUIREMENTS 3) INTRODUCTION 4) OVERVIEW UNPACKING AND INSTALLATION 5) VALVE INSTALLATION 8) CONNECTION 9) OPERATION 10) TECHNICAL SPECIFICATIONS 11) WARRANTY INFORMATION 12) CONTACT INFORMATION
! IMPORTANT SAFETY INFORMATION ! RISK OF SHOCK OR ELECTROCUTION! INTERNAL OPERATING VOLTAGES ARE LETHAL! Do not remove top cover, unless specifically instructed to do so in the user manual. This unit contains fuses and other safety components in accordance with BS60065 requirements. In the event of failure, replacement fuse or safety component must be of the same part type and value. ! SUCH REPLACEMENT MUST ONLY BE CARRIED OUT BY A QUALIFIED SERVICE TECHNICIAN.
CE DECLARATION OF CONFORMITY We declare under our sole responsibility that this product is in conformity with the following standards or standardized documents: BS EN 60065 in accordance with the regulations 73/23/EEC, 89/336/EEC (from 1 January 1997) CE 94 Peter Qvortrup, Director Audio Note (UK) Limited 25 Montefiore Road Hove East Sussex BN3 1RD United Kingdom Tel: Fax: +44 (0)1273 220 511 +44 (0)1273 731 498 ! DISPOSAL This product must not be disposed of as normal household waste.
INTRODUCTION Thank you for purchasing this Audio Note (UK) product. With the correct care it should give you many years of pleasure and enjoyment. Please take the time to read all of the information in this manual before connecting your new component to an electrical supply or your system, to ensure both your safety and satisfaction. Please note that due to our desire to continually improve products, specifications are subject to change without notice.
GAKU-ON MONO POWER AMPLIFIERS Congratulations on your purchase of the Audio Note (UK) GAKU-ON MONO power amplifiers. They are Pure Class A Parallel Singled Ended valve mono amplifiers, using a pair of the highly regarded 211 / VT4C triode valves per chassis, producing a level of performance that is radically superior to the vast majority of current designs. The GAKU-ON represent the pinnacle of our mono amplifier range, and no expense has been spared in their design or production.
VALVE INSTALLATION The amplifiers are shipped without the valves installed. It is necessary to install the valves prior to operation. It is essential that the valves are installed correctly or serious damage that is not covered by the warranty will result. We recommend that your dealer perform this procedure for you if you are in any way unsure. FIRSTLY, ENSURE THAT THE AMPLIFIERS ARE NOT CONNECTED TO A MAINS ELECTRICAL SUPPLY, AND THAT THE POWER CORDS ARE NOT CONNECTED TO THE AMPLIFIERS.
VALVE INSTALLATION continued… Inspect a 211 valve and you will notice that there is a small ‘pin’ protruding from one side of the valve base; this locating pin ensures that the valve can only be correctly inserted into the amplifier in one way. Also examine the two large apertures in the top plate of the amplifier, located between the small front valve and the black rectangular transformer covers. These are the insertion points for the 211 valves.
VALVE INSTALLATION continued… Looking from the back of the amplifier, insert the 5R4WGB valves into the two empty sockets located on the left, situated between the black rectangular transformer covers and the loudspeaker connection binding posts. Locate the rib on the central pin of the valve and align with the valve base (it can only be inserted one way due to this locating rib) and with gentle but firm pressure insert the valve. Finally, insert the VT25 / 10Y into the front socket.
CONNECTION Line inputs Being mono power amplifiers, each GAKU-ON chassis is fitted with one XLR / Balanced input, located at the front of the left hand side of each amplifier. Connect the outputs from your preamplifier to these inputs. Ground Post A ground post is provided for connection to those source components that also use a separate ground terminal. Speakers Each amplifier is equipped with 2 colour coded binding posts for connection to your speakers.
OPERATION Once all the connections are completed and checked, ensure that the volume control of your preamplifier / source is at the minimum setting. Turn on all components in the signal chain BEFORE the GAKU-ON; they should always be the LAST components to be switched ON, and the FIRST to be switched OFF. Turn on the amplifiers by using the rocker switch located on the rear top left of the back panels, just above mains inlet socket.
TECHNICAL SPECIFICATIONS INPUT IMPEDANCE 600 Ohm, XLR / Balanced line level MAXIMUM OUTPUT 45 watts (approximate) per channel into 4 or 8 Ohm loads +/- 0.3dB CHANNEL BALANCE VALVE COMPLIMENT (PER CHASSIS / AMPLIFIER) 2 x 5R4WGB 2 x 211 / VT4C 1 x VT25 / 10Y UNIT WEIGHT (PER CHASSIS / AMPLIFIER) 27.
WARRANTY INFORMATION Audio Note (UK) warrants this product to be free from defects in materials and workmanship for two years from the original date of purchase from an appointed Audio Note (UK) dealer, and agrees to cover the cost of parts and associated labour required to correct such defects, subject to terms & conditions. This Warranty is offered to the first purchaser only. Any valves supplied with the unit are warranted for three months from the original date of purchase.
CONTACT INFORMATION If in the future your Audio Note (UK) product requires servicing, or if you require technical support or have any questions regarding this or any of our other products, please contact your local Audio Note (UK) dealer. Alternatively, please feel free to contact us directly: -! Audio Note (UK) Limited 25 Montefiore Road Hove East Sussex BN3 1RD United Kingdom Tel: +44 (0)1273 220 511 Fax: +44 (0)1273 731 498 e-mail: info@audionote.co.
