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Audio Note ONGAKU - User Manual

Audio Note ONGAKU
15 pages
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ONGAKU
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INTEGRATED AMPLIFIER
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OWNER’S INFORMATION
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Summary

Important Safety Information

Electrical Safety Precautions

Covers risks of electric shock, lethal voltages, fuse replacement, and grounding requirements.

Operational Safety Guidelines

Addresses heat generation, ventilation needs, humidity, and liquid exposure risks.

General Handling Precautions

Includes advice on power cord handling, magnetism, unqualified repair, and physical object placement.

CE Declaration and Compliance

Declaration of Conformity

States the product's conformity with relevant standards and regulations.

Product Disposal Guidelines

Instructions for environmentally safe disposal of the product.

Power Requirements Information

Guidance on verifying unit power requirements for the geographical area.

Introduction to the ONGAKU

About This Manual

Emphasizes reading the manual before connecting for safety and satisfaction.

Product Updates and Support

Notes that specifications may change and provides contact information for questions.

ONGAKU Amplifier Features

ONGAKU Amplifier Description

Details the amplifier's heritage, Class A single-ended design, and 211 valve usage.

High-Quality Component Selection

Highlights the use of premium internal components like silver wire, tantalum resistors, and specific capacitors.

Engineering Philosophy

Explains the focus on sonic performance and fulfillment of Audio Note Level 5 criteria.

Unpacking and Installation Guide

Unpacking Precautions

Advises careful handling due to the amplifier's weight and retaining packing materials.

Choosing an Installation Location

Specifies requirements for a dry, dust-free, level area, shielded from direct sunlight and vibration.

Ventilation and Placement

Details the need for adequate airflow, recommended spacing, and placement away from children/animals.

Valve Installation Procedure

Safety and Valve Preparation

Emphasizes disconnection from mains, correct installation, and lists supplied valves.

Installing the 211;VT-4 C Valves

Provides initial instructions for inserting the main output valves.

Valve Installation Details

211 Valve Insertion Guide

Explains the locating pin and aperture alignment for correct insertion of 211 valves.

Completing Valve Installation

Installing the 5 R4 WGB Valves

Instructions for inserting the 5R4WGB rectifier valves into their sockets.

Installing the Signal Valves

Guide for inserting the CV4068 and 6463 signal valves into front sockets.

Final Valve Fitment Check

Reminder to re-check all six valves for correct and secure fitting.

Connecting Your Amplifier

Line Input Connections

Details the four line-level inputs for connecting sources like CD/DAC or phonostages.

Ground and Speaker Connections

Explains the ground post and the colour-coded speaker binding posts for left/right channels.

Mains Power Connection

Covers the IEC mains inlet, fuse location, and use of the supplied power cable.

Connection Quality Advice

Recommends tight, clean connections and high-quality audio interconnects for best results.

Operating Your Audio Note ONGAKU

Initial Power-On Procedure

Ensures volume is at minimum before turning on the amplifier via the rear switch.

Front Panel Controls

Explains the Function Selector for choosing sources and the Volume Control for level adjustment.

Break-in and Warm-up Period

Details the required 200-hour break-in for performance and the 30-45 minute warm-up time.

Care, Maintenance, and Valve Life

Covers cleaning instructions and the approximate 6000-hour lifespan of the valves.

Technical Specifications

Performance Metrics

Lists input impedance, sensitivity, maximum output, and channel balance.

Physical and Power Data

Details unit weight, dimensions, mains input voltage, fuse ratings, and power consumption.

Specification Update Note

Informs users that specifications are subject to change due to ongoing research.

Warranty and Service Information

Product Warranty Coverage

Details the two-year warranty on materials/workmanship and three-month valve warranty.

Service and Repair Process

Outlines procedures for service, shipping requirements, and invalidation by unauthorized work.

Warranty Exclusions

Lists conditions that are not covered by the warranty, such as misuse or accidental damage.

Contact and Support Information

Reaching Audio Note (UK)

Guidance on contacting local dealers or the company directly for service and support.

Company Contact Details

Provides the company's address, telephone number, fax number, and email address.

Audio Note ONGAKU Specifications

General IconGeneral
BrandAudio Note
ModelONGAKU
CategoryAmplifier
LanguageEnglish

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