Goldmund Amplifiers Manuale utente

USER MANUAL

GOLDMUND TELOS HEADPHONE

Amplifier

User manual – Goldmund Telos Headphone Amplifier - 2 -

Thank you for purchasing the Goldmund Telos Headphone Amplifier.

You have acquired one of the best integrated amplifiers ever made for professional and domestic

uses. It incorporates the Goldmund TELOS amplifier technology and will soon become THE MUST

HAVE for headphone addicts and music lovers who wish to enjoy their favorite tracks privately.

Please take some time to read this manual. It may provide you with useful information to make

your pleasure of listening to the Telos Headphone Amplifier even higher.

INTRODUCTION

GOLDMUND TELOS HEADPHONE AMPLIFIER

Goldmund was founded in 1978 and has ever since been dedicated to the accurate reproduction of

sound and image.

At Goldmund, we strive to lead in the creation, development and manufacture of the industry’s

most advanced technologies, including audio and video systems.

The guiding principle at Goldmund is to produce a precise sound with the latest possible loss of

quality through the different stages. Goldmund will never adopt a technology before it is sufficiently

developed to satisfy the high quality standards we set. This is why Goldmund has often rejected

mainstream technologies and developed its own.

User manual – Goldmund Telos Headphone Amplifier - 3 -

W A R N I N G!

This high quality headphone amplifier

possesses new technical features such as

ultra-high band width and computer linking

which are necessary for accurate transcription

within today’s best audio systems.

Only careful use can provide all the

satisfaction you are expecting.

All handling must be performed according to

the following instructions to avoid impairing the

amplifier’s performance.

Nevertheless, if the instructions are perfectly

carried out, you will notice that the use of the

GOLDMUND TELOS HEAPHONE is quite

simple and convenient.

IMPORTANT

PLEASE DO NOT CONNECT ANY CABLES

OR MOVE ANY PARTS BEFORE READING

THE FOLLOWING INSTRUCTIONS.

User manual – Goldmund Telos Headphone Amplifier - 4 -

Table of Con en s

1 UNPACKING 5

2 CHOICE OF LOCATION & COOLING 5

3 CONNECTIONS & LINE VOLTAGE ADJUSTMENTS 6

4 AMPLIFIER CONTROLS 8

5 SOUND QUALITY OPTIMIZATION 8

6 MAINTENANCE AND CLEANING 9

7 TECHNICAL DATA 9

8 REAR PANEL 11

User manual – Goldmund Telos Headphone Amplifier - 5 -

1 UNPACKING

You will find within the custom packaging:

- The Headphone Amplifier

- The power cord

- This owner's manual

Unpack the above-mentioned parts carefully.

Keep all packaging for future use.

WARNING

If you need to return the Telos Headphone Amplifier to the factory or to your local

representative for a warranty repair, please note that it must be repacked in the original

packaging.

This packaging has been designed specifically to protect your Headphone in transit. Use of

alternative packaging is likely to result in damage, invalidating warranty cover.

2 CHOICE OF LOCATION & COOLING

The Telos Headphone Amplifier, like all high quality amplifiers, generates a lot of heat when

driven at high levels and therefore must be vented properly.

It is mandatory to allow proper cooling of the heat sinks.

Do not put temperature sensitive equipment on top of the Telos Headphone.

User manual – Goldmund Telos Headphone Amplifier - 6 -

CONNECTIONS & LINE VOLTAGE ADJUSTMENTS

Connect the power cord to the back of the integrated amplifier and plug it into the nearest

wall plug. For safety reasons, use only a 3 lugs grounded plug.

To get the best sound from the Telos Headphone, avoid any multi-way plugs or extension

cords.

Connect a computer, CD/DVD or Blu-ray player to the back panel of the Goldmund Telos

Headphone Amplifier, using either the USB Audio, Toslink Optical, RCA Digital or RCA

Analog connector.

A USB driver needs to be installed on your computer before to use it as a source with your

Telos Headphone Amplifier.

Mac and Linux operating system do not need driver to be used with the Headphone

Amplifier.

Please contact your authorized Goldmund retailer to assist you to set up your computer for

use with the Telos Headphone Amplifier.

When the input source is connected, connect your headphone amplifier to your headphone

using one of the two input connector located on the front plate of your unit.

Select one of the 3 available inputs for listening using the front input switch.

Only one connection per input can be used at once. The Optical Toslink input has the

priority on the RCA Digital input, in case you want to use the Digital input, unplug the

Optical cable from the digital input.

AT T E N T I O N:

A residual high frequency noise may remain audible in some circumstances if an analog

input is left open and is selected. This disturbance has no effect on the amplifier but may be

avoided easily through the application of short-circuit plugs on all unused inputs.

No e:A gain selection is available to

raise the global gain of your

headphone amplifier in case you are

using a headphone with a low

sensitivity. Please contact your official

Goldmund representative to configure

your unit.

User manual – Goldmund Telos Headphone Amplifier - 7 -

3 CONNECTIONS & LINE VOLTAGE ADJUSTMENTS (C d.)

LINE VOLTAGE ADJUSTMENT

The Goldmund Telos Headphone Amplifier uses an internal power supply developed by

Goldmund to provide totally separate voltage between the USB part and the digital/analog

circuitry.

Your power supply unit has been set to operate with the mains voltage of your area. Check

on the power supply voltage switch on the rear panel if there is any doubt. If you move after

purchasing the amplifier to an area using a different AC mains voltage, you can change the

voltage yourself or consult your local Goldmund dealer for assistance in doing so.

The voltage selector on the rear panel allows choosing between 220V (234V nominal) and

110V (117V nominal).

Please refer to the Technical Specifications at the end of this manual for the main line

voltage range.

In case the nominal line voltage in your country is out of range, please consult your local

Goldmund dealer for assistance.

The power supply unit can operate indifferently with both 50 and 60 Hz AC line.

User manual – Goldmund Telos Headphone Amplifier - 8 -

4 AMPLIFIER CONTROLS

The Telos Headphone Amplifier is powered on using the switch located on the back panel.

In regular use this switch should be left ON at all times (see sound quality optimization).

The amplifier is powered OFF by switching the back panel switch to the OFF position. A

safety circuit switches the unit to mute to avoid any disturbance reaching the speakers.

VOLUME ADJUSTMENT

The level control may be adjusted manually using the front panel knob.

SELECTOR

The selector knob selects one of three available inputs (1xUSB, 2xDigital in parallel and

1xAnalog).

An orange locking led is lighted up when an analog or USB input is selected and when a

digital source is connected to one of the digital input.

SERIAL PORT

The Telos Headphone Amplifier can be controlled via a standard computer serial port,

which is used also for future software upgrade, please contact your Goldmund

representative for more details.

5 SOUND QUALITY OPTIMIZATION

WARM UP SONIC EFFECT

If the amplifier has been powered off for some time, the optimum sound quality is only

reached after some time. It may take 15 minutes for the amplifier to reach optimum

operating temperature, as the circuits have to warm up to around +55 degrees Celsius

(=131degrees Fahrenheit).

User manual – Goldmund Telos Headphone Amplifier - 9 -

6 MAINTENANCE AND CLEANING

The Telos Headphone Amplifier usually requires no maintenance. Please contact your

Goldmund approved dealer if any maintenance should be required.

Always turn the power OFF before cleaning your Headphone Amplifier.

To clean the external metal of the amplifier, always use a clean, soft, damp cloth. Dampen

it with water or a mild detergent solution. Avoid abrasive or harsh cleansers (e.g. products

containing sodium carbonate).

The identification plate is plated with precious metal. Simply clean it with a soft cloth,

without any chemical solution.

7 TECHNICAL DATA

POWER SUPPLY

• Nominal mains voltage: 117 V or 234 V (switchable), 50 to 60 Hz

• Mains voltage range: +/- 10 %

• 1.6A slow-blow fuse

• Separated ground and earth signal

• Connection between earth and ground to cancel all ground loops

INTERFACE AND FUNCTIONS

• Input selectable through front panel switch

• USB device: Audio Class 2.0 (no driver required on Mac OS X as of v.10.6.4 nor on

Linux, driver required only for Windows)

• 1 x Toslink Optical or Digital S/PDIF coaxial RCA 75 Ohms

• 1 x Analog RCA (Left & Right): ADC conversion for DSP correction

• RS232 Command connector

• ON/OFF power switch key

• Sample rate up to 384 kHz/Bit depth up to 32

• DSD over PCM capabilities

• Digital volume knob on front panel

• Gain adjustable for low/high sensitivity headphones.

User manual – Goldmund Telos Headphone Amplifier - 10 -

7 TECHNICAL DATA (C d.)

AMPLIFIER

• Amplifier dynamic Range: > 100 dB (no weighting)

• Frequency response: +/- 0.55 dB (20 Hz - 20 kHz, unloaded)

SIZE AND WEIGHT

• 30 W x 35 D x 10 H (cm)

• Weight: 12 kg

WARRANTY

• 3 years parts and labor

Information and product specifications contained in this manual are subject to change

without prior notice. Updated versions of this manual will be posted on our website at

www.goldmund.com.

Please visit our support page at http://www.goldmund.com/support/register to register your

Goldmund product for warranty.

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