Calyx FEMTO User Manual

FEMTO

Instruction Manual

By Digital & Analog

www.calyxaudio.com

1

Thank you for purchasing FEMTO

Music is the most important messenger of human emotion as well as a meaning of its expression

since human beings appeared on this earth. Music created by amazing inspiration of many gifted

composers makes people moved and our normal lives enriched.

The absolute sound and real music performed in real space like concert halls are the most

important experience that makes people get to the musical essence. Besides, audio products re-

producing music are a way of modern civilization making our lives better.

Since 1999, the year of establishment, Digital & Analog Co., Ltd. (as known as D&A) has been

providing class-D I.C.s to various audio OEM companies. And D&A started to make its own high-

end audio products since 2008 and as a result, we succeeded to build audio products with

excellent measured performance which any other amplifiers were not able to reach so far. Calyx is

the by-product of such an effort based on D&A’s many experiences like designing, manufacturing

and selling of class-D ICs and supporting its customers to make their audio products using D&A’s

I.C.s. Calyx has been tested subjectively as well as objectively under a lot of test circumstances.

A great Chinese poet ‘Bai Ju Yi’ of the Tang Dynasty expressed sound as followings in on of his

book;
“A poem has passion as its root, words as its buds, sound as its flower and meanings as its fruits”

So we named our products as Calyx, in the meaning of corolla of music described as flower by

the renowned poet.

Calyx will enrich your life as a strong support of musical flower. This coincides exactly with our

slogan;
“Technology making the world affluent.”

Calyx is high-end products, which you can be proud of possessing it.

Digital & Analog Co., Ltd. has developed class-D amplification technology with many patents on

the technology.

From now on, we provide high-end audio products to music lovers like you

Thanks and enjoy the music.

Seungmok Yi
CEO/President

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Contents

1. WARNINGS-------------------------------------------------------------------4

2. Functions---------------------------------------------------------------------5

3. Description of Functions----------------------------------------------------7

4. Software Installation-------------------------------------------------------10

5. Connection Diagram-------------------------------------------------------11

6. Input Source Selection-----------------------------------------------------12

7. Guaranteed Specifications-------------------------------------------------13

8. Measured Performances---------------------------------------------------14

9. Trouble-shootings----------------------------------------------------------21

10. Warranty--------------------------------------------------------------------22

3

1. WARNINGS

Please take a moment to read these notes before installing your Calyx Femto, as they will enable you
to get the best performance and prolong the life of the unit.

As our engineers are striving for the constant research and development to develop the quality of products,
shape or structure of our model can be changed without previous notice.

※ We advise you follow all instructions, read all warnings and keep the instructions for future reference.

This symbol indicates that dangerous voltage which
can cause electric shock is present inside this unit.

Do not overload outlets or extension cords
▶ This can result in a risk of fire or electric shock.

Never touch the power cords or the unit with wet
hands.
▶ This can result electric shock.

Never use the frayed or damaged or cracked or

This symbol alerts you to important operating and
maintenance instructions accompanying the unit.

Do not put any objects on top of the unit.
▶ If the objects fall, it may cause harm to the user.

Please ensure there is ample ventilation
▶ The unit will become hot when in use

To clean the unit, please follow next instructions.
▶ Wipe its case with a dry, lint-free cloth.

broken power cords.
▶ This can result in a risk of fire or electric shock.

Do not expose the unit to rain or moisture.
▶ This can result in a risk of fire or electric shock..

Do not expose the unit to direct sun radiation or other
heat sources.
▶ This could lead to overheating and malfunction of
the unit.

During thunderstorms, disconnect the power cords
from the wall outlet.
▶ Voltage peaks due to lightning could damage the
unit.

Never attempt to repair, disassemble or reconstruct

Do not move the unit, while it is powered on.
▶ This can cause harm to the unit

Do not place the unit on an unstable surface or shelf.
▶ If the unit falls, it may cause harm to the unit or to
the user.

Do not use attachments not recommended by your
dealer
▶ This may cause harm to the unit

Do not listen to loud music for a long time.
▶ This may cause harm to user’s hearing ability

the unit.
▶ Serious electric shock could result.

Do not use any cleaning fluids containing alcohol,
ammonia or abrasives.
Do not spray an aerosol at or near the amplifier.

※ If the product needs repair, please contact your local Calyx dealer.

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2. Functions

Front Panel

Rear Panel

DISPLAY WINDOW

MUTE

FILTER PHASE INPUT SELECTION

VOLUME CONTROL

COAX1 AES/EBU1 BNC OPTICAL2 XLR OUT-R XLR OUT-L AC-INLET

COAX2 AES/EBU2 OPTICAL1 USB RCA OUT-R RCA OUT-L

5

Display Window

Remote Control

SAMPLING

SOURCE VOLUME

FREQUENCY

VOLUME UP

MUTE

SOURCE SELECT

VOLUME DOWN

PHASE

FILTER

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3. Description of Functions

1 Power Switch

This is located on the left side panel when you see from the front.

Press once to turn the unit on and once more to turn it off.

2 Input select

These buttons select the signal from the digital inputs on the rear panel.

3 Level- Output level control buttons

They adjust the output analog level.

This high quality digital volume control allows you to adjust from 0(mute) to 100 (0dB).

4 Remote Sensor

The signals from the remote control are received by this sensor. Please point your remote

control to the sensor when using the remote control.

5 Display

Input Display

This shows you which digital signal is selected.

Sampling Frequency

This indicates the sampling frequency of incoming digital signal.

Level Display

This shows you the output level of analog signal.

Digital Filter

There are 3 different digital filters you can choose. When you press the button of filter, it

changes “Filter 1”, “Filter 2” and “Filter 3”.

Phase of Analog output

Analog out of FEMTO is true-balanced out. You can choose the right configuration of analog

phase for your pre-amplifier or power amplifier. “Normal” means pin 2 is hot “Inverse” means

pin 3 is hot.

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