Product Details

Specifications

ZERO 24bit/192khz Dual D/A Converter.OPA627U
with headphone amp
with USB converter
Face color:silver

09 edition has added the auto search and signal lock function.

With memory function and can save data automatically after power off.it will return to the lastest situation if no signal is found after power on again.

with USB function.

With an special independent circuit for D/A converter,the sound effect is greately improved.

Readjust and refine the analogy circuit to improve its function.

enlarge the height by 30% of all 9 pcs radiating ribs to better give off heat.

Improved the power section to eliminate static disturbance.

With color option: black and silver(please select)

Improved the mold of outer case and the front panel.

Improved function key(front panel) introduction:

1. Mute/Set :

When with music on,press this button,the Zero will become mute,it will continue to play music after press this button again.

2.input:

When power on the zero,the indication light of this button will flash according to different input signals it detects,for example:Blue(coaxial in),Red(optical in),Green(USB in).

And soon after the Zero decect its input signal,it will automatically lock the signal.So when you want to change to other input mode while in use,please press this button.

More photos about the inside:

enlarge the height by 30% of all 9 pcs radiating ribs to better give off heat.

New edition uses HD74HC04(Japan) to filter digit signal and eliminate disturbance during transmission.

09 edition ZERO use ZL(Japan) capacitances.and LM337/LM317( US)

09ZERO USB part

Feature Overview

Support Max.24 bit/192KHz input
independent digit optical fibre input
independent digit coaxial input
Unique preamplifier suitable for all kinds of impedance earphone.
6.3mm earphone signal output
unique volumn adjustable preamp
analogy signal non-balanced output
With lots of quality HIFI components
The Opamp with all plated components and is easy to replaced.
With delayed turn on/off function to avoid currency concussion.
With double-faced(cuprum on one side and foil on the other side)circuit board which is thicker and superiorhas .


Specifications:
Recevial chip CS8416
Decode Chip AD1852
Analogy Opamp chip: OPA627
S/N ratio 105dB
Distortion 0.0005%
dynamic range: 117dB
Frequency Response 20Hz-30KHz±0.5dB
analogy output frequency: 2V
Imput port: one digital optical fibre imput
                    one digital coaxial imput
Output port: one RCA analogy un-balance output

                      one 6.3mm headphone signal output
power imput voltage: 220V50Hz±10
Dimension:240X220X55mm
Net weight:3kg

Function (Q & A)
1.How to make optical fibre signal input?
Re:Press the "power" button on the panel to turn on the Decoder,the power and optical blue indicator light will flash,and the digital optical fibre signal channel will open.To avoid concussion,the analogy signal output channel will have 3 seconds in delay to open.At that time,if there's digit optical fibre signal in,then there will be analogy signal out accordingly.

2.How to make digital coaxial signal input?
Re:After finish step 1,press "Coaxial"button on the panel,the digital coaxial signal channel will open and the coaxial indicator light will flash too.At that time,if there's digital coaxial signal in,there will be analogy signal out.

3.Under digital optical fibre signal input condition,How to make analogy signal output adjustable?
Re:After finish step1,revolve the "volumn"switch(not exceed 9 o'clock position),press "Preamp" button,the phone indicator light will flash.At that time,if there's digital optical fibre signal in,then the output analogy signal can be adjustable according to the volumn switch.

4.Under digital coaxial signal input condition,how to make analogy signal output adjustable?
Re:After finish step2,revolve the "volumn"switch(not exceed 9 o'clock position),press "Preamp" button,the phone indicator light will flash.At that time,if there's digital coaxial signal in,then the output analogy signal can be adjustable according to the volumn switch.

5How to make earphone amplifier output under digital optical fibre signal input condition?
Re:After finish step3,revolve the "volumn"switch(not exceed 9 o'clock position),then insert the phone and the analogy output signal will be cut-off,the sound/music can only be out through the phone and you can adjust the phone volumn by "volumn" switch.

6How to make earphone amplifier output under digital coaxial signal input condition?
Re:after finish step4,revolve the "volumn"switch(not exceed 9 o'clock position),then insert the phone and the analogy output signal will be cut-off,the sound/music can only be out through the phone and you can adjust the phone volumn by "volumn" switch

At the time of purchase, please indicate the following: