Design by Mr. K PPA - 01 Manuel utilisateur
Introduction of the Passive Preamplifier
Our company thanks you for purchasing the Passive Preamplifier, PPA –
01. Our PPA-001 is of a high quality range and a reakthrough in the
design of passive pre-amplifiers. Its performance can satisfy all music
lovers. Please e informed of its key features elow.
•Selectable Gain Control Switch Specials
In electromagnetics, when an external magnetic field is applied to a
ferromagnet (e.g. iron), and the atomic dipoles align themselves with
it, a physics phenomenon called Magnetic Hysteresis occurs. In such
a case, even when that external magnetic field is removed, part of the
alignment retains. As a result, that ferromagnet material ecomes
magnetized.
Magnetic Hysteresis theory is also applied in our PPA – 01 design, y
winding coil around the transformer core. When current/voltage
passes through the coil, magnetic force is induced throughout our 59
steps autotransformer (C Core), a slightly delay effect on the sound
quality will result. This makes the transformer volume very different.
That explains why tu e amplifier usually produce sound quality
superior to that of solid-state amplifier.
With x, 3x, 5x and 0x gain options, this PPA - 01 provides the
following high uilt quality of sound:
P.1
Differ from conventional passive amplifiers, this product wisely
adopted a 59 steps autotransformer (C Core) design. With a
material we keep confidential, our transformer adopted the new
“cool-melted method” technology, without having to use metal
clamps. In conventional transformer design, metal clamps having
material mismatch can cause a drop in sound quality.
•59 steps Mechanical Volume Control Switch
Typically, a passive preamplifier consists of a VR-connected
transformer. In our product, only one 59 steps autotransformer (C
Core), is used, and that makes this kind of 59 steps mechanical
volume control switch special and the sound feature gorgeous.
PPA - 01 is also an entirely passive design with literally zero extra power
sources plugged in to the audio signal path, meaning:
•NO power required;
•NEITHER distortion nor interference are added y active
components or power lines to this device;
Last ut not least, this device is designed and manufactured in Hong
Kong. P.2
Table of Contents
•Introduction of the Passive Preamplifier P.1 – 2
•Table of Contents P.3
•Important Safety Instructions P.4
•Special esign Features and Philosophies P.5
•Installation Instructions P.6 – 8
•Operations P.9 – 11
•Specifications P.12 – 13
•Warranty and Contact etails P.14 – 15
P.3
Important Safety Instructions
Note: Please read the following instructions carefully efore operating
your PPA - 01.
•DO NOT connect this device to Power Amplifiers/Integrated
Amplifiers with input impedance lower than 10kΩ, otherwise
malfunctions will e led due to the minimum output impedance of
10kΩ on this device.
•DO NOT plug in any power sources to this device.
•DO NOT attempt to place any heavy o jects (> 3kg) on top of this
device.
•DO NOT attempt to repair this device. If repair is needed, please
contact us. Contact details are listed in the last session.
•DO NOT expose this device to extremely high or low temperatures.
•DO NOT operate this device with the cover removed.
•DO NOT allow any liquid to contact the device.
•DO NOT use this device without authorizations. Keep it away from
children.
•DO NOT place this device within 10cm next to the isolation
transformer or power amplifier.
•ALWAYS set this device down gently.
P.4
Special Design Features and Philosophies
•59 Steps Autotransformer
Conventional passive preamplifier usually uses a traditional VR-
connected transformer with single input and output ports in the
design. Our Passive Preamplifier however leads a special design y
using only one 59 steps autotransformer. It is an ALL-IN-ONE
design.
This clever all-in-one design gives music lovers the experience of
direct-mechanical selection and control of transformer output.
Unlike the conventional passive preamplifier, its output is usually
controlled y a digital switch-connected external remote device
which worsens the sound quality.
P.5
Installation Instructions
Please read through the following instructions for the first-time
installation.
1. Placement
Place the PPA – 01 near to the source, input or output components
when connecting your Passive Preamplifier to the system. That can
minimize the negative effects of long ca le connections.
2. Turn off Associated Components
To avoid the potential damages caused y other components during
the PPA – 01 connection.
3. Connections
3.1 Installations Methods
PPA – 01 can provide 3 different connection methods to allow
varying sound qualities:
Type 1 Connections
CD/Network player → PPA – 01 → Power Amplifier/Integrated
Amplifier
P.6
* Power Amplifier/Integrated Amplifier
Applica le to oth tu e amplifier and solid-state amplifier.
Type 2 Connections
CD/Network player → PPA – 01 → Preamplifier → Power
Amplifier
* Power Amplifier/Preamplifier
Applica le to oth tu e amplifier and solid-state amplifier.
4. Type 3 Connections
CD/Network player → Solis-State Amplifier → PPA – 01 → Power
Amplifier
# Due to the concern of the high output impedance for tu e amplifier,
we recommend the preamplifier type of solid-state amplifier.
* Power Amplifier
Applica le to oth tu e amplifier and solid-state amplifier. P.7
3.2 Input Port Connections
Connect the audio players output(Source Component)to your
Passive Preamplifier input. With 3 different input ports(Port A, B
and C), audio players can e freely to e connected, to the
corresponding RCA (Red and White Ports). Audio players can e CD
players, networking players, radio sets etc.
3.3 Output Port Connections
Connect the output amplifier input to your Passive Preamplifier
output, to the corresponding RCA (Red and White Ports). Since the
minimum output impedance of PPA – 01 is 10kΩ, your output
amplifiers should not e lower than 10kΩ with the input impedance.
Some amplifiers in the markets applied a 600Ω transformer for input
impedance, this will cause function defect if these types of amplifiers
are used for connections.
5. Switch on Source Component
Turn on your audio players(Source Component) and start playing
your music.
6. Switch on Power Amplifier
Turn on you power amplifier.
7. Turn it up
Now, you may slowly increase your PPA – 01 volume/gain control
switch. Enjoy your music!
P.8
perations
•Front Panel
1. Volume Control Switch
The high-quality and machined kno allows up to 59 steps of
absolute mechanical volume control, ranging from the lowest
to the highest volume y turning from far left to far right.
2. Gain Control Switch
Condition
Make sure the VOLUME CONTROL SWITCH is selected
to the LOWEST VOLUME before using this gain control
switch. P.9
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