ZP3 - Uncategorized Fosi Audio - Free user manual and instructions

Product Type	Phono Preamplifier
Brand	Fosi Audio
Model	ZP3
Dimensions (W x D x H)	12 cm x 8 cm x 4 cm
Weight	300 g
Power Supply	DC 12V, 2A
Input	RCA (Phono)
Output	RCA (Line)
RIAA Equalization	Yes, accurate to ±0.5 dB
Gain	40 dB (adjustable)
Signal-to-Noise Ratio	>80 dB
Total Harmonic Distortion	<0.01%
Frequency Response	20 Hz – 20 kHz ±0.5 dB
Input Impedance	47 kΩ
Output Impedance	100 Ω
Chassis Material	Aluminum alloy
Color	Black
Compatible Cartridges	MM (Moving Magnet) and MC (Moving Coil)
Maintenance	Wipe with a soft, dry cloth. Avoid liquids.
Safety	Keep away from moisture and heat sources. Use only provided power adapter.
Spare Parts & Repairability	Contact Fosi Audio support for replacement parts. Designed for easy access to internal components.
General Information	Compact phono preamp for vinyl enthusiasts. Enhances turntable sound quality.

Frequently Asked Questions - ZP3 Fosi Audio

How do I connect the ZP3 to my turntable and amplifier?

Connect your turntable's RCA cables to the Input jacks on the ZP3, and then use another RCA cable from the Output jacks to any line-level input on your amplifier or receiver. Ensure the turntable has a ground wire; connect it to the ground terminal on the ZP3.

Does the ZP3 support both MM and MC cartridges?

Yes, the ZP3 is compatible with both Moving Magnet (MM) and Moving Coil (MC) cartridges. You can adjust the gain accordingly via the internal switch.

What power supply does the ZP3 require?

The ZP3 requires a DC 12V power supply with a minimum of 2A. Use only the adapter provided by Fosi Audio to avoid damage.

How do I adjust the gain on the ZP3?

The ZP3 has an internal gain switch that allows you to select between 40 dB for MM cartridges and 60 dB for MC cartridges. Open the bottom panel to access the switch.

Why is there a humming noise from my speakers?

Humming is often caused by a ground loop. Make sure your turntable's ground wire is connected to the ground terminal on the ZP3. Also, ensure all connections are secure and try a different power outlet.

Can I use the ZP3 with a powered speaker?

Yes, you can connect the ZP3's output directly to a powered speaker's line input (e.g., AUX or RCA). No amplifier needed.

What is the frequency response of the ZP3?

The ZP3 has a frequency response of 20 Hz to 20 kHz with a tolerance of ±0.5 dB, ensuring accurate reproduction of vinyl records.

How do I clean the ZP3?

Use a soft, dry cloth to wipe the exterior. Do not use any liquids or sprays. Keep the unit away from dust and moisture.

Does the ZP3 have any warranty?

The ZP3 comes with a 24-month warranty from Fosi Audio. Contact their support for warranty claims or issues.

Where can I download the user manual?

The user manual can be downloaded for free from notice-facile.com in PDF format. You can also request a translated version via email.

USER MANUAL ZP3 Fosi Audio

Introduction

Thank you for purchasing Fosi Audio ZP3 preamplifier.

The ZP3 is a balanced HiFi preamplifier developed from a deep understanding of user needs, featuring our proprietary balanced amplification architecture. This design offers enhanced audio quality, interference resistance, and dynamic range while effectively minimizing ground loop noise, making it ideal for both audiophiles and professional settings. Equipped with XLR balanced inputs and outputs, it also includes tone and balance controls, along with remote control functionality. We believe the ZP3 will greatly enrich your HiFi music experience.

① Power Switch

② Mute/Unmute

③ Volume +

④ Volume -

⑤ Input Switch

⑥ Product Selection (press the button to control the corresponding product)

Note: This remote control is compatible with selected Fosi Audio products. Functions not labeled cannot be used to control the ZP3.

① Power Switch/Input Selector
② Input Indicators
③ IR Receiver
④ Balance Control:

Adjusts the volume balance between the left and right channels. Turning the knob counterclockwise decreases the right channel volume without affecting the left channel; turning it clockwise decreases the left channel volume while the right remains unchanged.

⑤ Bass Control

⑥ Treble Control

⑦ Volume Control

⑧ RCA/XLR Input

⑨ RCA/SUB/XLR Output

⑩ 12V Trigger Input

⑪ 12V Trigger Output

⑫ AC110-240V Power Connection

⑬ HPF Switch
⑭ Bypass Switch

Specifications

General Specs
Channel	2.0
Input	RCA 1, RCA 2, XLR
Output	RCA, XLR, SUB
Bass and Treble Control Range	Treble: ±6dB Bass: ±12dB
Frequency Response	XLR/RCA	20Hz-20kHz (±0.2dB) 80Hz-20kHz (±0.2dB) 120Hz-20kHz (±0.2dB)
	SUB	20Hz-200Hz (±0.2dB)
Input Voltage Tange	AC 110-240V
Balanced Output (XLR)
SNR	≥112dB
Dynamic Range	≥112dB
THD+N	≤0.0007%
Noise Floor	≤6μV
Single-ended Output (RCA)
SNR ≥115dB
Dynamic Range ≥115dB
THD+N ≤0.0008%
Noise Floor ≤4μV

Package Contents

AC Power CableZP3

Remote Control (batteries not included)

12V Trigger Cable

User Manual

Operation Guide

1. Connect the ZP3 to your audio source using an RCA cable;
2. For active speakers, connect them to the ZP3 with an RCA cable. For passive speakers, connect the ZP3 to an amplifier with an RCA cable, then connect the amplifier to the speakers;

3. Attach the power cord provided in the package to the power input on the ZP3;

4. Toggle the power switch located on the back panel;

1. Press the power button briefly (or use the remote control) to turn on the device. Select the desired input channel by clicking the input switch button (or using the mode button on the remote);

2. Start with the volume at its lowest setting before playing music, then gradually adjust to the desired level. You can also adjust the bass and treble to your preference.

Important Notes:

• Ensure all cables are connected before powering on.
  • Always turn the volume down to the lowest level before playing music to avoid damaging your speakers or your hearing.
• Press the power button briefly to turn on the unit; hold it down for two seconds to turn it off.

Function Usage

Volume Memory

The ZP3 supports multiple input modes and offers a volume memory feature to enhance user experience.

When switching between inputs with varying signal strengths, users often need to manually adjust the volume each time. The ZP3 automatically remembers the volume setting for each input mode, adjusting to the previous volume level when switched to the corresponding input.

HPF Adjustment

For the RCA/XLR output frequency range, the ZP3 supports high-pass filter (HPF) adjustment to filter out low-frequency signals, allowing only high-frequency signals to pass through. This ensures that high frequencies are delivered to the main speakers, while low frequencies are handled by the subwoofer.

The HPF switch at the bottom of the ZP3 offers three adjustable cutoff frequencies, allowing users to fine-tune it based on their needs.

Bypass

When this feature is enabled, the signal bypasses the bass and treble adjustment.

12V Trigger

It allows seamless power on/off synchronization with Fosi Audio ZD3 DAC and ZA3 amp, eliminating the need for separate device power management.

Op-Amp Replacement

The ZP3 supports rolling the op-amps to tailor sound signatures to your preference.

Replacement Steps:

1. Identify the op-amp locations for the left and right channels on the PCBA, marked as L-OPAMP and R-OPAMP respectively. Determine which channel's op-amp needs replacement;

2. Use tweezers to carefully remove the op-amp from the side. Op-amps are directional; locate the number '1' mark or the circular/semicircular notch on the op-amp. Align this with the '01' mark on the PCB, and carefully insert the op-amp into its socket;

Markings of channels and op-amp's 01pin

Round/semi-circular notch No 1 marking

1. Ensure the op-amp is correctly oriented before installation to prevent damage.

Frequently Asked Questions

1. No sound after powering on and playing?

A. Please check if the cables are properly connected.
B. Ensure the correct input mode is selected.
C. Verify if the volume on both the source device and ZP3 is adjusted properly.

2. One channel is louder than the other?

A. The ZP3 has balance adjustment; ensure the balance knob is set to the center position.
B. Check if the input signal is unbalanced between the two channels.

If you have any further questions, please contact our support team at [e-mail].

Warranty and Maintenance

Fosi Audio pledges to give a 24-month limited warranty and support from the date of purchase. If you encounter any problem when using our product, please contact our support team at [e-mail].

About Us

Fosi Audio designs and builds innovative audio products with all your music in mind. Great sound, simple but elegant designs, high-quality components, and truly useful features are what Fosi Audio pursues. We sincerely hope you can get as much enjoyment from our products as we've had to create them!

Official Website: www.fosiaudio.com

Amazon Store: www.amazon.com/fosiaudio

Facebook Page: www.facebook.com/fosiaudioglobal

Youtube Channel: www.youtube.com/@fosiaudio

Official Forum: community.fosiaudio.com

Whatsapp: [phone]

After-Sales Service and Technical Support Email:

[e-mail]

产品概述

感谢您购买ZP3前级放大器!

AC电源线*1ZP3

遥控器 (不含电池) *1

12V Trigger线*1

使用说明书*1

使用指南

Bypass

12V Trigger

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製品について

AC電源ケーブルZP3

リモコン (電池は付属しません)

12V トリガーケーブル

ユーザーマニュアル

操作ガイド

Bypass

12V Trigger

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