Fosi Audio ZP3 Preamplifier with 3-in/3-out XLR/RCA/SUB OUT HiFi Preamp with HPF High Pass Filter Tone Control

$269.99

Includes all taxes

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Description










TIPS :

1.Please pay attention to whether the power plug you have selected is correct when placing an order

2.The 2026 edition of the ZP3 orange knob will no longer feature a dot.


Feature

1.Home Audio Control Hub

Features 3-in-3-out options for connecting up to three audio sources. Includes a remote control for one-touch input switching and volume adjustment—making it easy to manage your home audio system with freedom

2.Versatile Connectivity

Equipped with RCA1/RCA2/XLR inputs and RCA/XLR/Sub-Out outputs, the ZP3 integrates multiple devices with ease. Supports balanced XLR in/out for cleaner sound, plus RCA/XLR signal conversion for maximum compatibility

3.Audiophile-Grade Components

Built with premium parts including ELNA capacitors, NJR NJU72315 volume IC, and gold-plated RCA jacks. These components reduce noise and distortion, delivering exceptional clarity and high-fidelity performance

4.Adjustable High-Pass Filter

Three-level HPF settings filter low-frequency signals from the RCA/XLR outputs, sending only mids and highs to main speakers while routing bass through the SUB-OUT—enhancing clarity, detail, and overall sound balance

5.Flexible Sound Customization

Includes bass/treble control with bypass function, and L/R balance knobs for personalized adjustment. Volume memory remembers settings for each input source—giving you a smarter, more convenient audio experience tailored to your taste

Specification

Product model: ZP3
Channel: 2.0
Input interface: RCA x2, XLR
Output interfaces: RCA, XLR, SUB
High and low frequency adjustment range: high frequency (± 6dB), low frequency (± 12dB)
Frequency response:
XLR/RCA
20Hz-20kHz (±0.2dB)
80Hz-20kHz (±0.2dB)
120Hz-20kHz (±0.2dB)
SUB
20Hz-200Hz (±0.2dB)
Input current and voltage: AC 110-240V

Balance line output performance parameters (XLR):
Signal to noise ratio ≥ 112 dB
Dynamic range ≥ 112 dB
Distortion ≤ 0.0007%
Noise ≤ 6 μ V

Single ended line output performance parameters (RCA):
Signal to noise ratio ≥ 115 dB
Dynamic range ≥ 115 dB
Distortion ≤ 0.0008%
Noise ≤ 4 μ V

QA:
Q1:Why aren't the bass and treble knobs working?
Bypass mode may be enabled — in this mode, the signal bypasses the tone control circuit.
 

Q2:Which operational amplifiers can be replaced in the ZP3?

Burson V7V, TI LME49720, JRC4580D, MUSES02, Sparkos SS3602, etc.
Q3:Is the volume knob on the ZP3 an electric potentiometer or an encoder?
The volume knob is a rotary encoder that can rotate 360°, but the volume reaches a maximum limit and further rotation does not increase the volume.



















Payment Policy

Payment Policy – BILLIONS BIRDS

At BILLIONS BIRDS, we are committed to providing a safe, secure, and seamless payment experience for our customers.

1. Accepted Payment Methods

We accept the following payment options:

Major Credit & Debit Cards (Visa, MasterCard, American Express)

Secure Online Payment Gateways (such as PayPal, Stripe, or other providers available at checkout)

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All payments must be completed in full at the time of purchase.

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Prices are displayed in the currency indicated on the website. If you are purchasing from another country, your bank may apply currency conversion fees.

4. Order Confirmation

Once your payment has been successfully processed, you will receive an order confirmation email containing your purchase details.

5. Failed or Declined Payments

If your payment is declined, please verify your billing information or contact your bank. Orders will only be processed after successful payment confirmation.

6. Fraud Prevention

BILLIONS BIRDS reserves the right to cancel or refuse any order if fraud or unauthorised activity is suspected.


Delivery Policy

Delivery Policy – BILLIONS BIRDS

At BILLIONS BIRDS, we are dedicated to delivering your orders safely and efficiently.

1. Order Processing

All orders are processed within 1–3 business days after payment confirmation. Orders are not processed or shipped on weekends or public holidays.

2. Shipping Times

Estimated delivery times vary depending on your location:

Domestic Shipping: 3–7 business days

International Shipping: 7–15 business days

Please note that delivery times are estimates and may vary due to customs procedures, carrier delays, weather conditions, or other unforeseen circumstances.

3. Shipping Costs

Shipping fees are calculated at checkout based on your location and selected shipping method. Any customs duties, taxes, or import fees are the customer's responsibility.

4. Tracking Information

Once your order has been shipped, you will receive a confirmation email with tracking details (if available) so you can monitor your package.

5. Delivery Issues

If your order is delayed, lost, or arrives damaged, please contact us within 7 days of the expected delivery date. We will work with the shipping carrier to resolve the issue as quickly as possible.

6. Incorrect Shipping Information

Customers are responsible for providing accurate shipping details at checkout. BILLIONS BIRDS is not responsible for orders shipped to incorrect addresses provided by the customer.


Refund Policy

Refund Policy – BILLIONS BIRDS

At BILLIONS BIRDS, customer satisfaction is our top priority. If you are not completely satisfied with your purchase, we’re here to help.

1. Return Eligibility

You may request a return within 14 days of receiving your order. To qualify for a return:

The item must be unused, unworn, and in the same condition as received.

The item must be in its original packaging.

Proof of purchase (order confirmation or receipt) is required.

Certain items may not be eligible for return, including clearance items, gift cards, or personalised/custom products.

2. Non-Refundable Items

The following items are non-refundable:

Final sale or discounted items

Gift cards

Items damaged due to misuse, negligence, or improper care

3. Return Process

To initiate a return, please contact our customer support team with your order number and reason for return. If your return is approved, you will receive instructions for returning the item.

Unless the item is defective or incorrect, customers are responsible for return shipping costs.

4. Refund Processing

Once we receive and inspect your returned item:

We will notify you of the approval or rejection of your refund.

If approved, the refund will be issued to your original payment method within 5–10 business days.

Please note that banks or payment providers may require additional time to process refunds.

5. Damaged or Incorrect Items

If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery and provide clear photos of the product and packaging. We will arrange a replacement or full refund at no additional cost.

6. Late or Missing Refunds

If you have not received your refund:

Check your bank account again.

Contact your credit card company or payment provider.

If the issue persists, don't hesitate to contact our support team for assistance.

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