3 times Audio signal Boosting Transformer Input Isolation 10K:90K Wide Frequency Response

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HIFI Tube Preamplifier

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3 times Audio signal Boosting Transformer Input Isolation 10K: 90K Permalloy Wide Frequency Response   Model No: WHFR-BV01A   The original designing purpose of this transformer is that there are many low-level signal sources on the market, such as mobile phones, Bluetooth receivers, MP3, tablet and other audio sources, after...
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Important: Import duties, taxes and other customs related charges all are not included into shipping cost . Buyers bear all responsibility for all extra charges incurred (if any).

3 times Audio signal Boosting Transformer Input Isolation 10K: 90K Permalloy Wide Frequency Response

 

Model No: WHFR-BV01A

 

The original designing purpose of this transformer is that there are many low-level signal sources on the market, such as mobile phones, Bluetooth receivers, MP3, tablet and other audio sources, after connect it with power amplifier, the sound quality is generally quiet, and there is not much sound field. To adjust the volume of  amplifier to 2-3 o'clock, then just have a normal volume, this is because the signal driving  ability of preamplifier is insufficient, and need the high gain (larger volume)from power amplifier to improve it, and still the sound quality is not satisfactory. This 3 times audio signal boosting transformer may help you solve the problem.

 

This 10K: 90K permalloy audio transformer, the primary-to-secondary voltage ratio is 1:3, which is not the actual volume increase ratio. According to the conversion formula of voltage ratio and decibel, it calculated dB=20log(U2/U1), so the actual boosted volume is about 9.5dB, the signal voltage of the preamplifier input can be increased by 3 times and the gain of 9.5dB can be achieved without affecting sound quality. It is not easy that the secondary impedance must be increased to match the input impedance of next stage. The output impedance of 90K ohms means more powerful driving capability. Such an excellent transformer is inseparable from an exquisite winding technology and high-quality iron core. Together with imported material, this excellent transformer is manufactured.

 

Suitable for microphone, CD, MP3, MP4, hard disk player, LP, multimedia audio input, the signal is boosted by the isolation transformer signal 3 times to the next stage.

 

WHFTR-BV01A(1)lWHFTR-BV01A(1)l3WHFTR-BV01A(1)l2

WHFTR-BV01A(1)l1

WHFTR-BV01A(1)l6

 

There are 3 options

A.          Single Transformer – only one piece transformer

 

B.          2 Transformer PCB – 2pcs transformers soldered on a PCB without shield cover

 

C.          2 Transformer shield – 2pcs transformers soldered on a PCB within shield cover

 

Features

1. The transformer cover adopts 80% nickel-containing permalloy shield to effectively shield the external electromagnetic wave clutter and other interference. It is filled with high-hardness epoxy resin, and the appearance and excellent index parameters are set. A lot of good products.

2. This audio signal isolation transformer can be used as input, inverting, single-ended to balance, boosting voltage, step-down, passive preamplifier transformers, and has a good effect for boosting, amplification, and isolation .

3. The main effect can eliminate the digital taste sound, and can filter out  AC noise interference caused by the equipment. Used in various professional HIFI preamps, the audio signal is isolated and used to achieve good results.

4. Professional winding method, multi-wire winding/rewinding and sandwich segment winding method on transformer wire and winding method to reduce leakage inductance and distributed capacitance, expand frequency response, plus copper foil shielding anti-interference.

 

Specifications

1. Core material: 85% permalloy containing nickel

2. Shielding method: outer core copper foil shield

3. Frequency response: 30Hz~44KHz (-0.3dB)

4. Input maximum current: 10mA

5. Size: Diameter 48mm * Height 40mm

6. Weight: 0.18kg/pc

 

Shipping

1.Important: Import duties, taxes and other customs related charges all are not included into shipping cost . Buyers bear all responsibility for all extra charges incurred (if any).

2. We only ship to confirmed order addresses. Your order address MUST MATCH your Shipping address. We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

3. When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

4.Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound. The shipping rate can be showed at the Checkout page. There are two options for shippig as below.

A. Standard Shipping(≤2KG): The Post Registered Air Mail, ePacket or DHL Global Mail

B. Express Shipping: EMS, DHL, UPS , or Fedex, Special Route.,etc. For faster shipping and smooth transaction, we will change the shipping company among them

Returns Policy

You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Seller Guarantees

1. One year Manufacturer`s limited Warranty for defective items (excluding items damaged and/or misused after receipt). Accessories come with a 3-month warranty.

2. Defective items MUST BE reported and returned within the warranty period (with the original packaging, if possible). You must tell us what the defect is and give us your order number. WE DO NOT REPAIR OR REPLACE ITEMS WITH AN EXPIRED WARRANTY. You agree to all of the above-listed policies upon ordering on our store.

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