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Basic Information
Product Name PRO DI
Sale Price Php 7,400.00
Consumer Price Php 8,200.00
Mileage Points :74.00

수량 수량증가수량감소
Product Code P0000JGJ
Product Details Passive Direct Box
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1."To be Paid on Delivery" Shipping is still limited to some areas in Visayas and Mindanao via AP Cargo.Shipping Cost may be paid by cash to courier (door-to-door) or upon branch pick-up. Service may expand nationwide in the nearfuture;
2."Pre-pay" Shipping covers countrywide (Philippines). Shipping cost needs to be settled with the item cost prior to shipping of the package.
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Product Details

Radial Engineering ProDI

Passive Direct Box


The Radial ProDI is a passive direct box that combines exceptional audio performance with solid dependable construction, making it the ideal general duty direct box for stage and studio.

The heart of the ProDI is a custom wound Radial transformer. It features an exceptionally high 140kΩ input impedance to reduce loading while enabling the ProDI to handle extreme signal levels at all frequencies without distortion. This is further improved upon with an internal MuMETAL® shield to protect against electromagnetic fields that can cause unshielded transformers to distort.

This compact direct box begins with 14-gauge steel I-beam skeleton for added rigidity and Radial's unique book-end design that creates a protective zone around switches and connectors. Glass filled nylon connectors and high cycle switches combine with the mil-spec PCB and internal RF filtering to provide durability and noise-free performance. A full bottom no-slip pad provides both mechanical isolation and electrical insulation to further protect against the rigors of professional touring.

The ProDI is ideally suited for instruments such as bass guitar, active acoustics, keyboards and just about anything else! When you consider all of the features and the affordable price tag, it is no wonder the Radial ProDI has become one of the most popular direct boxes ever made.

The Radial ProDI… Spectacular performance at a price that anyone can afford!


Compact passive direct box for stage and studio

Able to handle huge transients without distortion

Transformer isolation eliminates noisy ground loops

Plug and play easy to use feature set - on stage or in the studio

ProDI™ Using & Applications

This short guide is written for those who are experienced with pro-audio and direct boxes.

The best feature of the ProDI is its 'plug & play' ease of use. All you do is connect the instrument to the ¼” input, the ¼” through jack to the stage amplifier (if there is one) and the XLR output to the PA or recording mixing console and you are done. Any distortion? Hit the -15dB pad. Any noise? Just depress the ground lift switch to engage the transformer isolation.

ProDI™ Specifications

The Radial ProDI is a professional grade passive direct box that employs the same high quality audio transformer used in the ProD2, ProAV1, ProAV2 and ProD8. Designed to be 'plug and play' easy to use, the ProDI supports a standard feature set that is ideally suited for live touring, yet equally effective for the studio. It is able to withstand exceptional signal levels while delivering a clean, natural tone with minimal distortion of all types.


·         Audio circuit type: ------------------Passive, transformer based

·         Number of channels: ------------------Single channel (mono)

·         Frequency response: ------------------20Hz ~ 18.5KHz (± 0.2dB) 

·         Dynamic range: ------------------128dB

·         Maximum input: ------------------+18dB @ 20Hz

·         Total harmonic distortion: ------------------0.01% from 20Hz~20kHz @-10dB

·         Phase deviation: ------------------1° @ 100Hz; 8° @ 20Hz

·         Input impedance: ------------------140k Ohms, unbalanced

·         Output impedance: ------------------150 Ohms, balanced


·         Transformer: ------------------Eclipse ET-DB2, 12:1 ratio

·         Shield: ------------------Faraday, MuMETAL® can

·         Input pad: -------------------15dB 

·         Ground lift: ------------------Disconnects pin-1 at XLR output

·         XLR configuration: ------------------AES standard (pin-2 hot)

·         Connectors: ------------------1/4" in & thru, XLR-M out


·         Construction: ------------------14 gauge steel chassis & outer shell

·         Finish: ------------------Durable powder coat

·         Size:  (W x H x D) ------------------70 x 108 x 44mm (2.75” x 4.25” x 1.75")

·         Weight: ------------------.54kg (1.2lbs)

·         Shipping size: W x H x D: ------------------102 x 76 x 165mm (4.00" x  3.00"  x 6.50")

·         Shipping weight: ------------------0.61 kg (1.35 lbs)

·         Power: ------------------       Passive, no power required

·         Conditions: ------------------For use in dry locations only between 5°C and 40°C

·         Warranty: ------------------Radial 3-year, transferable


1. Payment by bank transfer with bank account.(ex.BDO, Metro Bank, etc)

2. Payment via PayPal account : PayPal verified account is required.

3. Payment by credit or debit card via PayPal(Visa, Master, JCB, Amex etc.) : PayPal account is NOT required.

4. Payment by credit card(Visa, Master, JCB, Amex etc.) :3D verified credit cards only are eligible for payment by credit card.

5. Payment by bank transfer without bank account.(ex.LBC, Western Union, etc)


 For payment by bank transfer without bank account, the customer may pay by internet banking or telephone banking. The customer may also make payment at local banks. The name of the depositor is required to match the name registered as the depositor when placing the order. Payment shall be made within 7 days from placing the order. The order will be automatically cancelled otherwise.

*Important: All Prices in the website are subject to change without prior notice


  • Shipping method : LBC, 2GO, Fedex, DHL, EMS, Air21, AP Cargo, JRC, etc
    Covered destinations : Nationwide
    Shipping cost : may vary on destination and purchase amount
    Shipping time estimate : 2~6 business days(in case of in-stock products)
    Shipment bound for EMS premium regions : The customer may be required to pay additional cost.

    *Important : Products are to be shipped after the payment is made. Please note that shipping may take longer depending on the products of the order.

     International shipments may be subject to import taxes, duties and customs fees, which are levied once your package reaches the country of destination, and are the responsibility of the recipient. In case that the customer refuses to receive the parcel, the products are to be returned to Philippines and will not be shipped again. According costs(shipping, customs and etc) are the responsibility of the customer and will be deducted from the refund.

Returns & Exchanges

  Please make sure you have selected right options(e.g. size, color and quantity) prior to completing the order.
Once the order is completed, it is assumed that the customer agreed on our exchange/refund policy.
Exchanges and refunds are accepted only if the exchange/refund request is proven valid for the following reasons.


Eligible for exchanges and refunds:
On condition that the package (Labels, tags) of the products are intact.
-       Sold out products
-       Wrong item delivered
-       Defective products

-       Shoddy Goods

Ineligible for returns and exchanges:
-       Products with customer-induced damages
-       Products whose value is decreased significantly due to elapsed time or other reasons and are not in condition for re-sale
-       Change of mind

* (Please contact us or Email customer service for details)


Exchange/refund procedure
For exchanges/refund, the customer is required to post an exchange/refund request on the “Q&A” board.

The request is to include the reason for exchanges/refunds and the order number.
In case of exchange/refund request due to product defects or wrong item delivered, detailed photos of the products are also required. Exchanges/refunds will be made shortly upon careful examination and confirmation on the reported defects. 

The shipping costs occurring from product defects or wrong item delivered are the responsibility of the

>Warranty will repair any product under warranty at no charge or replace the unit of the exact model if deemed necessary.

If repair of returned merchandise is necessary due to neglect, damage, misuse, or improper repair by others, a charge will be made for labor, parts, and return freight.

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