Black Diamond DIA1250.4: 4-Channel Full Range Class AB Amplifier with — Big Jeff Audio Dealer Platform
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Welcome To The Dealer Platform


  • AMAZING POWER - Capable of 1250 Watts Max with high efficiency in mind gives you the best of both worlds. You will have all the power you need while utilizing state-of-the-art technology that requires less energy.
  • WIDE RANGE OF APPLICATIONS - Ranging from 1-4 ohms, this amplifier will allow you to use a variety of speakers for your specific application. Never again will you need to worry about having the right amp for the job.
  • FULL RANGE AMP - If you are looking for an amplifier that can handle the full frequency range then look no further! Wire the most powerful midranges, tweeters, drivers, or coaxial to this full range series.
  • SAFETY - Power, Protection & Clipping LED Lights Status Indicator Short Circuit. Thermal, DC Offset and High & Low Voltage Protection
  • MEASUREMENTS - Length: 10.25" | Width: 6" | Height: 2" | Weight 3.5 lbs.

Black Diamond DIA1250.4: 4-Channel Full Range Class AB Amplifier with 1250 Watts

This listing includes: 

(1) Black DiamondAmplifier DIA-1250.4

Experience the perfect balance of power and efficiency with a maximum output of 1250 Watts, courtesy of cutting-edge technology that prioritizes energy conservation. This versatile amplifier, compatible with speaker impedances ranging from 1 to 4 ohms, eliminates the need for multiple amps to suit different applications. Look no further if you seek an amplifier capable of handling the complete frequency spectrum. Wire your most potent midranges, tweeters, drivers, or coaxials to this comprehensive full-range series. Never worry again about having the right amp for the job.


  • Total Watts (Peak): 1250W

  • RMS Power 2 ohm: 70W x 4

  • RMS Power 4 ohm: 50W x 4

  • RMS Power 4 ohm Bridged: 140W x 2


  • Frequency Response: 20Hz-20Khz

  • Signal to Noise Ratio: >90dB

  • Total Harmonic Distortion (THO): 0.3%

  • Low Level input Range: 0.2-6V

  • X-Over Filter Range: 40-400Hz


  • Compact Size for Easy Installation

  • Stable & Reliable Double Sides PCB layout Design

  • Surface Mount Component Technology

  • Short Circuit. Thermal voltage protection

  • Audio Precision Quality Control Verification

    Package Dimensions (in inches): 

  • Length: 13.0"

  • Width:   8"

  • Height: 4"

Payment Information


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We accept PayPal for all international orders, your address must be verified with PayPal.

We are not responsible for any custom duties or brokerage fees that may apply for all international orders.

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contract whereby you agree to purchasing the item at the price listed.

If you want to ship your item to an alternate address please add
that address on your PayPal account and use the address as the default
or confirmed address to pay us through PayPal

With Free Same Business Day Shipping we work to get you your order Fast. 


All orders over $500 will require a signature for delivery.

All pre-selected shipping rates and methods are for customers with a
valid residential or commercial address within the Contiguous 48 United
States (PO Boxes address may require additional charges).

P.O. Boxes, APO/FPO addresses, Alaska, Hawaii, Puerto Rico, Guam,
U.S. Virgin Islands, Northern Mariana Islands, American Samoa, Canada,
and other countries may require additional shipping fees. Please contact
a member of our team for detailed shipping charges.

Shipping is available only to PayPal verified addresses. When making
payment please confirm your address has been verified with PayPal. Once
payment is made shipping address can not be changed/altered. Payments
made using an unverified PayPal address will be refunded and order will
be canceled.

We will not accept request to change shipping address once payment
has been made. Please confirm your shipping address is up-to-date and

Typical handling time for orders is 1-business day. We do our best
to ship every package with-in 1 business day of receiving a cleared
payment. In some circumstances additional time may be need, in which
case we will contact buyer.

Shipped orders that are returned by the shipping company due to an
insufficient address or an undeliverable address will be refunded less a
20% restocking fee.

If package is refused or marked undeliverable and returned
back to us by the carrier, you will need to pay the shipping cost in
full to have the package sent back to you or we can refund the money
minus the cost of shipping


If you have not received your package, but the tracking information shows that it was delivered,
please do the following within 36 hours of expected, stated delivery:


Verify the shipping address on the order is the address where you are looking for the package

Look for a notice of attempted delivery

Look around the delivery location for the package, or see if a neighbor has accepted the delivery

Be sure to double check your mailbox and other usual spots for package delivery


If you think that your package has been stolen, we will require a police report since this is now theft.
Once we have a police report on file for the stolen package, we will reship your order.