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Description
DSPPA DA-4250: 4x250W Ultra Thin Digital Amp, 70VThe DSPPA DA 4250 is a high performance Class D digital amplifier designed for commercial and industrial public address applications. With a sleek 1U rack mount design, it delivers a powerful output of 4 x 250W, ensuring clear and reliable audio distribution across multiple channels. Features Class D Technology: Provides high efficiency and low heat generation. 4 x 250W Output: Ideal for large venues requiring robust audio support. 70V 100V Output:
The DSPPA DA-4250 is a high-performance Class D digital amplifier designed for commercial and industrial public address applications. With a sleek 1U rack mount design, it delivers a powerful output of 4 x 250W, ensuring clear and reliable audio distribution across multiple channels.
Features
- Class D Technology: Provides high efficiency and low heat generation.
- 4 x 250W Output: Ideal for large venues requiring robust audio support.
- 70V/100V Output: Flexible speaker output options for various installations.
- Balanced and Unbalanced Inputs: Supports both types for versatile connectivity.
- Full Protection Mechanisms: Includes safeguards against clipping, short circuits, high temperature, and overload.
- Compact Design: Slim 1U form factor saves space in rack installations.
- Status Indicators: Visual indicators for power, signal, clipping, protection, and temperature.
Specifications
- Model: DA-4250
- Number of Channels: 4
- Rated Output Power per Channel: 250W
- Input Sensitivity: 775mVRMS (0dBV for balanced input), 100VRMS (100V unbalanced input)
- Signal-to-Noise Ratio (SNR): >80dB
- Input Impedance: 60K ohms (balanced), 20K ohms (priority), 100K ohms (100V unbalanced)
- Channel Separation: >70dB (1KHz)
- Frequency Response: 80Hz - 15kHz (±3dB)
- Total Harmonic Distortion (THD): <0.3% (1kHz)
- Power Supply: AC180-260V / 50-60Hz, DC24V (rated output power -3dB)
- Overall Dimensions (mm): 552 x 510 x 105
- Machine Dimensions (mm): 483 x 435 x 44 (not including legs)
- Gross Weight: 8 kg
- Net Weight: 7 kg
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Love
Size: 11.8 Ounces
Perfect size for making my Fredo cappuccino every morning. Throw it in the dishwasher look brand new everytime
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Reviewed in the United States on December 18, 2025
★★★★★ 5
Very nice product. Made of high quality.
Size: 20 Ounces
Product is just what i ordered. Recommend to anyone to purchase from this vendor.
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Reviewed in the United States on November 12, 2025
★★★★★ 5
Authentic flavor
Size: 20 Ounces
Exactly as the website says. Very strong and very easily to enjoy every single moment.
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Reviewed in the United States on January 29, 2026
★★★★★ 4
The quality looks quite good considering where it was manufactured.
Size: 11.8 Ounces
Looks great, haven’t used the machine yet. However, it arrived timely and it looks to be
Very nice piece of equipment. I look forward the first cup.
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Reviewed in the United States on October 21, 2025
★★★★★ 5
Great product, thoughtful design, great customer service
Color: Black, Size: 40 oz
I don't write a lot of reviews, but I felt like this product deserved one. This is an excellent cold brew maker. It is very easy to use and has a great 1,200 mL capacity. The plastic construction is more versatile (less fragile) than other brewers made from glass. The filtration system eliminates the sludge that other brew systems leave. The packaging is very thoughtful - a scoop and sponge are included. The scoop is easily overlooked, but it is the perfect size to clean the used grounds out of the filter. The sponge is an unexpectedly useful form factor to help with cleaning. Hopefully the sponges can be ordered separately, since sponges don't last forever.
Some minor downsides:
Cleaning is moderately easy, but the only component that is recommended for the dishwasher is the pitcher (which is also easiest to clean by hand). All of the other elements are recommended for hand washing, which doesn't take long.
The way the filter is configured, the pitcher will work most effectively if stored (at least for part of the brew cycle) on its side. However, there is a vent in the lid that is prone to leaking when the pitcher is stored on its side. Brewing upright can lead to the top grounds not getting exposed to water.
Unfortunately, one of the pieces broke during routine use after a couple of months: the pitcher lid is attached with a couple of hinges that snap the lid into place on the pitcher. One of the hinge attachments broke. I contacted customer service and a replacement pitcher arrived four days later. I'd recommend being careful with these hinge attachments as they seem prone to break. At the same time, the customer service is very responsive and suggests that they take support of their products seriously.
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Reviewed in the United States on May 1, 2025
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