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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
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.3 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
5 stars
Format: Paperback
Great book.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026
★★★★★ 4
Content is better than the title!
Format: Paperback
The best quality of Heiser as a scholar/writer in my opinion is that he appreciates the academy but does not acquiesce to its influence. This is seen most in his correct interpretation of the identity of the sons of God in Gen 6 and the identity of Satan in Is 14 and Ez 28 etc. which were long abandoned and scorned by the academy.
All 60 articles are well written with clarity and brevity!
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Reviewed in the United States on December 6, 2019
★★★★★ 5
Great Read
Format: Paperback
An outstanding collection of thought provoking essays. This makes a great daily 5-10 min read.
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Reviewed in the United States on February 14, 2026
★★★★★ 5
Read all of his books, you won't be dissapointed.
Format: Paperback
I love Dr. Heiser books, but I wanted to step back from the spiritual realm and reconnect with scripture again. This book is light, easy to read, and like all his content, so eye opening. I am alway slapping myself in the forehead and wondering how I didn't know or notice things. "I Dare You Not to Bore Me With the Bible" is another of his books that I'm reading simultaneously. If you want to go deeper in Bible Study, this is the book. It's helped me forgive a lot of the Bible "hangups" I have that were very cultural or significant for reasons I missed. Get those 2 books (this and the one I mention above), and then when you're ready to really have your understanding of G-d and the Bible blown out of the water, move on to Unseen Realm, Reversing Hermon, Supernatural, and all of the others. If you desire to understand the Bible, and not just show up on Sunday, read everything by Dr. Michael Heiser, his website is a great resource too. So grateful for the work he does.
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Reviewed in the United States on May 6, 2021
★★★★★ 5
Great Read
Format: Paperback
Just started reading it, but seems like it’s going to be very good.
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Reviewed in the United States on October 14, 2025