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Description
Image Dynamics SQ800.4 800W RMS 4-Channel Full Range Digital SQ Series AmplifierIR Full Range Digital SQ Series Amplifiers feature the latest International Rectifier (IR) circuitry delivering more power without rollback, providing more power on demand in a compact design without sacrificing the precise sound quality and reliability demands of the most discerning audiophile. IR, a leader in PWM circuit design, has worked in conjunction with Image Dynamics engineers to produce the most stable power output possible with minimal RF
IR Full Range Digital SQ Series Amplifiers feature the latest International Rectifier® (IR) circuitry delivering more power without rollback, providing more power on demand in a compact design without sacrificing the precise sound quality and reliability demands of the most discerning audiophile.
IR®, a leader in PWM circuit design, has worked in conjunction with Image Dynamics engineers to produce the most stable power output possible with minimal RF interference and improved sound quality. From the precision clicks of the rotary settings to the sleek lines of the heat sync the SQ Series amplifiers are the perfect match to power your Image Dynamics sound stage.
- Image Dynamics SQ Series SQ800.4
- Class-D Full Range 2-Ohm Stable 4-Channel Amplifier
- RMS Power Rating:
- 4 ohms: 100 watts x 4 chan.
- 2 ohms: 200 watts x 4 chan.
- Bridged, 4 ohms: 400 watts x 2 chan.
- Total power output: 1600 watts
- CEA-2006 Compliant Amplifier
- Pulse Width Modulated MOSFET power supply
- LED power (green) and protect (red) indicators
- Soft start turn-on
- 4/3/2 or Mono channel operation
- Speaker-level (high-level) inputs
- Preamp RCA outputs to daisy chain multiple amps
- 3-way protection circuitry (thermal, overload, and speaker short protection)
- Silver plated screw terminals
- Silver plated RCA level inputs
- Dual speaker terminals simplify the hookup of multiple speakers
- Heavy duty aluminum alloy heat-sink for extreme heat dissipation
- Input sensitivity: 0.5V-4V
- Frequency Response: 20 - 22,000 Hz
- Total Harmonic Distortion (THD): 0.5%
- Signal to Noise Ration: >94 dB
- Variable high-pass filter: 40 - 250 Hz
- Variable low-pass filter: 40 - 250 Hz
- Variable Bass Boost: 0 to +18 dB bass boost at 40 Hz
- Fuse Rating: 40 A x 2
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
4.1 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
Perfect everyday digital watch
It does not have fancy features, but has everything we need everyday with great quality at reasonable price.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Top quality low budget watch!
The one thing budget watch collectors should know is that this Casio model is the only watch under $25.00 that comes with a mineral glass screen and not that cheap Acrylic plastic screen that scratches easily. It's also a 200 meter WR watch which is about 2 football fields in depth if you love snorkel diving off the coast. The screen visibility of reading the time and other features is outstanding. It also has 4 time zones you can program in , 5 Alarms, count down timer and stop watch. You can set it for 12/24 hours time format. I always order the steel bracelet that comes off another model of this because it not only looks and feels like a top quality watch but also matches the steel bezel. Do not buy the negative display version because it's unreadable.
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Reviewed in the United States on October 6, 2025
★★★★★ 5
Casio's best yet!
Casio is by far the best digital watch company in the world but it just seems like this watch wins it all. The upcoming list is of reasons why I think this Casio watch is the best one you can buy.
Reason One:
The price is unbeatable! I have never seen such a great watch for the price of $13! And coming from Casio you know it won't be a rip off! There are plenty of other Casio watches that can do the same thing that this watch can do for a price twice as much! With a price like $13 nothing can go wrong and it won't be such a bummer is you don't like it overall. 5/5
Reason Two:
The amount of things it can do. This watch is capable of doing world time in twenty different spots worldwide, you are able to bookmark your four most favorite spots (one of them being were you live), it has five different alarms with exceptional sound when it goes off, and it has a timer and stopwatch that can go to up to 24 hours. This watch was obviously built for a busy life style. 5/5
Reason Three:
Its water proof and has ten year battery. This watch is water proof up to 200 meters under water so you definitely won't need to worry about your watch getting destroyed by water. Its ten year battery makes it so that you won't need to replace the battery for quite a long time. 5/5
To sum it up this watch is cheap but not cheaply made, has world time, five alarms, a stopwatch and timer, can go under water for 200 meters and has a ten year battery! This is worth the buy!
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Reviewed in the United States on December 1, 2015
★★★★★ 4
100% functional watch
Light is subpar , but a 100% functional. Digits size is fine (I am 60). Labels could be brighter, but Casio rarely does modifications to these models. My dad has the same model, now over 15 years.
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Reviewed in the United States on March 21, 2026
★★★★★ 5
Great watch.
Great watch, I mean it’s a Casio so that’s not exactly a hard sell but it looks great if this is your style of watch. I have “a few” watches and about 30 Casios this one is a fun design with a lot of functionality.
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Reviewed in the United States on December 2, 2025