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Description
ZR 4-Channel Class D Amplifier 4 x 400 Watts Rms @ 4-ohmDS18 ZR1600. 4D ZR Class D 4 Channel Stereo Full Range Car Audio Amplifier 4 x 400 @4 Ohms Watts RMS DS18s ZR series of amplifiers are guaranteed to supercharge your sound system to deliver brilliant sound and bulky bass frequencies. The ZR series was designed to pump up the volume and help your speakers reach their maximum potential as a part of your sound system. These amps offer a surplus of tuning options: the ZR1600. 4D comes with Lowpass, and
DS18 ZR1600.4D ZR Class D 4-Channel Stereo Full Range Car Audio Amplifier 4 x 400 @4 Ohms Watts RMS
DS18’s ZR series of amplifiers are guaranteed to supercharge your sound system to deliver brilliant sound and bulky bass frequencies.
The ZR series was designed to pump up the volume and help your speakers reach their maximum potential as a part of your sound system. These amps offer a surplus of tuning options: the ZR1600.4D comes with Lowpass, and Highpass filters to help tune any song to your frequency.
The ZR1600.4D is made to deliver 2 x 1200 watts RMS @ 4-Ohms Bridge, 4 x 680 watts RMS @ 2-Ohms, and 4 x 400 watts RMS @ 4-Ohms giving you the perfect power for your bass.
Key Features
- Digital Class D Full Range Amp
- MAX Wattage: 7200w Peak
- RMS Wattage: 2 x 1200 Watts RMS @ 4-Ohms Bridge, 4 x 680 Watts RMS @ 2-Ohms, 4 x 400 Watts RMS @ 4-Ohms
- Frequency Response: 20Hz – 20KHz
- Signal to Noise Ratio: >90dB
- Efficiency at 4-Ohms: 82%
- Total Harmonic Distortion: 1%
- Input Range: 0.2v - 6v
- Selectable X-Over: FULL/LPF/HPF
- LED Indicator: Clipping, Power, Protect
- Power and Ground Terminal: 0 Ga
- Minimum Impedance: 2 Ohms (Stereo) / 4 Ohms (Bridge)
Great for:
- Car Audio
- Pro Audio
- Off Road
- Motorcycles
- Stunt Walls
- DIY Projects
Technical Details
| Specifications | |
| POWER | |
| Total Watts (Peak) | 7200W |
| RMS Power @ 4 ohm | 4 x 400W |
| RMS Power @ 2 ohm | 4 x 680W |
| RMS Power @ 4 ohm Bridge | 2 x 1200W |
| AUDIO | |
| Frequency Response | 20Hz-20KHz |
| Signal to Noise Ratio | >90dB |
| Efficiency @ 4ohm | 82% |
| Damping Factor | 160 |
| Input Impedance | 20K ohms |
| Channel Separation | 60dB |
| Total Harmonic Distortion (THD) | 1.00% |
| Low Level Input Range | 0.2-6V |
| High Level Input | No |
| Selectable X-Over | FULL/LPF/HPF |
| X-Over Filter Range | 40Hz-4KHz |
| Bass Boost Range | No |
| Bass Boost Frequency | N/A |
| Infrasonic Filter | No |
| Phase Selector | No |
| FEATURES | |
| Amplifier Class | Digital |
| Amplifier Type | Stereo Full Range |
| Number of Channels | 4 |
| Minimum Impedance | 2 ohms (Stereo) / 4 ohms (Bridge) |
| Led Indicator | clipping/protect/power |
| Power Input Terminal Size | 0ga |
| Fuse Size | 280A |
| Remote Level Control | No |
| Cooling Fan | No |
| Voltmeter | No |
| Thermal Protection | Yes |
| Over-Load Protection | Yes |
| DC Output Protection | Yes |
| Short Circuit Output Protection | Yes |
| Voltage Input Protection | Yes <9 / >16 Volts |
| Clipping Protection | Yes |
| Body Color / Finish | Black Aluminum Brush |
| MEASUREMENT | |
| Overall Length | 12.83" / 326mm |
| Overall Wide | 7.24" / 184mm |
| Overall Height | 2" / 53mm |
| Heatsink Length | 11.45" / 291mm |
| Gross Single Unit Weight | 6.18 LB |
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4.0 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 3
Steamy with Some Good Character Development, But a Little Cliche and Unbelievable
Format: Kindle
This book tells the story of Grace and (Johnny) Logan, a couple who hook up right away and then fall in love as Logan has to make up for the fact that he initially rejects the idea of getting more serious with Grace. The plot is pretty flimsy, although there is decent development of outside conflict, including Logan's alcoholic father and his struggles with his potential hockey career. There are some very steamy scenes--lots of them, actually-- and some cute moments, but in the end, this isn't a particularly memorable story.
To be honest, I have a love/hate relationship with this series (I read the first one, too). On one hand, I think Elle Kennedy is a good writer with a flair for dialogue who knows how to script a steamy love scene. She also does a solid job for the most part in fleshing out her main characters, even if supporting characters often seem like walking cliches ("The Overprotective Dad" vs "Alcoholic Dad"; "Rebellious Best Friend" vs. "Straight-Laced Best Friend"). There are a lot of genuinely funny lines, too, even if they're sometimes of the stereotypical frat boy variety (as a lot of the characters are stereotypical frat boys).
Speaking of stereotypical frat boys, this dovetails into what I hate about this series. I have to admit to not being a fan of the Greek system in general so that may be a bias that's affecting my reading experience, but there's something over-the-top and a little disconcerting about the way Kennedy depicts both the sex-fueled parties and the conversations between the guys about their sex lives. I'm not saying her portrayal of Greek life is entirely unrealistic, but the scenes have a cliched, obvious feel, and although she means to set a sexy tone, there's something icky about the way these guys get whatever they want, whenever they want it (and it's not just sex on demand, but apparently amazing sex with hot women on demand). All the guys are gorgeous horn dogs who get drunk but never seem to be anything less than smoking hot and cool. Oh, and apparently, all this partying doesn't negatively impact their training regimen). Most of the girls throw themselves at them, either alone or in pairs. Plus, in both books, I had some trouble believing that the heroines really hung out at frat parties and knew the athletes by name. Both Hannah and Grace (and even Ramona, for that matter) struck me as young women more apt to avoid frat parties and maybe hang with the multitude of other non-Greek members who populate a college campus and host off-campus parties. (To that end, how about a hook-up between one of these athletes/frat boys and a young women who has no interest in an athlete/frat boys? I went to a big school, and at least two thirds of the campus probably couldn't identify one athlete by name.)
Ultimately, I enjoyed aspects of this book and liked the main characters by the end of the novel (Logan wasn't that appealing for about half of the story, but I warmed to him eventually). And it definitely is more expertly plotted and well written than a lot of other NA novels out there. But if this series is to continue, I'd like to see the formula shaken up.
Grade: C+
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Reviewed in the United States on May 23, 2016
★★★★★ 5
HOT AND HEAVY!
Format: Kindle
Awesome read! It’s was funny, sexy, dramatic, endearing. Great story and plot line. Loved it! About to read the score now.
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Reviewed in the United States on May 31, 2026
★★★★★ 4
I finally took the plunge. A satisfying star read
Format: Kindle
What a chicken I was to leave off reading this book for YEARS because I couldn’t cope with Logan’s “situation” (no spoilers!) & how it could possibly be sorted in his own book. Oh ye of little faith! Elle Kennedy isn’t a #1 author by CHANCE! Oh no, that is TALENT baby! She took the end of book one, ran with it, then flipped that mother sucker on its head to dig deeper into Logan and learn about Grace. These two were definitely made for each other.
The story spans from one school year to the next and we get lots of context too. There are some side characters that I’m not sure o know why they were added as they didn’t add to the story and a particular side character that really needed an ending as she just disappeared. Why was she so unhappy? What was she getting into off page? Was she ever forgiven?
The s story seemed to end abruptly, and that threw me off a bit. I kept going like I was gonna flip another page, and that was the end! Besides the fact of feeling like there are so many things left unsaid this was a good book. Definitely liked book one more but that could also be because the show just came out on prime but nahh, I loved to book one even a decade ago, and it’s still amazing to this day!
The hard part of this was the female narrator on the portions when I listened…Lorelei Avalon, she was NOT CAST properly in my opinion at all. She’s not a bad narrator, she’s just not suited, even remotely, for a late teens early 20-year-old college student. Her voice is more for characters late 40s early 50s in my opinion. I’m glad on book 3. It looks like we changed the narrator so I hope to mostly listen to that one. As always, Lee Samuels did a phenomenal job. He’s been in the game for a while, so maybe that’s what helps make it right for him. But he definitely knew how to change the nuances of his voice to suit whatever character he was reading at that time.
All in all, this was a really good book that I’m sad. I waited so long to read. Thanks to campus diaries coming out on TV? I’m ready to finally finish up this series! Book 3 here I come!!
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Reviewed in the United States on May 28, 2026
★★★★★ 5
🎧
Format: Paperback
The start of this book had me nervous but I ended up really loving this book! I loved how aware Logan was to what he was doing to Grace and stopped it even though it hurt to read. I loved that Grace made him WORK for her forgiveness and some parts were even SO funny. I loved all four of the guys and their great banter. My sweet baby Logan really was going through it in his personal life and his story resonated so much with me. I cried multiple times while reading and cried happy tears at the ending. It was perfect and exactly how I hoped it would end.
🎧 The narrators did a fantastic job with the dual narration.
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Reviewed in the United States on May 17, 2026
★★★★★ 4
*MILD SPOILERS*
Format: Kindle
this was amazing!!! i loved the characters and the writing is a lot better than most of its sport-romance-book counterparts. the worst part of it for me was the climax, i felt as though the FMC’s actions did not match her personality type. he is unsure about their relationship and is worried that she will leave him due to the seemingly bleak and boring future ahead of him. he voices this to her and she gets mad. mind you, this man had to grovel and beg and complete tasks for a single DATE. like girl, if we had been dating for 2 months and i had to do all that to get a date, i would be insecure too. it was quick so easily ignorable, but still bumped it down a star.
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Reviewed in the United States on May 20, 2026