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Looking forward to this. So useful are the endless number of videos that show a dyno and “ooh, missed it’s power # by 5 watts” and now watch it move a sub back and forth… what do we gain from this? I guess if you need exactly 152 watts and looking at an amp that is rated for 150? But I never see anything about useful info. Even 4 channel amps are bridged to the max and “let’s see it move subs at .7 ohm” my first amp was a push button turn on amp from radio shack that buzzed like crazy but made speakers move…. Sounded horrible. I sure wish you had time, money and desire to test more budget minded stuff so us poor saps with 2 daughters and a wife can find the best place to spend the few dollars these ladies let me spend on my silly hobbies. Many many thanks to you and your passion for this hobby.
D4S amplifiers look remarkably similar to U.S Amps in many ways. Are they made by U.S Amps? If so, that is a great quality amplifier in a differently branded, discounted shell.
Nice amplifier and details. Just watched the test vid and it seems to test ok even tho i didn't understand a couple things. Can't wait to see it hooked up and playing in the 3rd vid. My morel 4 ch amp is awful with is hissing sometimes on my tweeter channels. Not sure if its the way the amp is made, installed or if it has a defect. Idk. Definitely need a new amp though so your 3rd vid should cure my curiosity. Thanks again for all the great info.
This is great for u raw cat cause I remember when you came in the game with your zeal and knack to figure out the technology and techniques to help us regular hobbyist figure out how to use room eq and understand what the stuff is we looking at.its cool for your dedication and giving that globally you are being recognized and still humble enough to answer questions you may have covered times before, I'm giving you your flowers and respect for the hobby and all us guys and gals who just wanna know how to get the best sound to our ability, resources and most of all time and you sir understand that. Car Audio is great 😅
I've been waiting for an amp like this. You can run a 3 way front stage, rear fill and subs on one unit! I hope the signal quality is acceptable! We know Big D will put it on the amp dyno!
thank you for the review I’m a fan! More to come! those fans are for the drive ic’s. if you’re using it correctly you’ll never need to use the fan you’re correct
He was referring to how the fans are controlled. Earlier amp models had the fans run constantly, while later models added a temperature sensor to control their speed.
the 6.5 inch midrange i use crossed 1.5 k starts distorting after 5 watts rms . ppl never need too much power for car speakers except for those giant subs .
It depends on how it was measured. If it's 75 dB at 1 watt, then it's maybe slightly below average. Not too bad. If it's 75 dB at full power, then that would be really poor. What's odd is that the signal to noise ratio is 90 dB on channels 9 and 10. Usually it's lower subwoofer channels. It makes me wonder if it was measured at full power.
@@JasonWW2000 I've noticed that usually is more on sub woofer channels. Like the Alpine PDX 5 channel, the sub woofer channel is 120db But let's see....
@@nikosraptis1985I believe the PDX is Alpines top the line amplifier. It makes sense that they would design it for the very best sound quality. Still, I'm doubtful that's a 1 watt rating. Does it say at 1 watt?
Hi I was tempted for a moment when I saw your fb post on this amp. Then I controlled myself and told this is a perfect SPL amp, where as I'm an SQ/L guy. Would love to see you test purifi's amp technology and hear your opinion.
In the States people love this brand. Only because people love cheap power. They basically Korean style amps or used to be. That do rated power but NO ONE has test them for quality of sound or reliability. I can say they last more than 2-3 years so that’s a plus. If you want cheap sound quality in the States I would go with CT sounds for speakers and amps along with subs. But I run Kicker Amps and JL Audio amps with all Infinity speakers and subs.
In this comment, you sound like a brand snob. I think there are many reasons people like this brand and it's not always about the cost. I've even heard people complain JP amps are too expensive.
they don't even give you a sticker. t shirt + sticker cost extra.i have the 5 channel with over 1k on the sub channel but the highs were not to my liking. so i went back with my polk. they are pretty nice looking and that 10 channel may work better
Why? I'd like to see a scientific test to show where the time and effort went if replacing all of them, especially if they all are single ended inputs only anyway and none of them support CMRR
Keyed locks on the inside of a home is insane! Is that normal in Europe? 😬 My concern since having kids has always been that they could escape the house in an emergency without my assistance. Or that anyone can escape the house in a hurry. I know this video isnt about that, but it's the first thing I noticed.
It should be normal if you have a glass window right next to the lock that can be broken and a person reach in to unlock it. If the windows were much further away, I'm sure it would have a moral traditional, hand operated lock.
I am totally reconsidering my set up now. But D4S has the worst webpage I have ever used for car audio. So much that I don’t ever try to look at it on my iPhone and usually look at other companies for products.
The typical customers of the brand may be bassheads, but that does not top the company from innovating and releasing hybrid products that can serve well in an SQ/SQL system😉 Same with SB acoustics drivers, they are designed for home audio use. Faital pro is designed for PA🤷
I think that people forget an amplifier isn't gonna have a huge effect on the sound quality. Speakers, how they are installed and aimed, crossover settings, vehicle acoustics, etc... are all going to have a noticeable impact. The amplifier brand, not so much.
Unfortunately you cant take photos of the crappy low switching frequency, the reason people barely even use class D for use sub 100hz, or all the noise left behind by the switching.
What are you talking about? There are really high-end class d amps built by top companies such as Kicker, Rockford, Alpine, Digital Designs, Arc Audio, Focal, etc... 25 years ago when class D was relatively new we didn't have the chips to produce the high switching frequencies we needed. In the last 10 to 15 years we've had them. You might want to update your info before you leave outdated comments. 👍
@ah4800 Any panel resonance that I can hear, I fix. I've got it so I can listen at fairly low volume and not hear any. Even at medium volume levels I get no resonances that I can hear. At higher volumes I'm usually driving and the sub wants to shake everything, so I live with it. 😂 I honestly don't know what level of distortion I can hear. Once I get all my gear installed I plan to do some critical listening tests between my reference class AB amps and several high end class D amps.
I own a d4sound JP95 Amplifier, and it is powering 2 component sets( 1 set up front, & 1 set in the back), & the sub channel is powering 2-12" subwoofers. This amp sounds great, and has enough power to do over 140Db! It has been going strong for 2 years, on stock electrical. Thanks for a great product d4sound😎
Love the video man, thank you for it!
I always go with the blue to match my channel color theme.
The only blue for me is Alpine blue 💙
Looking forward to this. So useful are the endless number of videos that show a dyno and “ooh, missed it’s power # by 5 watts” and now watch it move a sub back and forth… what do we gain from this? I guess if you need exactly 152 watts and looking at an amp that is rated for 150? But I never see anything about useful info. Even 4 channel amps are bridged to the max and “let’s see it move subs at .7 ohm” my first amp was a push button turn on amp from radio shack that buzzed like crazy but made speakers move…. Sounded horrible. I sure wish you had time, money and desire to test more budget minded stuff so us poor saps with 2 daughters and a wife can find the best place to spend the few dollars these ladies let me spend on my silly hobbies. Many many thanks to you and your passion for this hobby.
D4S amplifiers look remarkably similar to U.S Amps in many ways. Are they made by U.S Amps? If so, that is a great quality amplifier in a differently branded, discounted shell.
Your excitement is contagious!..can't wait to see how it all turns out!
Nice amplifier and details. Just watched the test vid and it seems to test ok even tho i didn't understand a couple things. Can't wait to see it hooked up and playing in the 3rd vid. My morel 4 ch amp is awful with is hissing sometimes on my tweeter channels. Not sure if its the way the amp is made, installed or if it has a defect. Idk. Definitely need a new amp though so your 3rd vid should cure my curiosity. Thanks again for all the great info.
This is great for u raw cat cause I remember when you came in the game with your zeal and knack to figure out the technology and techniques to help us regular hobbyist figure out how to use room eq and understand what the stuff is we looking at.its cool for your dedication and giving that globally you are being recognized and still humble enough to answer questions you may have covered times before, I'm giving you your flowers and respect for the hobby and all us guys and gals who just wanna know how to get the best sound to our ability, resources and most of all time and you sir understand that. Car Audio is great 😅
I can't wait to see the measurements for thd.
Video comes out tomorrow😉
yes! i can't wait for the tests. all anyone else does is amp dynos. have been curious about D4S sound q.
I'm running the JP 95 in an SQ setup and have been very pleased
I've been waiting for an amp like this. You can run a 3 way front stage, rear fill and subs on one unit! I hope the signal quality is acceptable! We know Big D will put it on the amp dyno!
Can't wait for the ez dsp measurements. I plan on integrating it into my system.
They are out in the group
Just a few basic ones. I will make a full set, testing analogue, digital and BT.
Very interested to see now this performs.
thank you for the review I’m a fan! More to come! those fans are for the drive ic’s. if you’re using it correctly you’ll never need to use the fan you’re correct
He was referring to how the fans are controlled. Earlier amp models had the fans run constantly, while later models added a temperature sensor to control their speed.
Very cool mr.cat!!!
the 6.5 inch midrange i use crossed 1.5 k starts distorting after 5 watts rms .
ppl never need too much power for car speakers except for those giant subs .
It looks amazing! My concern is about the 75dB SNR! Is this too low especially for the tweeters for not hissing too much? Cheers
I can tell you that when I'll hook it up😉
It depends on how it was measured. If it's 75 dB at 1 watt, then it's maybe slightly below average. Not too bad.
If it's 75 dB at full power, then that would be really poor.
What's odd is that the signal to noise ratio is 90 dB on channels 9 and 10. Usually it's lower subwoofer channels. It makes me wonder if it was measured at full power.
I spotted that as well, waiting for next video to see whether tweeters hooked up to a 150w channel and gains set accordingly have audible hiss.
@@JasonWW2000 I've noticed that usually is more on sub woofer channels. Like the Alpine PDX 5 channel, the sub woofer channel is 120db
But let's see....
@@nikosraptis1985I believe the PDX is Alpines top the line amplifier. It makes sense that they would design it for the very best sound quality. Still, I'm doubtful that's a 1 watt rating. Does it say at 1 watt?
Imagine if there was a datalink cable from the EZDSP to the EZ amp, with no need for RCA’s! That would be a great feature.
Even a 2x12pin molex could do.
This is one of the only amps I’m looking to get honestly…
Hi
I was tempted for a moment when I saw your fb post on this amp.
Then I controlled myself and told this is a perfect SPL amp, where as I'm an SQ/L guy.
Would love to see you test purifi's amp technology and hear your opinion.
This is not a strictly SPL amp😉 video with measurements coming in a few days.
@@RAW-CAt
Will be waiting for the video.
In the States people love this brand. Only because people love cheap power. They basically Korean style amps or used to be. That do rated power but NO ONE has test them for quality of sound or reliability. I can say they last more than 2-3 years so that’s a plus. If you want cheap sound quality in the States I would go with CT sounds for speakers and amps along with subs.
But I run Kicker Amps and JL Audio amps with all Infinity speakers and subs.
In this comment, you sound like a brand snob.
I think there are many reasons people like this brand and it's not always about the cost. I've even heard people complain JP amps are too expensive.
Amp is probably solid(I have a few D4S amps) but no one has made a video on the darn dsp's themselves.
Next week😉 The DSP is in the UK already, should have it in a couple of days.
@@RAW-CAtAny updates on the controller? I have yet to even see pictures.
they don't even give you a sticker. t shirt + sticker cost extra.i have the 5 channel with over 1k on the sub channel but the highs were not to my liking. so i went back with my polk. they are pretty nice looking and that 10 channel may work better
I would love to see how you make custom rca’s!
Don't worry, I will make a video about that😉
Why? I'd like to see a scientific test to show where the time and effort went if replacing all of them, especially if they all are single ended inputs only anyway and none of them support CMRR
@@minus3dbintheteens60 to make the install cleaner. Custom lengths without bulky connectors 🤷
@minus3dbintheteens60 Light up guy, all your comments or so negative.
Never....
Keyed locks on the inside of a home is insane! Is that normal in Europe? 😬
My concern since having kids has always been that they could escape the house in an emergency without my assistance. Or that anyone can escape the house in a hurry.
I know this video isnt about that, but it's the first thing I noticed.
It should be normal if you have a glass window right next to the lock that can be broken and a person reach in to unlock it.
If the windows were much further away, I'm sure it would have a moral traditional, hand operated lock.
Yes that is very typical.. some people lock the doors only at night🤷 My 4yo knows how to operate a lock, we thought her very early.
UPS driver be like “wtf is this”
I am totally reconsidering my set up now. But D4S has the worst webpage I have ever used for car audio. So much that I don’t ever try to look at it on my iPhone and usually look at other companies for products.
Hmm, it seems fine on Samsung browser. Maybe it's just a Safari issue?
Get rid of the fruity phone then lol
@@ryanamen6397Come on. That's not a proper way to speak to someone.
I’ve ordered multiple times from d4s on my phone never had a problem.
I’ve used it for years on iPhone with no issues.
Great. Now I have another reason to spend more money. 🤣
😂😂😂
Was the import duty expensive?
All paid by D4S.
Also not knock any brand but people who run D4S are straight bass heads. All SPL the whole way. Windows down and blaring.
I disagree.
Even the fact Raw Cat bought one and is not a bass head shows what your saying is inaccurate.
You sound like you are discriminating against a whole group of people.
@@JasonWW2000 okay
The typical customers of the brand may be bassheads, but that does not top the company from innovating and releasing hybrid products that can serve well in an SQ/SQL system😉 Same with SB acoustics drivers, they are designed for home audio use. Faital pro is designed for PA🤷
I think that people forget an amplifier isn't gonna have a huge effect on the sound quality. Speakers, how they are installed and aimed, crossover settings, vehicle acoustics, etc... are all going to have a noticeable impact.
The amplifier brand, not so much.
First!
Unfortunately you cant take photos of the crappy low switching frequency, the reason people barely even use class D for use sub 100hz, or all the noise left behind by the switching.
What is the switching frequency of this amp?
I will be talking about the switching noise in the next video when I am going to measure it.
What are you talking about?
There are really high-end class d amps built by top companies such as Kicker, Rockford, Alpine, Digital Designs, Arc Audio, Focal, etc...
25 years ago when class D was relatively new we didn't have the chips to produce the high switching frequencies we needed. In the last 10 to 15 years we've had them.
You might want to update your info before you leave outdated comments. 👍
No need to be so concerned about clean power in a car. The fraction of a percentage of distortion would never be noticed.
Keep in mind that an automobile can be an even quieter environment than a home.
@@JasonWW2000 that has little to do with it. Panel resonance, traffic etc make it a waste of time for the most part
@@ah4800I don't experience any of those issues when I'm sitting in my parked vehicle doing critical listening.
@JasonWW2000 it happens even if you can't hear it. If you can't hear panel resonance then you can't hear an extra half percent distortion.
@ah4800 Any panel resonance that I can hear, I fix. I've got it so I can listen at fairly low volume and not hear any. Even at medium volume levels I get no resonances that I can hear. At higher volumes I'm usually driving and the sub wants to shake everything, so I live with it. 😂
I honestly don't know what level of distortion I can hear. Once I get all my gear installed I plan to do some critical listening tests between my reference class AB amps and several high end class D amps.
d4s is traaaaaaaaaaaaaaaaash
Any objective reasons to support this claim?
@RAW-CAt you know killshotking has no proof to back it up lol
@@bennyblanco14 dudes tripping. 😆 we make the some of most powerful amplifiers in the class
I own a d4sound JP95 Amplifier, and it is powering 2 component sets( 1 set up front, & 1 set in the back), & the sub channel is powering 2-12" subwoofers. This amp sounds great, and has enough power to do over 140Db! It has been going strong for 2 years, on stock electrical. Thanks for a great product d4sound😎
I roll my eyes at anybody that describes a product as "trash" or "garbage". You know they are trolling.