That Chip was engineered not far from my home, I just received the dual version with Mono chips board for each channel and a power a 48 volt 12 amp supply . My build will add a capacitor bank to see if the 600 wpc is available also ultra low noise 12 volt for the analog input stage I want to see what it can actually do !!! 🤞 🤞
As always great review and great information. One question will the Burson V7 Vivids fit inside the case or will I have to grab my Dremel and mod the case or buy the connectors that Burson sells that allow you to install them 'sideways'? TIA
There is about 25mm max in height also the 2 opamps are close to each other and some other components so you be the judge. I do not own any. Hope that helps
What about class D amplifiers that have only digital inputs such as TAS6584-Q1. Is this a good solution? Can placing the dac and amplifier in one chip improve the parameters? Perhaps in the future it will be popular to send only digital signals from the streamer to each active speaker separately using differential cables similar to HDMI?
It is a good solution in multi-channel AVR setups and some studio setups. But it's not very good for home stereo use, because nothing really supports it. Try finding a pre-amp with the correct I2S digital signal outputs.
Nice review. A few comments .... 1) I'll bet half your audience crapped themselves when your measuring setup changed scales mid way through the distortion test. We get it... most people won't. 2) Having the chip bolted to the bottom of the case with the fins on top really doesn't help cooling at all. At that point the fins are mostly decorative. Now, if they had mounted the TPA3255's heat spreader to the top of the case, with proper heat grease, that case design would be excellent. 3) I would not use any piece of equipment that has mode switching (mono/stereo and full/sub) on the front. These things, along with their adjustments, belong either on the back panel or the bottom of the amplifier where it is far less likely that curious fingers will cause problems. That is ... we know not to mess with these things... but the kids and half drunk friends do not. I wish I had a dollar for every service call that starts with someone asking: 'What does this do?"... I see a competent board design, and typical TPA3255 behaviour but, as usual, the case design and layout is far more indicative of "feature loading" (trying to look impressive) than anything else.
How are you able to test Class D with Audio Analyzer? Is that something only version 3 can do? I have the version 2 of the Analog Discovery hardware and when I put it on a TI-chip based Class D amp it just completely bugs out trying to run tests, even on a little 16W unit that I'm running.
You need to make your own Input output board you can not use the Digilent one as it connects left and right Chanel as well as input ground together. in my Video as well as on the Audio analyser suite site there is a how to build it section.ruclips.net/video/4MvWHeI393Y/видео.html
@Gabster has the right idea. The problem with standard inputs is that the output from these little amps is in "BTL" (Bridge Tied Load) mode and both the plus and minus speaker connections have active, opposing phase, output signals on them. You need a differential input to read them properly. Alternatively if you have a dual channel (or better) scope you can tie one channel to the plus, the second to the minus and then set the scope to show you A-B on the display. Grounding one or the other will likely send the chip immediately into protection and could cause it to fail outright.
Hi Ralph Sorry to hear Ralph I never had any issues with my sample you must have gotten a bad unit I would simply return it. Please Note I am not affiliated to the manufacturer, but if a few people start reporting issues that will give us more clues if it is a common issue or a 1 or 2 off.
I also had some issues with the one that I originally got. the only way I can describe my issue is that the front/back imaging was off. All instruments and vocals where literally on top of each other or at the very least at the same level on a straight line. I returned it and the one the replacement is just fine.
Thanks for the heads up. I'm not really in need of an amp, but at that price, I couldn't help but order one!
Thanks for this video !
Insane price if it comes with that 48v power supply for sure! Thanks for sharing, Gabby. 👍
Thanks for watching!
That Chip was engineered not far from my home, I just received the dual version with Mono chips board for each channel and a power a 48 volt 12 amp supply .
My build will add a capacitor bank to see if the 600 wpc is available also ultra low noise 12 volt for the analog input stage I want to see what it can actually do !!!
🤞 🤞
As always great review and great information. One question will the Burson V7 Vivids fit inside the case or will I have to grab my Dremel and mod the case or buy the connectors that Burson sells that allow you to install them 'sideways'? TIA
There is about 25mm max in height also the 2 opamps are close to each other and some other components so you be the judge. I do not own any. Hope that helps
@@Gabster1 Thanks it does help. The v7 is 20mm high (according to Burson's specs page) that gives me 5mm clearance.
What about class D amplifiers that have only digital inputs such as TAS6584-Q1. Is this a good solution? Can placing the dac and amplifier in one chip improve the parameters? Perhaps in the future it will be popular to send only digital signals from the streamer to each active speaker separately using differential cables similar to HDMI?
It is a good solution in multi-channel AVR setups and some studio setups.
But it's not very good for home stereo use, because nothing really supports it. Try finding a pre-amp with the correct I2S digital signal outputs.
Nice review. A few comments ....
1) I'll bet half your audience crapped themselves when your measuring setup changed scales mid way through the distortion test. We get it... most people won't.
2) Having the chip bolted to the bottom of the case with the fins on top really doesn't help cooling at all. At that point the fins are mostly decorative. Now, if they had mounted the TPA3255's heat spreader to the top of the case, with proper heat grease, that case design would be excellent.
3) I would not use any piece of equipment that has mode switching (mono/stereo and full/sub) on the front. These things, along with their adjustments, belong either on the back panel or the bottom of the amplifier where it is far less likely that curious fingers will cause problems. That is ... we know not to mess with these things... but the kids and half drunk friends do not.
I wish I had a dollar for every service call that starts with someone asking: 'What does this do?"...
I see a competent board design, and typical TPA3255 behaviour but, as usual, the case design and layout is far more indicative of "feature loading" (trying to look impressive) than anything else.
Great observations
Could you compare to the Hypex plate amps?
How are you able to test Class D with Audio Analyzer? Is that something only version 3 can do? I have the version 2 of the Analog Discovery hardware and when I put it on a TI-chip based Class D amp it just completely bugs out trying to run tests, even on a little 16W unit that I'm running.
You need to make your own Input output board you can not use the Digilent one as it connects left and right Chanel as well as input ground together. in my Video as well as on the Audio analyser suite site there is a how to build it section.ruclips.net/video/4MvWHeI393Y/видео.html
@Gabster has the right idea.
The problem with standard inputs is that the output from these little amps is in "BTL" (Bridge Tied Load) mode and both the plus and minus speaker connections have active, opposing phase, output signals on them. You need a differential input to read them properly.
Alternatively if you have a dual channel (or better) scope you can tie one channel to the plus, the second to the minus and then set the scope to show you A-B on the display.
Grounding one or the other will likely send the chip immediately into protection and could cause it to fail outright.
I bought one of these based on your review, didn't work right out of the box. not impressed at all.
Hi Ralph
Sorry to hear Ralph I never had any issues with my sample you must have gotten a bad unit I would simply return it.
Please Note I am not affiliated to the manufacturer, but if a few people start reporting issues that will give us more clues if it is a common issue or a 1 or 2 off.
I also had some issues with the one that I originally got. the only way I can describe my issue is that the front/back imaging was off. All instruments and vocals where literally on top of each other or at the very least at the same level on a straight line. I returned it and the one the replacement is just fine.