restorer-john
Grand Contributor
The amp module uses only 1 pin each for the +85 and -85... That's a lot of current.
Can't see how that wire gauge looks remotely sufficient for ~20A continuous from the 4 pin SMPS to the amp module.
The amp module uses only 1 pin each for the +85 and -85... That's a lot of current.
Isn't the rise in THD and the early roll-off caused by the Sparkos SS2590 input buffers?
That's rediculous! That means that you can have a total system chain with 21 bits of usable resolution while outputting 1000W to your speakers for less than $ 5000.-. Better yet, at .5% utilisation, this beast still clears 16 bit with flying colours. Hypex, does NOT disappoint!With 3 volts of input which is likely well over 1000 watts, it shot up to 21+ bits of dynamic range! Fantastic!
Isn't the rise in THD and the early roll-off caused by the Sparkos SS2590 input buffers?
Well, no sorry, I don’t know for ahb2, but thx aaa technology for headphone amp, is a circuit assembled on a pcb. At least I can confirm it was that 3 years ago. they tried to sell me a licence and sent me an evaluation board, which consisted of a complete amp. It could have change since.But either way, At the core, it’s the same thing they try to sell, an amplification circuit, that are arguably performing better than what the amp manufacturers can achieve themselves. They both sell to manufacturers, in a business to business model. Both are competing in getting amp makers to use the technology they have to offer in their. products, Now, your Hypex/Nvidia, I do get it, but is Arm is in the licensing business? I tought they sold microcontroller chips, like xmos or other, this reference I don’t get, Isn’t arm a manufacturer in the purest sense? I tought these guys actually buy and sell silicon, like any chip manufacturers?By "manufacturer" I mean engaging business activities that incur costs associated with manufacturing: sourcing, inventory, warranty, support, regulatory compliance and fees, etc. When you make and sell a tangible widget, as opposed to license intangible IP, you're almost in a different line of business. It may not be desirable for THX to take on all of that. I'm not aware of THX being an actual manufacturer of headphone amps; I suspect they merely license a reference design to Drop, Monoprice, SMSL, whom are all more well-positioned to either do the manufacturing themselves or outsource to the ODMs that they surely have.
It would be nice to see the resistors used to drive this amp. Winter's coming soon, so more amps for testing should be a must.Wow! This is from a shared 20 amp outlet where I am powering my computer and Audio Precision and we still get 1.8 kilowatts of continuous power at 1% THD+N. And burst power of 2.3 KW.
I am probably missing your point here, sorry, but from Amir's graphs I understand that sinusoidal power is 1.8KW/4 Ohms @1% THD+N continuous power while peak power is almost 2.3KW. Am I missing something?In that vein, it's Hypex, so I assume 800W means 200W continuous.
There is small print in the Hypex datasheets saying that continuous power is dependent on thermals and may be only 1/5th the rated power. That is why I wrote about people playing full scale sine waves for several minutes uninterrupted and not music, it is an unrealistic and irrelevant signal. If someone is going to test this, then also add a fan on top.I am probably missing your point here, sorry, but from Amir's graphs I understand that sinusoidal power is 1.8KW/4 Ohms @1% THD+N continuous power while peak power is almost 2.3KW. Am I missing something?
However, https://www.hypex.nl/documenten/download/2196 shows Hypes own measurements too.
It may depend on which amp, I have no reason. to doubt NAD statement, I was strictly talking about the m28 that has been review and opened up here. My guess would be that those « optimisations » mean, « we can save money by modifying this » , but who knowsOh, really??
That's interesting. I got it off of NAD's website, but maybe the situation has evolved since this was posted.
View attachment 88649
From here:
https://nadelectronics.com/nad-intros-c-298-power-amplifier-with-purifi-eigentakt-amplification/
Arm is in the licensing businessWell, no sorry, I don’t know for ahb2, but thx aaa technology for headphone amp, is a circuit assembled on a pcb. At least I can confirm it was that 3 years ago. they tried to sell me a licence and sent me an evaluation board, which consisted of a complete amp. It could have change since.But either way, At the core, it’s the same thing they try to sell, an amplification circuit, that are arguably performing better than what the amp manufacturers can achieve themselves. They both sell to manufacturers, in a business to business model. Both are competing in getting amp makers to use the technology they have to offer in their. products, Now, your Hypex/Nvidia, I do get it, but Arm is not in the licensing business, and sell microcontroller chips, like xmos or other, this reference I don’t get, Isn’t arm a manufacturer in the purest sense? I tought these guys actually buy and sell silicon, like any chip manufacturers?
There is small print in the Hypex datasheets saying that continuous power is dependent on thermals and may be only 1/5th the rated power. That is why I wrote about people playing full scale sine waves for several minutes uninterrupted and not music, it is an unrealistic and irrelevant signal. If someone is going to test this, then also add a fan on top.
thanks, did not know that.Arm is in the licensing business
Arm is not in the licensing business, and sell microcontroller chips, like xmos or other, this reference I don’t get, Isn’t arm a manufacturer in the purest sense? I tought these guys actually buy and sell silicon, like any chip manufacturers?