The Truth about Modern Class D
’Dinky’ in this part of the world means ’small’. Like I said you know exactly what I mean, and yes it means the same in Au. I’m talking about dinky ones the size of cigarette packet, some that can do 120w sometimes with external wall wart smp supplies, some that are shilled on these Audiogon pages. I would bet the 54kg Technics SE-R1 would eat them alive same wattage. at 8ohm |
I’m talking about dinky ones the size of cigarette packet, some that can do 120wMaybe something you don't understand is that the size of a class D circuit board says little about its power. They have to be small in order to keep radiated noise down. So traces are short (less inductance), there are usually at least 4 layers in the board and so on. So a board that is the size of a pack of cigarettes is that way even if it can make more power. Most circuit boards (modules) employ ICs to do most of the class D functions- comparator, drivers for the outputs, high side switches and so on. This helps them be more compact and so less noisy. Our prototype boards make 100 watts and despite being relatively discreet (no dedicated chips) its smaller than a pack of cigarettes too. That's just common sense on the engineering side. I'm sure the actual Technics amplifier circuit is quite compact as well- my guess is that because of its very high switching speed, its even more compact! |
Maybe something you don't understand is that the size of a class D circuit board says little about its power Ralph you've been in the sun too long mate. I understand fully Ralph what you are saying to me, two GaN amps below the same 8ohm wattage. You are saying this 0.9kg 150w Gan amp https://orchardaudio.com/bosc Will not be shamed by this Technics SE-R1 54kg 150w GaN amp https://i.pinimg.com/originals/e1/ce/1a/e1ce1a9c552aa57530ad2804c9067800.jpg Sorry Ralph pull the other one it plays jingle bells🤦♂️ |
"....it plays jingle bells." Damn....how tragic. Hope your voice survived.... Well, until someone somewhere puts these two competing amps between a pair of quality speakers with ditto level cables....and source up to par to the task.... It remains conjecture, and opinion. The 'referee' has already rang the bell once, with a warning to the combatants.... It's still summer in AU...right? |
atmasphere7,984 posts02-26-2020 3:39am The ones around now using GaN’s are either dinky little office type class-D’s or expensive ones that haven’t utilized the technology as far as Technics did.This statement is false. The Technics amplifier is only 150 watts, which is similar power as many of its GanFET competition. asvjerry Well, until someone somewhere puts these two competing amps between a pair of quality speakers with ditto level cables....and source up to par to the task.... Really?? your cred if any just took a big dive too, if you think for one micro second these two 150w Class-D GaN amps could possibly sound as good as each other. https://orchardaudio.com/bosc 0.9kg https://i.pinimg.com/originals/e1/ce/1a/e1ce1a9c552aa57530ad2804c9067800.jpg 54kg |
