Ooops...I jumped the gun on the specs regarding PWM that the Nuprime has the highest switching frequency at 700kHz. I was incorrect. My apologies for the slip. As George has already pointed out the Technics SE-R1 switches at 1.5 millionHz over double the Nuprime but after comparing both pieces, the Nuprime is a superior design with higher power output and far more efficient and runs cool. I thought Class D has evolved to the point where heavy amps are a thing of the past. So Technics puts out a Class D amp that weighs 119 lbs., runs hot with three heat sinks and four vents on top. Thats not very good engineering compared to Bel Canto, Mola Mola, and Nuprime. The Technics looks more like a hybrid AB/Class D amp.
NUPRIME EVOLUTION ONE-BEST CLASS D AMP ON THE MARKET
I'm not salesman, just a senior audiophile and I have decided in recent months that I'll never go back to conventional AB
amps since its prehistoric technology going back 50 tears. The subject here is currently the worlds finest Class D amp in its price range and beyond, right behind Patrik Bostroms' massive Class D Marten M amplifier. I wouldn't waste my time with Brunos' Mola Mola Kaluga, since the Nuprime technology is newer and has moved further on. The Evolution One has technology that is a first in the industry. Ten years ago, the real problem with Class D amps and today as well, is that their transistor switching modulators operate at a frequency around 300khz which is to low causing feed back problems to the upper frequency's resulting in cold hard sound from the tweeter. Brunos' Kaluga switches at 500khz which is still not good enough, resulting in the Evoultion One being the only Class D amp in the world to switch modulate at 700khz. Also, the only Class D amp on the market with an input impedance of 1 million ohms. Phew! So the issue of working with different Preamps is redundant and completely irrelevant and will work perfectly with any Preamp on the market, tube or solid state. Their switching amps are custom designed in house and are patented. For those concerned about speaker 2 ohm impedance loads read the recent review in Totally Wired where the Monitor Audio Studio's were used and are 2 ohm loads and the amps ran cool. Also, legendary circuit engineer Demian Martin from Spectral has been an ongoing consultant for the company.
amps since its prehistoric technology going back 50 tears. The subject here is currently the worlds finest Class D amp in its price range and beyond, right behind Patrik Bostroms' massive Class D Marten M amplifier. I wouldn't waste my time with Brunos' Mola Mola Kaluga, since the Nuprime technology is newer and has moved further on. The Evolution One has technology that is a first in the industry. Ten years ago, the real problem with Class D amps and today as well, is that their transistor switching modulators operate at a frequency around 300khz which is to low causing feed back problems to the upper frequency's resulting in cold hard sound from the tweeter. Brunos' Kaluga switches at 500khz which is still not good enough, resulting in the Evoultion One being the only Class D amp in the world to switch modulate at 700khz. Also, the only Class D amp on the market with an input impedance of 1 million ohms. Phew! So the issue of working with different Preamps is redundant and completely irrelevant and will work perfectly with any Preamp on the market, tube or solid state. Their switching amps are custom designed in house and are patented. For those concerned about speaker 2 ohm impedance loads read the recent review in Totally Wired where the Monitor Audio Studio's were used and are 2 ohm loads and the amps ran cool. Also, legendary circuit engineer Demian Martin from Spectral has been an ongoing consultant for the company.
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- 103 posts total
Cherry Amps have been well reviewed for their sound characteristics... here is an interesting article... they have switching frequencies up to 2mhz and bandwidth.. depending on the amp at either 100 kHz or 150 kHz. https://positive-feedback.com/interviews/tommy-obrien-digital-amplifier-co/ |
- 103 posts total