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Old 16th March 2015, 11:20 AM   #1
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Default Most ultimate sounded Class-D Amplifier - Overview wanted

which currently available class D amp models sounds like the best available analog class A amp, e.g. like Halcro, PassLabs or Thorens TEM3200 ?
I am looking both to commercial products, module versions like ICEpower, Tripath or Hypex UcD and diy projects.
Thank you for advices.
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Old 16th March 2015, 02:03 PM   #2
tvi is offline tvi  Australia
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Sharp SM-X200
Click the image to open in full size.

patents
JP2005304062
JP2001230672

The smaller SX-100 analogue section
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File Type: png SM-SX100 amp.png (41.4 KB, 1233 views)
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Old 16th March 2015, 02:35 PM   #3
The Dastardly Dad of Three
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How or where in blazes does the audio signal get into that analogue section ??
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Old 16th March 2015, 07:57 PM   #4
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Quote:
Originally Posted by kasey197 View Post
How or where in blazes does the audio signal get into that analogue section ??
From the top, feeding into R605 and R606.
The OP amps are just DC-servos.
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Old 17th March 2015, 12:47 AM   #5
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Ah yes thanks - you can just make out the junction "dot" at the junctions of r637 n 638
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Old 22nd March 2015, 12:35 PM   #6
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Quote:
Originally Posted by tvi View Post
Sharp SM-X200

patents
JP2005304062
JP2001230672

The smaller SX-100 analogue section
Thank you. But Google provides only this thread here.
Mean you one of Sharp's old SM-SX series?
http://www.avguide.ch/testbericht/ne...sharp-sm-sx100 (German)
http://www.salonav.com/arch/2003/12/...12/052-069.htm measuring results SM-SX100 russian language)
SHARP ƒfƒWƒ^ƒ‹ƒAƒ“ƒvSM-SX200‚フŽd—l ƒVƒƒーƒv
SHARP ‚PƒrƒbƒgƒAƒ“ƒv SM−SX200 ƒoーƒWƒ‡ƒ“ƒAƒbƒv・ƒ‚ƒfƒ‹ SM-SX300 “ッ“™•i|ƒnƒCƒGƒ“ƒhƒIーƒfƒBƒIƒVƒ‡ƒbƒv ƒzーƒ€商‰
SM-SX1 Features and Specifications

in the same time area was in production WADIA's PowerDac for US-$ 80.000 (maybe powerdac 790?)
Power DAC (like Wadia) full digital amp
http://www.stereophile.com/news/10408/
http://hifi-advice.com/images/wadia%...inside%203.jpg
Used sharp sm-sx200 Amplifiers for Sale | Hifi Shark, Second Hand Hifi Insight

Unfortunately I don't find listening tests on the web both from Sharp and WADIA.

A friend of me is convinced, the approaches for Class-D from diyaudio-member Bruno Putzeys - go to
http://www.diyaudio.com/forums/searc...archid=9420625
provides the best sonic results. Which commercial products uses those approaches? Maybe Hypex UcD's and Sanyo's ICEPOWER modules?
Thank you for additional informations.

Last edited by tiefbassuebertr; 22nd March 2015 at 01:03 PM.
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Old 22nd March 2015, 01:26 PM   #7
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a harder look on the web let me find this test review from Sharp's SM-SX200
Sharp SM-SX100 digital integrated amplifier | Stereophile.com
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Old 29th March 2015, 02:22 AM   #8
Shinja is offline Shinja  Japan
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Zetex DDFA
It is a digital PWM(fully digital) amplifier with analog feedback. I think it was great breakthrough in technology and performance.
Recently Denon adopted DDFA in PMA-50 and it is the best seller in japan now.
It looks it is a very good chipset but why such not popular?
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Old 28th July 2015, 02:47 PM   #9
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in this case this thread is also of interest:
Ultimate sounded Class D for diy without custom made IC's like Tripath TA2020
Are there advices to find on the web, which companies use class D modules from Hypex, B&O/SANYO (ICEPOWER) and L C Audio Technology ("ZapPulse 800XE") in their amplifiers ?
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Old 29th July 2015, 03:59 PM   #10
Bare is offline Bare  Canada
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This?
Brand New NAD M22 (Hypex) cheaper than DIY ?
Why the perennial fascination with D types?
At best they come close to older type Amplifiers. Often/usually they don't. Just curious
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