Sure-Electronics.com class d amps

kellyinvestor · 2nd November 2007, 12:35 AM

Does anyone have any experience/opinion on this amp? spec sheet

Neil Davis · 2nd November 2007, 01:15 AM

This was discussed briefly under the thread "Class D on ebay". Nobody in that thread had bought one yet--just guesses as to what chip is used. The single supply suggests a TI chip, but it's got an analog input, which means it probably isn't TI.

I put one on order Oct 26. When it comes in I'll dissect it and post results.

BWRX · 2nd November 2007, 02:48 AM

According to the drawing there is only one large device under the heat sink. I would guess that it might be a Sanyo STK series chip.

buzz1939 · 7th November 2007, 01:58 AM

I'm not going to try to take the heatsink off, but here are some photos. It'll be a while before I can really give it a listen, but it works and has me curious.

The main chip is one large device.

Photos of Sure 4 Channel Amp

Ouroboros · 7th November 2007, 10:52 AM

Almost certainly a Sanyo STK428-xxx 'Ice-Power' module. I've tested their two-channel module (STK430-428) and it's a nice performer, though the frequency response alters noticeably with load impedance.

buzz1939 · 7th November 2007, 11:40 AM

FWIW - pdf with product info on STK428-600 2 channel modules - just for the general description

Ouroboros · 7th November 2007, 11:56 AM

Though this one looks like a single-supply (+24V) version. (My Sanyo data for this range is a couple of years old and doesn't show a full-bridge, single-supply. single-rail module at that time.)

Ouroboros · 7th November 2007, 12:00 PM

Sorry, I meant that my old data doesn't show a full-bridge, single supply, 4-channel unit!

audio1st · 7th November 2007, 04:08 PM

Is this it, or half of it anyway ?
http://www.comprel.it/scheda_prodott...t/news1476.pdf
PS I ordered one and a 24V switch mode power supply and they arrived today. Will have a listen at the weekend..

Neil Davis · 7th November 2007, 09:17 PM

Quote:

Originally posted by buzz1939
I'm not going to try to take the heatsink off, but here are some photos.

Hmmm...I would have taken off that heatsink within 5 minutes of opening the package.

Inquiring minds need to know!

Mine was supposedly shipped on Nov 1 but it hasn't shown up yet.

2nd November 2007, 12:35 AM	#1
kellyinvestor diyAudio Member Join Date: Dec 2006	Sure-Electronics.com class d amps Does anyone have any experience/opinion on this amp? spec sheet

2nd November 2007, 02:48 AM	#3
BWRX diyAudio Moderator Emeritus Join Date: Jan 2005 Location: Pennsylvania	According to the drawing there is only one large device under the heat sink. I would guess that it might be a Sanyo STK series chip. __________________ Brian

7th November 2007, 01:58 AM	#4
buzz1939 diyAudio Member Join Date: May 2007	Photos I'm not going to try to take the heatsink off, but here are some photos. It'll be a while before I can really give it a listen, but it works and has me curious. The main chip is one large device. Photos of Sure 4 Channel Amp

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2nd November 2007, 01:15 AM	#2
Neil Davis diyAudio Member Join Date: Dec 2004 Location: Reston, Virginia	This was discussed briefly under the thread "Class D on ebay". Nobody in that thread had bought one yet--just guesses as to what chip is used. The single supply suggests a TI chip, but it's got an analog input, which means it probably isn't TI. I put one on order Oct 26. When it comes in I'll dissect it and post results.

7th November 2007, 10:52 AM	#5
Ouroboros diyAudio Member Join Date: Dec 2003 Location: Nottingham UK	Almost certainly a Sanyo STK428-xxx 'Ice-Power' module. I've tested their two-channel module (STK430-428) and it's a nice performer, though the frequency response alters noticeably with load impedance.

7th November 2007, 11:40 AM	#6
buzz1939 diyAudio Member Join Date: May 2007	FWIW - pdf with product info on STK428-600 2 channel modules - just for the general description

7th November 2007, 11:56 AM	#7
Ouroboros diyAudio Member Join Date: Dec 2003 Location: Nottingham UK	Though this one looks like a single-supply (+24V) version. (My Sanyo data for this range is a couple of years old and doesn't show a full-bridge, single-supply. single-rail module at that time.)

7th November 2007, 12:00 PM	#8
Ouroboros diyAudio Member Join Date: Dec 2003 Location: Nottingham UK	Sorry, I meant that my old data doesn't show a full-bridge, single supply, 4-channel unit!

7th November 2007, 04:08 PM	#9
audio1st diyAudio Member Join Date: May 2005 Location: Foxton, CAMBS..	Is this it, or half of it anyway ? http://www.comprel.it/scheda_prodott...t/news1476.pdf PS I ordered one and a 24V switch mode power supply and they arrived today. Will have a listen at the weekend..

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