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Chip Amps Amplifiers based on integrated circuits

ILP Amplifier Modules
ILP Amplifier Modules
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Old 13th February 2017, 02:37 AM   #11
jackinnj is offline jackinnj  United States
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ILP Amplifier Modules
I think that the ILP module I have predates Widlar's LM10 high power operational amplifier.
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Old 13th February 2017, 03:24 AM   #12
anatech is offline anatech  Canada
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ILP Amplifier Modules
Hi djmaratt,
Keep in mind that the ILP modules are extremely fussy about signals and grounding. If your LM1036 preamp has any issues in that area, expect the ILPs to complain and generally be unhappy. Your less complicated hookup from the USB sound card would have less chance for those types of problems. Your existing "preamp" should work perfectly once you have the signal and grounding issues resolved. Only you can do that because you have your stuff in front of you.

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Old 17th February 2017, 06:32 AM   #13
cvpho1 is offline cvpho1
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And here you have my amp using ILP SMOS 128
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Old 26th February 2017, 10:24 PM   #14
djmaratt is offline djmaratt  United States
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The LM1036N based Tone control module works well with the ILP MOS 248 Modules. I was able to find one with the potentiometers not mounted directly on the tone control board.
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Old 25th March 2017, 08:23 PM   #15
cvpho1 is offline cvpho1
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Recently I've took some inside pics...
I'm using it in a small office for background jazz and the sound is surprisingly good for a 20 years old design amp.
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Old 26th March 2017, 06:49 AM   #16
djmaratt is offline djmaratt  United States
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Nice Thanks for sharing the pictures. These modules last long if treated well. Sad they are no longer available. National Semiconductors used to have Linear power Amps chips ~120W. After Texas Instruments bought them, the linear Power Amp modules were eliminated. Now only class D amplifier chips are available. They are so small, it is hard to work with them.
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Old 13th April 2017, 11:32 PM   #17
Trader is offline Trader  Jamaica
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I've been using ILP Amplifiers since 1974. They are great Audio Amps and were the first Hybrid fully encapsulated Amp I am aware of. Sound is great too, and that large heatsink works well without a fan.
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Old 13th April 2017, 11:40 PM   #18
Trader is offline Trader  Jamaica
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ILP were one of the first companies to manufacture Torodial Transformers. Was a welcome change to the normal large core heavy transformers.
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Old 14th April 2017, 07:38 AM   #19
Trader is offline Trader  Jamaica
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Default HY66

Didn't you find the HY66 Pre-Amp to be a great quality pre-amp? I would just add a bluetooth input if so desired. The thing you'll notice about ILP is their attention to THD and IHD, and this goes back to the 1980s when only the best Mosfet Amp would achieve those low level THD. Also their broad Frequency Response. Using the HY66 with their line of power amp ensure those specs.
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Old 10th July 2017, 11:34 AM   #20
Liquiphonics is offline Liquiphonics
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Hi everyone,
I made an integrated amp using a pair of ILP MOS248s about 35 years ago. I used it as my main system for many years until it finally started making loud popping noises where the power supply electrolytics started to go off. I'm now going to build a new, more compact amp using them - I don't need 120W pc. By the way, they can take less than +/-55V, Im going to be using +/-25V transformers on the new amp.

The RS Application Note says that fuses should be put in the power leads for protection and a resistor to earth for stability. Being a little bit of a purist, I never used either and did not have any problems but it is always risky not following that kind of advice. What I did and always make sure of, as in my opinion it is of the utmost importance, was to use good earthing techniques; star earthing, signal earth separate to any other, big copper connection between the power supply caps and then Td off from there etc.

They always sounded really good to me; clear treble, good deep base. Also robust, I used them to drive a pair of Naim SBLs. I would recommend them in a HiFi system.

It looks like ILP are trying to get going again. I found this: ILP Electronics - New Site is Coming Soon!

Here is the ILP datasheet for the MOS248 module and the RS Components datasheet for the HY60 and the 248. I think the RS one is better than ILPs own ds.
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File Type: pdf ILP MOS248 Datasheet.pdf (176.5 KB, 18 views)
File Type: pdf RS_Comps_Hybrid_Amps_Appl_Notes.pdf (518.8 KB, 21 views)
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