Rolling opamps: DIY DIP-14 to two DIP-8 socket converter for quad opamp to dual opamp - diyAudio
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Old 16th January 2014, 05:23 AM   #1
ygg-it is offline ygg-it  Italy
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Thumbs up Rolling opamps: DIY DIP-14 to two DIP-8 socket converter for quad opamp to dual opamp

It is so hard to find in the market, that I decided to build myself.

Very useful for your listening tests and MODS.

This is a DIP-14 to two DIP-8 socket adapter to convert any quad opamp to two different dual opamps.

It contains also a 100nF rail-to-rail ceramic capacitor.

I'm permanently using in the pre-amplifier section of a Musical Fidelity A120 amplifier, where I temporary replaced JFET quad op-amp TL084 with two different superb bipolar chips (chosen after rolling several dual opamps, but still under listening test): Analog Device AD827 as unity gain buffer and Linear Technology LT1361 for volume gain.

To use this you need to unsolder your quad op-amp, that could be a tricky procedure.
Enjoy!
Attached Images
File Type: jpg DIP14_socket_converter_1.jpg (48.8 KB, 76 views)
File Type: jpg DIP14_socket_converter_2.jpg (35.6 KB, 73 views)
File Type: jpg DIP14_socket_converter_3.jpg (23.9 KB, 75 views)
File Type: jpg DIP14_socket_converter_4.jpg (16.9 KB, 72 views)
File Type: jpg DIP14_socket_converter_5.jpg (28.1 KB, 75 views)
File Type: jpg DIP14_socket_converter_6.jpg (27.8 KB, 19 views)
File Type: jpg DIP14_socket_converter_7.jpg (20.5 KB, 14 views)
File Type: jpg DIP14_socket_converter_8.jpg (20.9 KB, 13 views)
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Old 17th January 2014, 05:25 AM   #2
ygg-it is offline ygg-it  Italy
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Join Date: Feb 2008
Default Another DIP8 combination

This is another outstanding bipolar configuration: Linear Technology LT1355 as unity gain buffer and Analog Device AD826 for volume gain.

Sound is slight less accurate and clean, but more emotional and warm-toned (thanks also to the well-known heavenly midrange of the AD826).

I stop here since the DIP8 combinations are nearly infinite..
Attached Images
File Type: jpg DIP14_socket_converter_1.jpg (38.7 KB, 14 views)
File Type: jpg DIP14_socket_converter_2.jpg (58.1 KB, 15 views)
File Type: jpg DIP14_socket_converter_3.jpg (23.3 KB, 17 views)
File Type: jpg DIP14_socket_converter_5.jpg (24.3 KB, 13 views)
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Old 17th January 2014, 12:27 PM   #3
AndrewT is offline AndrewT  Scotland
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Join Date: Jul 2004
Location: Scottish Borders
Nice.

Would even allow one of the pair to be a discrete opamp, or a discrete Buffer.
And allow for a soic to dip8 converter
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