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Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

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Old 9th November 2019, 02:45 AM   #101
AnthonyA is offline AnthonyA
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Yes.. Ultra probably much better..less ringing..
If going for smooth musical Salas is good. Result will also vary some with different parts
If looking for more neatness, bass, control and attack. Try normal ic.. And the quieter the ic the more thin, clean the sound.

This is a couple free preamp.. It will depend alot on partnering equipment and supply.. Ie if your parts, dac or supply is bad it just reads it. I found some harshness in my dac sound because of this.. A quick modify it's good to go. Just use a good 60/40 type solder. Hi fi silver solder is a pain in the..
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Old 9th November 2019, 02:46 AM   #102
AnthonyA is offline AnthonyA
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Remember to snubber the transformer.. It's always better
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Old 9th November 2019, 07:48 PM   #103
Salas is offline Salas  Greece
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USSPA Build thread
If floating a PSU two L-Adapter can also be used like two batteries stacked with a midpoint. Just to let you know in case somebody has those high power positive only boards. Snubbers must be put externally across the secondary if desired.

Ultrabib board has snubber parts positions on each AC input area. Its three breakable units per board. Two plus and a minus section.

The better leaded solder wire in my view is Sn62 eutectic alloy. Among the best workable classic solders while still including 2% silver. Made by few established manufacturers. Loctite (Multicore) is one of those.
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Old 14th November 2019, 04:49 PM   #104
AnthonyA is offline AnthonyA
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I'm happy now with the sound after a little adjustments.

For those who like to hear it.. You don't have to come to my home. I had post it in you tube just to get an idea
Previous is also there under my videos. If you care to compare
Hope you like it

YouTube
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Old 15th November 2019, 05:10 AM   #105
Harry3 is offline Harry3  Australia
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How disappointing!
We all wanted to come to your place

Sounds good.
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Old 15th November 2019, 10:45 AM   #106
meanie is offline meanie  Singapore
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Make some final adjustments before they go into a proper chassis.

Click the image to open in full size.
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Marantz 7 clone - BA3FE - Yarra/Melbourne Preamp - USSPA - Korg Nutube - BabyHuey EL34s - 2ACAs - F6 - M2XSLB - 2Whammy -
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Old 15th November 2019, 07:07 PM   #107
AnthonyA is offline AnthonyA
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Danks Harry. Glad u like it.

Meanie.. Wow u got a great lab
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Old 21st November 2019, 11:46 AM   #108
AnthonyA is offline AnthonyA
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Heppy camper yet Ivan?
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Old 21st November 2019, 10:09 PM   #109
meanie is offline meanie  Singapore
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They both sang previously inside Yarra.
Now i need more time to put them into proper chassis with their own powersupply.
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Old 22nd November 2019, 03:41 AM   #110
AnthonyA is offline AnthonyA
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Ok. Waiting for your reviews.
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