Author Topic: Phono preamp  (Read 368 times)

AntKnee

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Phono preamp
« on: April 20, 2017, 07:13:36 PM »
I need a preamp for my turntable and was considering building a vero layout because... why not? Do any of you have experience with prhono preamps? I was wondering if you had any thoughts or advice on whether it is worthwhile to build one vs just buying a decent one. Like pedals, they seem overpriced for what they are.
I build, and once in a while I might sell, pedals as "Vertigo Effects".

electrosonic

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Re: Phono preamp
« Reply #1 on: April 20, 2017, 07:35:28 PM »
I made the Elliott sound version a few years ago. Works well.

http://sound.whsites.net/project06.htm

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davent

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Re: Phono preamp
« Reply #2 on: April 20, 2017, 09:28:57 PM »
I've made a couple different ones. The vero friendly one is the Very Simple Phono Stage. Few parts, nothing exotic, can run on batteries and i thought sounded very good.

http://phonoclone.com/diy-pho5.html





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pickdropper

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Re: Phono preamp
« Reply #3 on: April 21, 2017, 05:24:11 AM »
What kind of cartridge do you use?  If it's a standard MM, there are a lot more options.

If you have a Moving Coil, especially a low output one, you may need step-up transformers.  For example, my cart only has 250uV output so I need a LOT of gain on tap.
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AntKnee

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Re: Phono preamp
« Reply #4 on: April 21, 2017, 10:00:39 AM »
What kind of cartridge do you use?  If it's a standard MM, there are a lot more options.

If you have a Moving Coil, especially a low output one, you may need step-up transformers.  For example, my cart only has 250uV output so I need a LOT of gain on tap.

Honestly, I don't know. I scored an MCS direct drive turntable and I'm just setting it up for use. My receiver doesn't have a phono input, so here I am. I think it is the standard MM. I've seen mentions of this in my research up to now, but I assumed it was MM.
I build, and once in a while I might sell, pedals as "Vertigo Effects".

pickdropper

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Re: Phono preamp
« Reply #5 on: April 21, 2017, 09:50:00 PM »
What kind of cartridge do you use?  If it's a standard MM, there are a lot more options.

If you have a Moving Coil, especially a low output one, you may need step-up transformers.  For example, my cart only has 250uV output so I need a LOT of gain on tap.

Honestly, I don't know. I scored an MCS direct drive turntable and I'm just setting it up for use. My receiver doesn't have a phono input, so here I am. I think it is the standard MM. I've seen mentions of this in my research up to now, but I assumed it was MM.

In all likelihood it is MM, but it's worth double checking before going to the trouble of building a phono stage.
Etymotic Research, Function f(x)

stecykmi

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Re: Phono preamp
« Reply #6 on: April 22, 2017, 01:37:30 PM »
here's my project from a while back. i still use this device. the jfets for this project are a little hard to get unfortunately.