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Good pre-amp kit/PCB |
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CageyH
Senior Member Joined: 30 Apr 2012 Location: Toulouse, Franc Status: Offline Points: 1678 |
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Posted: 08 Feb 2022 at 10:13am |
Continuing on my journey to have a DIY system (as much as practically possible) I am looking at building a pre amp.
I am just wondering if anybody has been down a similar path, and have any recommendations? I want something I can fit a high quality stepped attenuator. Remote control would be nice, but not essential. So a PCB that I can build into a case would be ideal.
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Kevin
European loan coordinator, based near Toulouse, France. |
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Graham Slee
Admin Group Retired Joined: 11 Jan 2008 Location: South Yorkshire Status: Offline Points: 16298 |
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I did mention I was working on such. I still am.
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That none should be able to buy or sell without a smartphone and the knowledge in how to use apps
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CageyH
Senior Member Joined: 30 Apr 2012 Location: Toulouse, Franc Status: Offline Points: 1678 |
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I had forgotten.
Thanks for the reminder. |
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Kevin
European loan coordinator, based near Toulouse, France. |
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JohnG
New Member Joined: 17 Jan 2022 Location: Herts Status: Offline Points: 10 |
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you might like to consider how a pre-amp should be controlled?
My rationale:
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Graham Slee
Admin Group Retired Joined: 11 Jan 2008 Location: South Yorkshire Status: Offline Points: 16298 |
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In the past I've worked with Holtek remote control chips as an alternative to regular remote controls. They are normally associated with garage door openers, but the RF side is easily replaced by IR transmitter and receivers (so as not to interfere with garage doors!) I also have a liking for the old Armstrong 600 series input selector which was a precursor to the chip input selectors found in many of today's amps. It may be possible to link the two ideas and do away with dodgy relays and wave change or rotary switches, and make it expandable for other forms of control. I'll have to dig out my design work from a few years ago and think it over.
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That none should be able to buy or sell without a smartphone and the knowledge in how to use apps
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CageyH
Senior Member Joined: 30 Apr 2012 Location: Toulouse, Franc Status: Offline Points: 1678 |
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I want to leave "Pi"s out of it. I want a relatively simple device. Source selection, I am happy with manual control as if I am listening to digital music, the source is selected on the DAC. I don't want to be messing around with software etc. in a pre-amp. If I am listening to vinyl, then I don't need a remote to change source, as I can do that when I lift the tone arm. I would like a SS preamp, as I already have a valve/hybrid device, which is probably the bottleneck in my system now. As for the sound signature, I don't really want one. I want to hear the recording as it was meant to be. Three inputs minimum would be good, but a variable and fixed level output are required. One for my amp, the other for the Solo UL.
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Kevin
European loan coordinator, based near Toulouse, France. |
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