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DIY tube preamp kit
DIY tube preamp kit
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Old 26th September 2021, 05:34 PM   #1
Thepinguin is offline Thepinguin
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Join Date: Aug 2020
Default DIY tube preamp kit

Hi all

Could someone point me to a qualitative tube preamp kit at a good price?

I would be using it in front a hypex amps
I just need one IN to connect a dac

In finish products, i have only seen some expensive tube preamps

Or i coud go route of chinese preamps such as fx audio 06 or douk audio P1, what are worth are these?

Thanks
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Old 26th September 2021, 05:57 PM   #2
Eli Duttman is offline Eli Duttman  United States
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Location: Monroe Township, NJ
"Standard" digital playback devices produce a 2 VRMS max. signal. What voltage is needed to drive the power amplification stuff to full O/P? If, as is often the case, the drive needed is less than 2 VRMS, no line stage gain, whatsoever, is in order.

Getting the gain structure squared away, before recommendations are made, is in order.
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Old 26th September 2021, 05:59 PM   #3
rayma is offline rayma  United States
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What voltage gain does your amplifier have? Electrically, you may only need 0dB gain,
and if so either a unity gain buffer, or just a 10k volume control would be fine.
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Old 27th September 2021, 03:48 PM   #4
nikon f is offline nikon f  United States
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Bottlehead Moreplay 6V6 preamp kit. Fun to build, almost moron proof assembly instructions and best of all sounds fantastic!
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Old 21st October 2021, 10:48 AM   #5
keps is offline keps  Philippines
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Quote:
Originally Posted by nikon f View Post
Bottlehead Moreplay 6V6 preamp kit. Fun to build, almost moron proof assembly instructions and best of all sounds fantastic!
I second this.
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Old 21st October 2021, 11:04 AM   #6
Thepinguin is offline Thepinguin
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Join Date: Aug 2020
Thanks for option,

I found also Elekit tu8500 at similar price


I tried the douk audio P1 and fx audio

Douk audio P1 is crap to listen to, it sounds a little unphase plus some hiss sound is introduce

Fx audio is kind of a surprise, essentially for the price
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Old 21st October 2021, 02:13 PM   #7
waltube is offline waltube  Italy
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Location: roma
Here a link ok a kit developped by me
Kit Preamplificatore Linea Junior Audio Review nr.407 - 412

published on Audioreview in Italy.

Walter
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Old 21st October 2021, 06:59 PM   #8
Thepinguin is offline Thepinguin
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Your kit looks really well design, i put it on list


If i understand correctly, there's still to add an enclosure, valves, scews, cables, rca connectors , and what else?
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Old 21st October 2021, 07:01 PM   #9
waltube is offline waltube  Italy
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Yes, the accessories must be included.
The Audioelettronica ( my friend, it is helping me on kits) can supply everything.
Also the tubes selected.

Walter
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Old 21st October 2021, 07:10 PM   #10
Thepinguin is offline Thepinguin
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Ok thanks, need to check all that and sum up
Isn't there second hand for sale on shelf?
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