[sdiy] Uses for Chinese Tube Preamps?

[Rutger Vlek]

It looks like they are supplied with 12V. Would that be internally pumped
up to the typical voltages required by tubes? Or is it a starved plate
design (still requiring more than 12V). Or are they tubes only there for
decoration? :).

Rutger

Op ma 14 okt 2024 om 08:07 schreef Spiros Makris via Synth-diy <
synth-diy at synth-diy.org>:

> This is an example of what I'm referring to
> Preamp on Aliexpress
> <https://vi.aliexpress.com/item/1005006868194344.html?spm=a2g0o.detail.pcDetailTopMoreOtherSeller.9.1bd0YKRYYKRYI4&gps-id=pcDetailTopMoreOtherSeller&scm=1007.40050.354490.0&scm_id=1007.40050.354490.0&scm-url=1007.40050.354490.0&pvid=ef3bc583-760d-4419-a176-11392f6ae148&_t=gps-id:pcDetailTopMoreOtherSeller,scm-url:1007.40050.354490.0,pvid:ef3bc583-760d-4419-a176-11392f6ae148,tpp_buckets:668%232846%238107%231934&pdp_npi=4%40dis%21EUR%2119.12%2119.12%21%21%21144.55%21144.55%21%40210386d117288852188184318e5035%2112000038567904559%21rec%21GR%21861493032%21XZ&utparam-url=scene%3ApcDetailTopMoreOtherSeller%7Cquery_from%3A>
> There's 2-3 variations of that, in DIY kit or prebuilt versions.
> I don't have any specific sound in mind, I'm just curious what it could do
> if you push it over the edge 😅
>
> On Sun, 13 Oct 2024 at 01:56, Jay Schwichtenberg via Synth-diy <
> synth-diy at synth-diy.org> wrote:
>
>> I'm assuming that these are 'audiophile' preamps.
>>
>> One thing to keep in mind is that audio preamps are designed to sound
>> good and guitar preamps are not. Most of the distortion in a guitar
>> preamp is because of their lousy design and poor quality parts. So if
>> you are looking for guitar type sounds then you're going to have to
>> modify these preamps.
>>
>> Jay S.
>>
>> On 10/12/2024 10:22 AM, Spiros Makris via Synth-diy wrote:
>> > Hello List,
>> > I recently saw a short demo video of some pretty cheap tube preamps
>> > from aliexpress. I have no use for a preamp right now, but given the
>> > price (16 euros delivered!) I guess it would be fun to overdrive it or
>> > do some mods to it. I am expecting a spring rever driver PCB, and I
>> > was entertaining the idea of combining it with a tube drive, to apply
>> > on synthesizers.
>> >
>> > Has anyone tried it? Maybe even have a schematic to share?
>> >
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